A bowling ball of mass 2.2kg is rolling along a track at 3.2m/s when it reaches a ramp angled at 55 degrees. The ball rolls up the ramp to the top where the track levels
out again, and the ball rolls at 0.3m/s. How long is the ramp?

The consumption of fossil fuels could be

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

Which describes increasing the efficiency of energy resource