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Groups of organs that work together to complete a process in the body are called: a. cells b. tissues c. nerves d. systems

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)

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.