A child pushes her toy box one metre along the Floor of her room. even though she is moving the box horizontally, and therefore not working against the force of gravity, she does perform work in this activity. briefly explain why work is performed.

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit