Yusuf is moving at a speed of 1.4 m/s? and has a mass of 71 kg. How much kinetic energy does he have?

Why do electron microscopes have higher resolving power than light microscopes?

What is a carrier wave and how does it affect what you hear on the radio

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.