Amplify Magnetic Fields Chapter 2

What is the relationship between potential energy and height?

• The potential energy of an object decreases as its height increases.

• The potential energy of an object is independent of its height.

• The higher an object is positioned, the more potential energy it has due to gravity.

• Potential energy is only related to the mass of the object, not its height.

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What is gravitational force?

• The force that repels two masses from each other.

• The force of attraction between two masses, such as the Earth and an object.

• The force that keeps objects in motion indefinitely.

• The force that acts only on objects in space.

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When do magnets have the most potential energy?

• When they are far apart from each other.

• When they are in a neutral position.

• Repelling magnets have the most potential energy when they are close to each other.

• When they are aligned in the same direction.

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What type of energy do magnets have when they are not moving?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

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What happens to energy in a closed system?

• Energy is created and destroyed.

• Energy is conserved; it can change forms but cannot be created or destroyed.

• Energy can only be created, not destroyed.

• Energy is lost to the environment.

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What is an example of kinetic energy in everyday life?

• A stationary bicycle

• A moving car

• A parked airplane

• A closed book

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What is kinetic energy?

• The energy of an object at rest.

• The energy of an object in motion.

• The energy stored in an object due to its position.

• The energy released during a chemical reaction.

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What is elastic force?

• A force that acts on an object in motion

• The force exerted by a material when it is stretched or compressed, such as in a slingshot.

• A gravitational force that pulls objects towards the Earth

• A magnetic force that attracts or repels certain materials.

How does potential energy convert to kinetic energy?

• Potential energy converts to kinetic energy when an object is set in motion, such as when a slingshot is released.

• Potential energy remains constant until the object reaches the ground.

• Kinetic energy is always greater than potential energy in a moving object.

• Potential energy can only convert to thermal energy, not kinetic energy.

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What happens to potential energy when an object falls?

• It remains constant throughout the fall.

• It increases as the object falls.

• It decreases while kinetic energy increases.

• It is converted entirely into thermal energy.

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