Asolid silver sphere of radius a = 2.5 cm has a net charge qin = - 3.0 mc. the sphere is surrounded by a concentric copper spherical shell of inner radius b = 6.0 cm and outer radius c = 9.0 cm. the shell has a net charge qout = +2.0 mc. a) what is the electric potential at the outer edge of the copper shell, given the potential at infinity is zero? b) what is the electric potential on the inner edge of the copper shell? c) what is the electric potential at the center of the silver sphere?

What is the fate of the electrons that interact with a specimen in an electron microscope?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)