A car has a weight of 10 000 N. A man takes 10 seconds to push the car 5 m using a force of 1000 N. calculate the work done

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?