Gold and platinum occur in nature as

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little