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1. 
How may excessive bleeding results in death? (Answered)
How may excessive bleeding results in death? .
Posted On:Sat 20, March 2021 13:59:57 pm
How may excessive bleeding results in death? (Answered)How may excessive bleeding results in death? .
Posted On:Sat 20, March 2021 13:59:57 pm
2. Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere. (Answered)
Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere. .
Posted On:Sat 20, March 2021 13:58:11 pm
Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere. (Answered)Describe the path taken by carbon dioxide released from the tissue of an insect to the atmosphere. .
Posted On:Sat 20, March 2021 13:58:11 pm
3. State two ways by which Acquired Immuno Deficiency Syndrome (AIDS) virus is transmitted. (Answered)
State two ways by which Acquired Immuno Deficiency Syndrome (AIDS) virus is transmitted. .
Posted On:Sat 20, March 2021 13:49:37 pm
State two ways by which Acquired Immuno Deficiency Syndrome (AIDS) virus is transmitted. (Answered)State two ways by which Acquired Immuno Deficiency Syndrome (AIDS) virus is transmitted. .
Posted On:Sat 20, March 2021 13:49:37 pm
4. Chlorine and iodine are elements in the same group in the periodic table. Chlorine gas is a yellow while aqueous, iodine , #I_2(aq)# is brown.
(a) What observation would be made if chlorine gas is bubbled through aqueous sodium iodide?
Explain using an ionic equation.
(b) Under certain conditions chlorine and iodine react to give iodine trichloride, #ICl_3(s)#. What type of bonding would you (Answered)
Chlorine and iodine are elements in the same group in the periodic table. Chlorine gas is a yellow while aqueous, iodine , #I_2(aq)# is brown. (a) What observation would be made if chlorine gas is bubbled through aqueous sodium iodide? Explain using an ionic equation. (b) Under certain conditions chlorine and iodine react to give iodine trichloride, #ICl_3(s)#. What type of bonding would you .
Posted On:Sat 20, March 2021 11:19:02 am
Chlorine and iodine are elements in the same group in the periodic table. Chlorine gas is a yellow while aqueous, iodine , #I_2(aq)# is brown.
(a) What observation would be made if chlorine gas is bubbled through aqueous sodium iodide?
Explain using an ionic equation.
(b) Under certain conditions chlorine and iodine react to give iodine trichloride, #ICl_3(s)#. What type of bonding would you (Answered)Chlorine and iodine are elements in the same group in the periodic table. Chlorine gas is a yellow while aqueous, iodine , #I_2(aq)# is brown. (a) What observation would be made if chlorine gas is bubbled through aqueous sodium iodide? Explain using an ionic equation. (b) Under certain conditions chlorine and iodine react to give iodine trichloride, #ICl_3(s)#. What type of bonding would you .
Posted On:Sat 20, March 2021 11:19:02 am
5. (a) In an experiment hydrogen chloride gas was prepared and reacted with aluminium
turnings to form a solid Q and gas R as shown below.
(i) Name: Liquid P, Gas R, Solid Q
(ii) Name another substance that could serve the same purpose as the concentrated sulphuric (VI) acid.
(iii) Explain the following observation. When a blue litmus paper was dipped into the water
in the beaker at the end of the (Answered)
(a) In an experiment hydrogen chloride gas was prepared and reacted with aluminium turnings to form a solid Q and gas R as shown below. (i) Name: Liquid P, Gas R, Solid Q (ii) Name another substance that could serve the same purpose as the concentrated sulphuric (VI) acid. (iii) Explain the following observation. When a blue litmus paper was dipped into the water in the beaker at the end of the .
Posted On:Sat 20, March 2021 11:01:58 am
(a) In an experiment hydrogen chloride gas was prepared and reacted with aluminium
turnings to form a solid Q and gas R as shown below.
(i) Name: Liquid P, Gas R, Solid Q
(ii) Name another substance that could serve the same purpose as the concentrated sulphuric (VI) acid.
(iii) Explain the following observation. When a blue litmus paper was dipped into the water
in the beaker at the end of the (Answered)(a) In an experiment hydrogen chloride gas was prepared and reacted with aluminium turnings to form a solid Q and gas R as shown below. (i) Name: Liquid P, Gas R, Solid Q (ii) Name another substance that could serve the same purpose as the concentrated sulphuric (VI) acid. (iii) Explain the following observation. When a blue litmus paper was dipped into the water in the beaker at the end of the .
Posted On:Sat 20, March 2021 11:01:58 am
6. Figure 8 shows the graph of velocity against time for a small steel ball falling in a viscous liquid.
(i) Describe the motion of the steel ball as represented by part OA.
(ii) Explain why the velocity between A and B is constant. (Answered)
Figure 8 shows the graph of velocity against time for a small steel ball falling in a viscous liquid. (i) Describe the motion of the steel ball as represented by part OA. (ii) Explain why the velocity between A and B is constant. .
Posted On:Thu 18, March 2021 06:51:39 am
Figure 8 shows the graph of velocity against time for a small steel ball falling in a viscous liquid.
(i) Describe the motion of the steel ball as represented by part OA.
(ii) Explain why the velocity between A and B is constant. (Answered)Figure 8 shows the graph of velocity against time for a small steel ball falling in a viscous liquid. (i) Describe the motion of the steel ball as represented by part OA. (ii) Explain why the velocity between A and B is constant. .
Posted On:Thu 18, March 2021 06:51:39 am
7. Two boxes E and F of masses 2.0kg and 4.0kg respectively are dragged along a frictionless surface using identical forces. State with a reason which box moves with a higher velocity. (Answered)
Two boxes E and F of masses 2.0kg and 4.0kg respectively are dragged along a frictionless surface using identical forces. State with a reason which box moves with a higher velocity. .
Posted On:Thu 18, March 2021 06:47:32 am
Two boxes E and F of masses 2.0kg and 4.0kg respectively are dragged along a frictionless surface using identical forces. State with a reason which box moves with a higher velocity. (Answered)Two boxes E and F of masses 2.0kg and 4.0kg respectively are dragged along a frictionless surface using identical forces. State with a reason which box moves with a higher velocity. .
Posted On:Thu 18, March 2021 06:47:32 am
8. Using the definition of impulsive force, show that F=ma. (Answered)
Using the definition of impulsive force, show that F=ma. .
Posted On:Thu 18, March 2021 06:44:17 am
Using the definition of impulsive force, show that F=ma. (Answered)Using the definition of impulsive force, show that F=ma. .
Posted On:Thu 18, March 2021 06:44:17 am
9. A horizontal force of 12N is applied on a wooden block of mass 2kg placed on a
horizontal surface. It causes the block to accelerate at 5 #ms^-2#. Determine the frictional force between the block and the surface. (Answered)
A horizontal force of 12N is applied on a wooden block of mass 2kg placed on a horizontal surface. It causes the block to accelerate at 5 #ms^-2#. Determine the frictional force between the block and the surface. .
Posted On:Thu 18, March 2021 06:38:37 am
A horizontal force of 12N is applied on a wooden block of mass 2kg placed on a
horizontal surface. It causes the block to accelerate at 5 #ms^-2#. Determine the frictional force between the block and the surface. (Answered)A horizontal force of 12N is applied on a wooden block of mass 2kg placed on a horizontal surface. It causes the block to accelerate at 5 #ms^-2#. Determine the frictional force between the block and the surface. .
Posted On:Thu 18, March 2021 06:38:37 am
10. A parachute falling through the air attains terminal velocity after a short time. State the
the reason why it attains terminal velocity (Answered)
A parachute falling through the air attains terminal velocity after a short time. State the the reason why it attains terminal velocity .
Posted On:Thu 18, March 2021 06:35:43 am
A parachute falling through the air attains terminal velocity after a short time. State the
the reason why it attains terminal velocity (Answered)A parachute falling through the air attains terminal velocity after a short time. State the the reason why it attains terminal velocity .
Posted On:Thu 18, March 2021 06:35:43 am
11. A student pulls a block of the wood along a horizontal surface by applying a constant force. State the reason why the block moves at a constant velocity. (Answered)
A student pulls a block of the wood along a horizontal surface by applying a constant force. State the reason why the block moves at a constant velocity. .
Posted On:Thu 18, March 2021 06:34:06 am
A student pulls a block of the wood along a horizontal surface by applying a constant force. State the reason why the block moves at a constant velocity. (Answered)A student pulls a block of the wood along a horizontal surface by applying a constant force. State the reason why the block moves at a constant velocity. .
Posted On:Thu 18, March 2021 06:34:06 am
12. Figure 13 shows a frictionless trolley of mass 2kg moving with uniform velocity
towards a wall. At the front of the trolley is a spring whose spring constant is 25 Nm-1. The
trolley comes to rest momentarily after compressing the spring by 3cm and the rebounds from the wall.
(i) Determine:
(I) The force exerted on the wall by the spring.
(II) The maximum acceleration of the as it rebounds from the (Answered)
Figure 13 shows a frictionless trolley of mass 2kg moving with uniform velocity towards a wall. At the front of the trolley is a spring whose spring constant is 25 Nm-1. The trolley comes to rest momentarily after compressing the spring by 3cm and the rebounds from the wall. (i) Determine: (I) The force exerted on the wall by the spring. (II) The maximum acceleration of the as it rebounds from the .
Posted On:Thu 18, March 2021 06:31:01 am
Figure 13 shows a frictionless trolley of mass 2kg moving with uniform velocity
towards a wall. At the front of the trolley is a spring whose spring constant is 25 Nm-1. The
trolley comes to rest momentarily after compressing the spring by 3cm and the rebounds from the wall.
(i) Determine:
(I) The force exerted on the wall by the spring.
(II) The maximum acceleration of the as it rebounds from the (Answered)Figure 13 shows a frictionless trolley of mass 2kg moving with uniform velocity towards a wall. At the front of the trolley is a spring whose spring constant is 25 Nm-1. The trolley comes to rest momentarily after compressing the spring by 3cm and the rebounds from the wall. (i) Determine: (I) The force exerted on the wall by the spring. (II) The maximum acceleration of the as it rebounds from the .
Posted On:Thu 18, March 2021 06:31:01 am
13. Figure 12 shows a lorry towing a trailer using a rope.
The lorry exerts a force N on the trailer and the trailer exerts an equal but opposite force M on the lorry. The frictional force between the trailer and the road is F.
Explain how the forces N, M and F enable the trailer to move. (Answered)
Figure 12 shows a lorry towing a trailer using a rope. The lorry exerts a force N on the trailer and the trailer exerts an equal but opposite force M on the lorry. The frictional force between the trailer and the road is F. Explain how the forces N, M and F enable the trailer to move. .
Posted On:Thu 18, March 2021 06:21:36 am
Figure 12 shows a lorry towing a trailer using a rope.
The lorry exerts a force N on the trailer and the trailer exerts an equal but opposite force M on the lorry. The frictional force between the trailer and the road is F.
Explain how the forces N, M and F enable the trailer to move. (Answered)Figure 12 shows a lorry towing a trailer using a rope. The lorry exerts a force N on the trailer and the trailer exerts an equal but opposite force M on the lorry. The frictional force between the trailer and the road is F. Explain how the forces N, M and F enable the trailer to move. .
Posted On:Thu 18, March 2021 06:21:36 am
14. Figure 5 is a graph of net force on a body against its velocity as it falls through a liquid.
Determine the terminal velocity of the body (Answered)
Figure 5 is a graph of net force on a body against its velocity as it falls through a liquid. Determine the terminal velocity of the body .
Posted On:Thu 18, March 2021 06:17:19 am
Figure 5 is a graph of net force on a body against its velocity as it falls through a liquid.
Determine the terminal velocity of the body (Answered)Figure 5 is a graph of net force on a body against its velocity as it falls through a liquid. Determine the terminal velocity of the body .
Posted On:Thu 18, March 2021 06:17:19 am
15. A cart of mass 30kg is pushed along a horizontal path by a horizontal force of 8N and moves with a constant velocity. The force is then increased to 14N.
Determine:
(a) The resistance to the motion of the cart
(b) The acceleration of th cart. (Answered)
A cart of mass 30kg is pushed along a horizontal path by a horizontal force of 8N and moves with a constant velocity. The force is then increased to 14N. Determine: (a) The resistance to the motion of the cart (b) The acceleration of th cart. .
Posted On:Thu 18, March 2021 06:13:57 am
A cart of mass 30kg is pushed along a horizontal path by a horizontal force of 8N and moves with a constant velocity. The force is then increased to 14N.
Determine:
(a) The resistance to the motion of the cart
(b) The acceleration of th cart. (Answered)A cart of mass 30kg is pushed along a horizontal path by a horizontal force of 8N and moves with a constant velocity. The force is then increased to 14N. Determine: (a) The resistance to the motion of the cart (b) The acceleration of th cart. .
Posted On:Thu 18, March 2021 06:13:57 am
16. A car of mass 800kg starts from rest and accelerates at 1.2 #ms^-2#.
Determine its momentum after it has moved 400m from the starting point (Answered)
A car of mass 800kg starts from rest and accelerates at 1.2 #ms^-2#. Determine its momentum after it has moved 400m from the starting point .
Posted On:Thu 18, March 2021 06:09:32 am
A car of mass 800kg starts from rest and accelerates at 1.2 #ms^-2#.
Determine its momentum after it has moved 400m from the starting point (Answered)A car of mass 800kg starts from rest and accelerates at 1.2 #ms^-2#. Determine its momentum after it has moved 400m from the starting point .
Posted On:Thu 18, March 2021 06:09:32 am
17. State newton’s first law of motion. (Answered)
State newton’s first law of motion. .
Posted On:Thu 18, March 2021 06:04:14 am
State newton’s first law of motion. (Answered)State newton’s first law of motion. .
Posted On:Thu 18, March 2021 06:04:14 am
18. A footballer kicks a ball of mass 0.6 kg initially at rest using a force of 720N. if the
foot was in contact with the ball for 0.1 seconds, what was the takeoff speed of the ball? (Answered)
A footballer kicks a ball of mass 0.6 kg initially at rest using a force of 720N. if the foot was in contact with the ball for 0.1 seconds, what was the takeoff speed of the ball? .
Posted On:Thu 18, March 2021 06:00:43 am
A footballer kicks a ball of mass 0.6 kg initially at rest using a force of 720N. if the
foot was in contact with the ball for 0.1 seconds, what was the takeoff speed of the ball? (Answered)A footballer kicks a ball of mass 0.6 kg initially at rest using a force of 720N. if the foot was in contact with the ball for 0.1 seconds, what was the takeoff speed of the ball? .
Posted On:Thu 18, March 2021 06:00:43 am
19. A trolley is moving at a uniform speed along a track. A piece of plasticine is dropped on the trolley and sticks on it. Explain why the trolley slows down. (Answered)
A trolley is moving at a uniform speed along a track. A piece of plasticine is dropped on the trolley and sticks on it. Explain why the trolley slows down. .
Posted On:Thu 18, March 2021 05:57:16 am
A trolley is moving at a uniform speed along a track. A piece of plasticine is dropped on the trolley and sticks on it. Explain why the trolley slows down. (Answered)A trolley is moving at a uniform speed along a track. A piece of plasticine is dropped on the trolley and sticks on it. Explain why the trolley slows down. .
Posted On:Thu 18, March 2021 05:57:16 am
20. A resultant force F acts on a body of mass m causing an acceleration #a1# on the body. When the same force acts on a body of mass 2m, it causes an acceleration #a_2#. Express #a_2# in terms of #a_1# (Answered)
A resultant force F acts on a body of mass m causing an acceleration #a1# on the body. When the same force acts on a body of mass 2m, it causes an acceleration #a_2#. Express #a_2# in terms of #a_1# .
Posted On:Thu 18, March 2021 05:55:50 am
A resultant force F acts on a body of mass m causing an acceleration #a1# on the body. When the same force acts on a body of mass 2m, it causes an acceleration #a_2#. Express #a_2# in terms of #a_1# (Answered)A resultant force F acts on a body of mass m causing an acceleration #a1# on the body. When the same force acts on a body of mass 2m, it causes an acceleration #a_2#. Express #a_2# in terms of #a_1# .
Posted On:Thu 18, March 2021 05:55:50 am
21. A body resting on a horizontal surface is given an initial velocity V so that it slides on the
surface for some distance before coming to a stop. Table 1 shows the distance d moved by the body of various values of V.
Given that #V^2# = 20μd where μ is a constant for the surface, plot an appropriate graph and use it to determine μ. (Answered)
A body resting on a horizontal surface is given an initial velocity V so that it slides on the surface for some distance before coming to a stop. Table 1 shows the distance d moved by the body of various values of V. Given that #V^2# = 20μd where μ is a constant for the surface, plot an appropriate graph and use it to determine μ. .
Posted On:Thu 18, March 2021 05:49:17 am
A body resting on a horizontal surface is given an initial velocity V so that it slides on the
surface for some distance before coming to a stop. Table 1 shows the distance d moved by the body of various values of V.
Given that #V^2# = 20μd where μ is a constant for the surface, plot an appropriate graph and use it to determine μ. (Answered)A body resting on a horizontal surface is given an initial velocity V so that it slides on the surface for some distance before coming to a stop. Table 1 shows the distance d moved by the body of various values of V. Given that #V^2# = 20μd where μ is a constant for the surface, plot an appropriate graph and use it to determine μ. .
Posted On:Thu 18, March 2021 05:49:17 am
22. State one of the Newton’s law of motion (Answered)
State one of the Newton’s law of motion .
Posted On:Thu 18, March 2021 05:40:20 am
State one of the Newton’s law of motion (Answered)State one of the Newton’s law of motion .
Posted On:Thu 18, March 2021 05:40:20 am
23. A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact. (Answered)
A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact. .
Posted On:Thu 18, March 2021 05:39:22 am
A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact. (Answered)A high jumper usually lands on thick soft mattress. Explain how the mattress helps in reducing the force of impact. .
Posted On:Thu 18, March 2021 05:39:22 am
24. A train of mass 200 tonnes starts from rest and accelerates uniformly at 0.5 #ms^-2#.
Determine its momentum after moving 100m (Answered)
A train of mass 200 tonnes starts from rest and accelerates uniformly at 0.5 #ms^-2#. Determine its momentum after moving 100m .
Posted On:Thu 18, March 2021 05:36:51 am
A train of mass 200 tonnes starts from rest and accelerates uniformly at 0.5 #ms^-2#.
Determine its momentum after moving 100m (Answered)A train of mass 200 tonnes starts from rest and accelerates uniformly at 0.5 #ms^-2#. Determine its momentum after moving 100m .
Posted On:Thu 18, March 2021 05:36:51 am
25. Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity – time graph of the motion of the balls.
Explain the nature of the curves and state why they are different (Answered)
Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity – time graph of the motion of the balls. Explain the nature of the curves and state why they are different .
Posted On:Thu 18, March 2021 05:29:21 am
Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity – time graph of the motion of the balls.
Explain the nature of the curves and state why they are different (Answered)Two identical spherical steel balls are released from the top of two tall jars containing liquids L1 and L2 respectively. Figure 3 shows the velocity – time graph of the motion of the balls. Explain the nature of the curves and state why they are different .
Posted On:Thu 18, March 2021 05:29:21 am
26. An industrial trolley of mass 20kg carrying a mass of 50kg is acted on by a constant force. The trolley moves along a horizontal smooth surface with an acceleration of 0.5 #ms^-2#. Determine the acceleration of the trolley after the mass falls off. (Answered)
An industrial trolley of mass 20kg carrying a mass of 50kg is acted on by a constant force. The trolley moves along a horizontal smooth surface with an acceleration of 0.5 #ms^-2#. Determine the acceleration of the trolley after the mass falls off. .
Posted On:Thu 18, March 2021 05:20:09 am
An industrial trolley of mass 20kg carrying a mass of 50kg is acted on by a constant force. The trolley moves along a horizontal smooth surface with an acceleration of 0.5 #ms^-2#. Determine the acceleration of the trolley after the mass falls off. (Answered)An industrial trolley of mass 20kg carrying a mass of 50kg is acted on by a constant force. The trolley moves along a horizontal smooth surface with an acceleration of 0.5 #ms^-2#. Determine the acceleration of the trolley after the mass falls off. .
Posted On:Thu 18, March 2021 05:20:09 am
27. A gun is fired vertically upwards from the top of an open truck moving horizontally at a uniform velocity of #50 ms^-1#. The bullet achieves a maximum height of 45m.
(i) State with reason whether or not the bullet will land on the truck.
(ii) Calculate the distance covered by the truck just before the bullet reaches the level from
which it was fired. (Use g=10 #ms^-2#). (Answered)
A gun is fired vertically upwards from the top of an open truck moving horizontally at a uniform velocity of #50 ms^-1#. The bullet achieves a maximum height of 45m. (i) State with reason whether or not the bullet will land on the truck. (ii) Calculate the distance covered by the truck just before the bullet reaches the level from which it was fired. (Use g=10 #ms^-2#). .
Posted On:Thu 18, March 2021 05:16:12 am
A gun is fired vertically upwards from the top of an open truck moving horizontally at a uniform velocity of #50 ms^-1#. The bullet achieves a maximum height of 45m.
(i) State with reason whether or not the bullet will land on the truck.
(ii) Calculate the distance covered by the truck just before the bullet reaches the level from
which it was fired. (Use g=10 #ms^-2#). (Answered)A gun is fired vertically upwards from the top of an open truck moving horizontally at a uniform velocity of #50 ms^-1#. The bullet achieves a maximum height of 45m. (i) State with reason whether or not the bullet will land on the truck. (ii) Calculate the distance covered by the truck just before the bullet reaches the level from which it was fired. (Use g=10 #ms^-2#). .
Posted On:Thu 18, March 2021 05:16:12 am
28. A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley. (Answered)
A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley. .
Posted On:Thu 18, March 2021 05:06:40 am
A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley. (Answered)A trolley is moving at constant speed in friction compensated track. Some plasticine is dropped on the trolley and sticks on it. State with a reason what is observed about the motion of the trolley. .
Posted On:Thu 18, March 2021 05:06:40 am
29. State Newton’s first law of motion. (Answered)
State Newton’s first law of motion. .
Posted On:Thu 18, March 2021 05:05:06 am
State Newton’s first law of motion. (Answered)State Newton’s first law of motion. .
Posted On:Thu 18, March 2021 05:05:06 am
30. State and explain the function of the Grid in the cathode ray tube. (Answered)
State and explain the function of the Grid in the cathode ray tube. .
Posted On:Thu 18, March 2021 05:00:43 am
State and explain the function of the Grid in the cathode ray tube. (Answered)State and explain the function of the Grid in the cathode ray tube. .
Posted On:Thu 18, March 2021 05:00:43 am
31. The current of electrons hitting the screen of a cathode ray oscilloscope is 2.0 X #10^-4#A. Determine the number of electrons that strike the screen each second. (Take charge of an electron as 1.6 X#10^-19#C). (Answered)
The current of electrons hitting the screen of a cathode ray oscilloscope is 2.0 X #10^-4#A. Determine the number of electrons that strike the screen each second. (Take charge of an electron as 1.6 X#10^-19#C). .
Posted On:Thu 18, March 2021 04:57:56 am
The current of electrons hitting the screen of a cathode ray oscilloscope is 2.0 X #10^-4#A. Determine the number of electrons that strike the screen each second. (Take charge of an electron as 1.6 X#10^-19#C). (Answered)The current of electrons hitting the screen of a cathode ray oscilloscope is 2.0 X #10^-4#A. Determine the number of electrons that strike the screen each second. (Take charge of an electron as 1.6 X#10^-19#C). .
Posted On:Thu 18, March 2021 04:57:56 am
32. Explain how electrons are produced in the Cathode ray tube. (Answered)
Explain how electrons are produced in the Cathode ray tube. .
Posted On:Thu 18, March 2021 04:52:24 am
Explain how electrons are produced in the Cathode ray tube. (Answered)Explain how electrons are produced in the Cathode ray tube. .
Posted On:Thu 18, March 2021 04:52:24 am
33. State two differences between cathode rays and electromagnetic radiations. (Answered)
State two differences between cathode rays and electromagnetic radiations. .
Posted On:Thu 18, March 2021 04:51:08 am
State two differences between cathode rays and electromagnetic radiations. (Answered)State two differences between cathode rays and electromagnetic radiations. .
Posted On:Thu 18, March 2021 04:51:08 am
34. Figure 14 (a) is a diagram of a cathode ray tube. M and N are parallel vertical plates
(a) When switch S is open, a spot is seen at the centre of the screen as shown in figure 14(b).
(i) State what happens to the sport when S is closed.
(ii) State what would happen to the spot if the potential difference across MN is increased.
(iii) State what would be seen on the screen if the battery is replace (Answered)
Figure 14 (a) is a diagram of a cathode ray tube. M and N are parallel vertical plates (a) When switch S is open, a spot is seen at the centre of the screen as shown in figure 14(b). (i) State what happens to the sport when S is closed. (ii) State what would happen to the spot if the potential difference across MN is increased. (iii) State what would be seen on the screen if the battery is replace .
Posted On:Thu 18, March 2021 04:49:22 am
Figure 14 (a) is a diagram of a cathode ray tube. M and N are parallel vertical plates
(a) When switch S is open, a spot is seen at the centre of the screen as shown in figure 14(b).
(i) State what happens to the sport when S is closed.
(ii) State what would happen to the spot if the potential difference across MN is increased.
(iii) State what would be seen on the screen if the battery is replace (Answered)Figure 14 (a) is a diagram of a cathode ray tube. M and N are parallel vertical plates (a) When switch S is open, a spot is seen at the centre of the screen as shown in figure 14(b). (i) State what happens to the sport when S is closed. (ii) State what would happen to the spot if the potential difference across MN is increased. (iii) State what would be seen on the screen if the battery is replace .
Posted On:Thu 18, March 2021 04:49:22 am
35. (a) Figure 14 shows the features of a cathode ray tube.
(i) Name the parts labeled A and B.
(ii) Explain how the electrons are produced in the tube.
(iii) State two functions of the anodes.
(iv) At what part of the cathode ray tube would the time be connected?
(v) Why is a vacuum created in the tube? (Answered)
(a) Figure 14 shows the features of a cathode ray tube. (i) Name the parts labeled A and B. (ii) Explain how the electrons are produced in the tube. (iii) State two functions of the anodes. (iv) At what part of the cathode ray tube would the time be connected? (v) Why is a vacuum created in the tube? .
Posted On:Thu 18, March 2021 04:36:33 am
(a) Figure 14 shows the features of a cathode ray tube.
(i) Name the parts labeled A and B.
(ii) Explain how the electrons are produced in the tube.
(iii) State two functions of the anodes.
(iv) At what part of the cathode ray tube would the time be connected?
(v) Why is a vacuum created in the tube? (Answered)(a) Figure 14 shows the features of a cathode ray tube. (i) Name the parts labeled A and B. (ii) Explain how the electrons are produced in the tube. (iii) State two functions of the anodes. (iv) At what part of the cathode ray tube would the time be connected? (v) Why is a vacuum created in the tube? .
Posted On:Thu 18, March 2021 04:36:33 am
36. Figure 6 shows a tube for investigating the properties of a beam of electrons. Use the information in the figure to answer question 8. What property of the beam of electrons shows that the electrons are travelling at a very high speed? (Answered)
Figure 6 shows a tube for investigating the properties of a beam of electrons. Use the information in the figure to answer question 8. What property of the beam of electrons shows that the electrons are travelling at a very high speed? .
Posted On:Thu 18, March 2021 04:28:25 am
Figure 6 shows a tube for investigating the properties of a beam of electrons. Use the information in the figure to answer question 8. What property of the beam of electrons shows that the electrons are travelling at a very high speed? (Answered)Figure 6 shows a tube for investigating the properties of a beam of electrons. Use the information in the figure to answer question 8. What property of the beam of electrons shows that the electrons are travelling at a very high speed? .
Posted On:Thu 18, March 2021 04:28:25 am
37. Figure 3 shows the main features of a cathode ray tube (CRT) of a cathode ray oscilloscope (CRO).
(i) Describe how the electrons are produced in the tube.
(ii) State and explain the function of the grid.
(iii) State what would be observed on the screen if an a.c voltage is connected across the y-plates.
(iv) State how the deflection system of a television differs from that of a CRO.
(Answered)
Figure 3 shows the main features of a cathode ray tube (CRT) of a cathode ray oscilloscope (CRO). (i) Describe how the electrons are produced in the tube. (ii) State and explain the function of the grid. (iii) State what would be observed on the screen if an a.c voltage is connected across the y-plates. (iv) State how the deflection system of a television differs from that of a CRO. .
Posted On:Thu 18, March 2021 04:24:25 am
Figure 3 shows the main features of a cathode ray tube (CRT) of a cathode ray oscilloscope (CRO).
(i) Describe how the electrons are produced in the tube.
(ii) State and explain the function of the grid.
(iii) State what would be observed on the screen if an a.c voltage is connected across the y-plates.
(iv) State how the deflection system of a television differs from that of a CRO.
(Answered)Figure 3 shows the main features of a cathode ray tube (CRT) of a cathode ray oscilloscope (CRO). (i) Describe how the electrons are produced in the tube. (ii) State and explain the function of the grid. (iii) State what would be observed on the screen if an a.c voltage is connected across the y-plates. (iv) State how the deflection system of a television differs from that of a CRO. .
Posted On:Thu 18, March 2021 04:24:25 am
38. State two differences between the cathode ray tube (CRT) of a T.V and the cathode ray oscilloscope (CRO). (Answered)
State two differences between the cathode ray tube (CRT) of a T.V and the cathode ray oscilloscope (CRO). .
Posted On:Thu 18, March 2021 04:15:27 am
State two differences between the cathode ray tube (CRT) of a T.V and the cathode ray oscilloscope (CRO). (Answered)State two differences between the cathode ray tube (CRT) of a T.V and the cathode ray oscilloscope (CRO). .
Posted On:Thu 18, March 2021 04:15:27 am
39. The control grids in a Cathode Ray Oscilloscope (CRO) is used to control the brightness of the beam on the screen. How is this achieved? (Answered)
The control grids in a Cathode Ray Oscilloscope (CRO) is used to control the brightness of the beam on the screen. How is this achieved? .
Posted On:Thu 18, March 2021 04:11:37 am
The control grids in a Cathode Ray Oscilloscope (CRO) is used to control the brightness of the beam on the screen. How is this achieved? (Answered)The control grids in a Cathode Ray Oscilloscope (CRO) is used to control the brightness of the beam on the screen. How is this achieved? .
Posted On:Thu 18, March 2021 04:11:37 am
40. Define a computer laboratory. (Answered)
Define a computer laboratory. .
Posted On:Fri 12, March 2021 22:35:13 pm
Define a computer laboratory. (Answered)Define a computer laboratory. .
Posted On:Fri 12, March 2021 22:35:13 pm
41. A school decided to set a room aside to be a computer laboratory. The room contained the following: source of power, chairs and tables, a water tap and a sink, and a gaseous fire
extinguisher. Explain the suitability of each of these items in a computer laboratory. (Answered)
A school decided to set a room aside to be a computer laboratory. The room contained the following: source of power, chairs and tables, a water tap and a sink, and a gaseous fire extinguisher. Explain the suitability of each of these items in a computer laboratory. .
Posted On:Fri 12, March 2021 22:33:21 pm
A school decided to set a room aside to be a computer laboratory. The room contained the following: source of power, chairs and tables, a water tap and a sink, and a gaseous fire
extinguisher. Explain the suitability of each of these items in a computer laboratory. (Answered)A school decided to set a room aside to be a computer laboratory. The room contained the following: source of power, chairs and tables, a water tap and a sink, and a gaseous fire extinguisher. Explain the suitability of each of these items in a computer laboratory. .
Posted On:Fri 12, March 2021 22:33:21 pm
42. Mention two areas where analog and minicomputers are used. (Answered)
Mention two areas where analog and minicomputers are used. .
Posted On:Fri 12, March 2021 22:30:23 pm
Mention two areas where analog and minicomputers are used. (Answered)Mention two areas where analog and minicomputers are used. .
Posted On:Fri 12, March 2021 22:30:23 pm
43. State two function of the Num lock key. (Answered)
State two function of the Num lock key. .
Posted On:Fri 12, March 2021 22:28:53 pm
State two function of the Num lock key. (Answered)State two function of the Num lock key. .
Posted On:Fri 12, March 2021 22:28:53 pm
44. Mention two advantages of using a keyboard. (Answered)
Mention two advantages of using a keyboard. .
Posted On:Fri 12, March 2021 22:27:20 pm
Mention two advantages of using a keyboard. (Answered)Mention two advantages of using a keyboard. .
Posted On:Fri 12, March 2021 22:27:20 pm
46. Differentiate between backspace and delete key. (Answered)
Differentiate between backspace and delete key. .
Posted On:Fri 12, March 2021 22:25:08 pm
Differentiate between backspace and delete key. (Answered)Differentiate between backspace and delete key. .
Posted On:Fri 12, March 2021 22:25:08 pm
47. Which keys do DEL and INS represent on the keyboard? (Answered)
Which keys do DEL and INS represent on the keyboard? .
Posted On:Fri 12, March 2021 22:24:11 pm
Which keys do DEL and INS represent on the keyboard? (Answered)Which keys do DEL and INS represent on the keyboard? .
Posted On:Fri 12, March 2021 22:24:11 pm
48. Why is it not advisable to run into and out of a computer lab? (Answered)
Why is it not advisable to run into and out of a computer lab? .
Posted On:Fri 12, March 2021 21:45:17 pm
Why is it not advisable to run into and out of a computer lab? (Answered)Why is it not advisable to run into and out of a computer lab? .
Posted On:Fri 12, March 2021 21:45:17 pm
49. State two ways in which computer is used in floriculture. (Answered)
State two ways in which computer is used in floriculture. .
Posted On:Fri 12, March 2021 21:42:51 pm
State two ways in which computer is used in floriculture. (Answered)State two ways in which computer is used in floriculture. .
Posted On:Fri 12, March 2021 21:42:51 pm
50. Who was referred to as ‘the father of modern computers’ and why? (Answered)
Who was referred to as ‘the father of modern computers’ and why? .
Posted On:Fri 12, March 2021 21:41:01 pm
Who was referred to as ‘the father of modern computers’ and why? (Answered)Who was referred to as ‘the father of modern computers’ and why? .
Posted On:Fri 12, March 2021 21:41:01 pm
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