A 0.300 kg mass is attached to a 26.6 N/m spring. It is pulled
0.120 m and released. How much
Potential Energy does it have when
it is 0.0600 m from equilibrium?
(Unit = J)

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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.

Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?