1) A 10.0kg - iron ball is dropped onto the pavement from a height of 500.0m. If half the heat generated goes into warming the ball, find the temperature increase of the ball. (The specific capacity for iron is 450J/kgC. g=10.0m/s²). It is assumed your answer will be in degrees centigrade so just enter a number (Example 15.2C=15.2).

2)What is the ideal efficiency of an automobile engine that operates between the temperatures of 700.0C and 340.0C? It is assumed your answer will be a percentage, so just enter a number. (Example 78%=78).