A 0.3 kg piece of ice at 0° C is placed in 1 kg of water at 40° C in an insulated container. If no heat is lost to the container, what is the
final temperature of the water?

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?