Aroller coaster is towed up an incline at a steady speed of 0.4800 m/s by a chain parallel to the surface of the incline. the slope is 2.900%, which means that the elevation increases by 2.900 m for every 100.0 m of distance along the surface. the mass of the roller coaster is 402.3 kg. neglecting friction, what is the magnitude of the force exerted on the roller coaster by the chain?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

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

If a balloon is taken outside on a very cold day, what will occur?