Two charged spheres are a fixed distance apart. If the charge on each sphere is increased from 2C to 6C, the electrostatic force between the
spheres is
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Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?