Geothermal energy is considered to be one of the most efficient methods to heat and cool a house, since the ground temperature being harnessed to either heat or cool a house is always around fahrenheit.

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

Why do astronauts in the space shuttle weigh less?