A tow truck pulls a 7,800 N car 5m out of a ditch in 6.5 seconds. How much power does the tow truck have?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

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)