Energy Answers

10 verified answers2 views
6

An arrow is fired at a target on a high wall. How does the energy change between the moment the arrow is fired and the moment it hits the target?

A
The potential energy and kinetic energy remain the same.
B
The potential energy decreases as kinetic energy increases.
C
The kinetic energy decreases as potential energy increases.
D
The kinetic energy remains at zero, but potential energy increases.
7

Thermal energy is the energy associated with

A
electric fields.
B
being stored in chemical bonds.
C
the pull of gravity.
D
temperature.
8

A generator contains a coil that spins to produce an electric current. How is energy transformed by using a generator?

A
Thermal energy is transformed to potential energy.
B
Thermal energy is transformed to mechanical energy.
C
Chemical energy is transformed to electromagnetic energy.
D
Mechanical energy is transformed to electromagnetic energy.
9

What type of energy is the sum of an object’s potential and kinetic energy?

A
mechanical energy
B
electromagnetic energy
C
chemical energy
D
thermal energy

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