When a flashlight is left on, its battery eventually "dies." According to the Law of Conservation of Energy, what has happened to the energy that was stored in the battery?

The energy has been destroyed by the chemical reactions inside the battery.

The energy has been converted into light and heat.

The energy has been used up and no longer exists in any form.

The energy has been transferred back to the power grid that charged it.

A person eats an apple, then goes for a run. Which of the following describes the primary energy conversions that occur?

Kinetic energy to chemical energy to thermal energy.

Chemical energy to kinetic energy and thermal energy.

Thermal energy to chemical energy to kinetic energy.

Potential energy to kinetic energy to chemical energy.

The impact with the ground permanently destroys a small fraction of the ball's total energy.

Energy is converted into sound and heat.

The system is not closed, so energy leaks out into the surrounding atmosphere without changing form.

Potential energy is converted to kinetic energy, but the reverse conversion is not possible.

The battery created 50 joules of new electrical energy.

The battery converted 50 joules of chemical energy.

More than 50 joules of chemical energy were destroyed.

The battery absorbed 50 joules of heat from the air.