An electric dyer consumes 7.2 x106 joules of electrical energy when operating at 220 Volts from and AC voltage source for 45 minutes. Determine the current that the dyer draws during operation

Protons and neutrons are found within the nucleus of an atom

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

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