SYNTHESIZE IT Refer to the graph titled "State Changes of Water” in your book. Imagine that you reverse the process to remove heat from water vapor. Describe the changes to the temperature and energy at each level (a - d) in the reverse process.​

Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.