Mass m is raised to a vertical height h above the ground and then released. After the mass has fallen three-fourths of the way to the ground, its kinetic energy will be? a. (mgh)/4 b. (3mgh)/4 c. mgh d. (4mgh)/3

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant