A compressor does 92 joules of work to compress air conditioner refrigerant. The refrigerant later expands and goes back to equilibrium. According to the First law of thermodynamics, how much thermal energy does the refrigerant release when it expands? a) 2.4 joules
b) 38 joules
c) 92 joules
d) 221 joules

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.

Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?