A moon of mass 1 x 10^20 kg is in a circular orbit around a planet. The planet exerts a gravitational force of 2 x 10^21 N on the moon. The centripetal acceleration of the moon is most nearly

As shown in fig. p3.64, a closed, rigid tank fitted with a fine-wire electric resistor is filled with refrigerant 22, initially at 2108c, a quality of 80%, and a volume of 0.01 m3. a 12-volt battery provides a 5-amp current to the resistor for 5 minutes. if the final temperature of the refrigerant is 408c, determine the heat transfer, in kj, from the refrigerant.

What determines the amount of inertia an object has

Which of the following are guidelines to follow for obtaining accurate observations