If riding a lawnmower engine exerts 19 hp in one minute to move the lawnmower how much work is done

Aregular polygon has angkes of size 150° each.how many side has the polygon

In a system, when potential energy decreases, then entropy also decreases. true false

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)