the warszawa radio tower in poland is 646 m above the ground. suppose a worker at the top f the tower accidentally knocks a tool off the tower. if the force acting on it is 3.6 N, and it’s acceleration is 9.8 m/s^2. (acceleration due to gravity) what is the tools mass?

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

What happens in a global convection cell