A person pedals 100 PRM and the drive gear has 70 teeth. The driven gear (the one that turns the wheel) has 10 teeth and the wheel has a diameter of 30 inches. How fast are they pedaling. Neglect air resistance.

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.