A student is standing on a very steep hill, kicks a soccer ball horizontally with a speed of 5 m/s toward a student who is sitting on a level field 2.3 meters below. If the second student catches the soccer ball at ground level, how far from the hill was she?

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)

Energy flows from the producer level to the level. is called

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?