Aperson drops a brick from the top of a building. the height of the building is 400 m and the mass of the brick is 2.00 kg. what will be the speed of the brick right before it touches the ground? use g = 10.0 m/s2

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Most short-period comets do not have randomly oriented orbits because