Amechanical wave generally does not a. move through a medium. b. move the medium from one place to another. c. move through solids. d. disturb the medium.

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)

Write a polynomial function with the given zeros x= -1,0,2show your work

Which planet do you think would be easiest for humans to colonize some day?