The element radon is at the opposite end of the range with the lowest specific heat of all naturally occurring elements. At 25°C, radon's specific heat is 94 J/kg°C. If the temperature
of a 0.34 kg sample of radon is to be raised from 0°C to 50°C, how much energy will have
to be added to the radon? Show work.

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.