When resting, a person has a metabolic rate of about 3.0 * 10^5 joules per hour. The person is submerged neck-deep into a tub containing 1.16 * 10^3 kg of water at 20.30° C. If the heat from the person goes only into the water, find the water temperature after half an hour.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?