An aluminium sphere 5 cm in diameter is suspended by a fine thread inside an evacuated jar, so that is can lose heat only by radiation. The sphere's initial temperature is 100°C
and the wall of the jar is always 22°C.
a) What is the initial net rate of heat loss of the sphere?
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Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.