Which of the following are dwarf planets? check all that apply. ceres namaka eris charon haumea makemake pluto

What is work? how much work is done to move an object 0 meters?

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)

Explain what will happen if decomposers were apsent from a forest ecoysystem.