A small pebble one large boulder start at the same height and begin rolling down the side of a mountain. Which object would have less kinetic energy as it craches on the rode at the botton of the mountain

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?