Amelia Earhart was an aviation pioneer. During an attempt to make a circumnavigational flight of the globe in 1937 her plane disappeared over the ocean. If her plane had hit a rock in the ocean they both would sink together. 1) Elastic
2) Inelastic
3) Explosion

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.