When air freshener is sprayed in a room the smell spreads throughout the room. gases take the shape and volume of their container because the particles a) are close together and in a fixed pattern. b) are far apart from one another and in a fixed pattern. c) are close together and unable to move past one another. d) are spread apart from one another and able to move about.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

What is the coefficient of kinetic friction μk between the block and the tabletop?