In which state of matter would expect to find water on earth's surface if the temperature is -25c a solid
b liquid
c gas
d plasma

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

This is the substance(s) formed in a chemical reaction.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final