Suppose a rock is dropped off a cliff with an initial speed of 0 m/s. what is the rock's speed after 5 seconds, in m/s, if it encounters no air resistance

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

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.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction