If the tire reaches a temperature of 48 ∘c, what fraction of the original air must be removed if the original pressure of 250 kpa is to be maintained?

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.

Why is there friction between objects

What is the mass of the same rock on the earth