To make a given sound seem twice as loud, how should a musician change the intensity of the sound? a. halve the intensity. b.increase the intensity by a factor of 10.c. double the intensity. d.quadruple the intensity. e.quarter the intensity.

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

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)