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Conservation of Energy
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1. In which of these is chemical energy stored?
1 point
an apple
a moving car
a stretched rubber band
a lit bulb
Clear selection
2. What kind/s of energy does an object have as it is falling through the sky?
1 point
kinetic energy
sound energy only
chemical energy only
potential energy only
Clear selection
3. Which device will demonstrate the energy transformations as shown below?
1 point
An electric stove
A fluorescent light bulb
A kerosene lamp
A battery operated torch light
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4. Energy can be transferred or transported by ALL of the following EXCEPT
1 point
waves
conduction
collision
division
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5. What is the momentum in kg m/s, of a tyre of mass 6kg rolling along at a velocity of 3 m/s?
1 point
0.5
2.0
18
180
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The diagram below shows a simple pendulum in motion.
6. Look at the diagram of a pendulum in motion above. Which row in the table below correctly identifies the positions when the potential energy and the kinetic energy of the pendulum are maximum?
1 point
A
B
C
D
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7. Which of the following forms of energy is NOT output from an electric drill when used to drill into a wall?
1 point
heat energy
kinetic energy
nuclear energy
sound energy
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8. According to the conservation of linear momentum, if two vehicles collide, what would happen in the system?
1 point
The total momentum would be different
The total momentum will remain the same
The total momentum would be zero
The total momentum would increase
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9. What is the velocity of car B after the collision? (Define movement to the right as being positive)
1 point
10 m/s
8 m/s
5 m/s
2 m/s
Clear selection
10. The diagram below shows a transverse wave. Which of the following is NOT an example of a transverse wave?
1 point
water waves
light waves
radio waves
sound waves
Clear selection
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