The Input work on a pulley system is 75 J. If the pulley system is 84% efficient then what is the output work from the pulley system?

When you turn on a battery-operated device, an electrical circuit is

Which branches of natural science include the study of an organism that lived 10 million years ago

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)