Energy can be used to do which of the following. A) Change structure
B) Make something move.
C) Change temperature
D) All of these
E) Make something stop

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.

What was the first instrument to ever record an earthquake?

What does si stand for,when referring to a system of measurement