Edwin Hubble discovered in 1929 that the distances to far away galaxies were generally proportional to their redshifts. This was seen as strong evidence in favor of
A) relic radiation.
B) the radio spectrum.
C) the Big Bang theory.
D) steady-state theories.

Astate of matter all that has define volume and can flow is a(n)

Avoltaic cell converts chemical energy to

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)