Objects a and b have unlike charges. they are placed some distance apart and are exerting an electric force on each other. what relationship does the inverse square proportionality in coulomb's equation explain? . a) distance and charge on either a or b. b) force and charge on both a and b together. c) force and distance. d) force and charge on either a or b

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

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