2. A 10 g coin is dropped about 30 m, from the top of the physics build- ing into a container with 100 g of water. Amazingly, no water splashes out of the container. Assuming all of the coin's potential energy is converted into heat that warms both the coin and the water, by how much do their temperatures increase? You may assume that the spe- cific heats are 387 J/kgoC for the coin, and 4186 J/kg C for the water. The coin warms by 0.38C, but the water warms by 0.0035 C b) 140 C c 0.007. C d) 1.290 C e) 0.78.C