An object of mass m is dropped from height h above a planet of mass m and radius r. find an expression for the object’s speed as it hits the ground.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?