What is the KE of a 4 kg rock rolling at 10 m/s? KE = 1/2 mv2 O 160 J
O 2003
O 40 J
O 400 J

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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)