The source of electricity for one student’s home is a hydroelectric dam. The student plugs in a lamp at home, and the light goes on. Explain the energy transfers from the water at the dam to the lamp at the house.

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.

If element x has 99 protons how many electrons does it have

You are doing a science experiment with a fahrenheit thermometer. your data must be in degrees celsius. if you measure a temperature of 125°f, what is this temperature in degrees celsius