An expandable container holds 2.30 mole of He gas with an initial pressure of 770 kPa and an initial volume of 2.10 L. The gas expands isothermally to a final pressure of 350 kPa. How much heat is gained by the gas in this process?

A) 1280 J
B) 792 J
C) 685 J
D) 1370 J
E) 1700 J


A

Physics & Space Science

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Determine the heat transfer coefficient for liquid bismuth flowing through an annulus (5-cm-ID, 6.1-cm-OD) at a velocity of 4.5 m/s. The wall temperature of the inner surface is 427°C and the bismuth is at 316°C. It may be assumed that heat losses from the outer surface are negligible.

GIVEN

FIND
The heat transfer coefficient
ASSUMPTIONS
Steady state
Heat losses from outer surfaces are negligible
SKETCH

PROPERTIES AND CONSTANTS
for bismuth at the bulk temperature of 316°C

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A student kicks a soccer ball in a high arc toward the opponent's goal. At the highest point in its trajectory:

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