A small motor uses 200 watts to do 4000 joules of work. How much time this take to occur?​

The softest and hardest minerals are: softest hardest

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength