Which of the following is used to calculate mechanical advantage? dr/de

Fe/Fr

de/dr

Fr/Fe

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

An object's buoyant force and weight mean the same thing. a. trueb. false

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.