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A cylindrical metal can, 0.1 m high and 0.05 m in diameter, contains liquid helium at...

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Physics

A cylindrical metal can, 0.1 m high and 0.05 m in diameter,contains liquid helium at its normal boiling point of -452.074degrees Fahrenheit. At this temperature Helium's heat ofvaporization is 20.4 kJ/kg. The walls of the helium container are1.2 cm thick and have a thermal conductivity of 13.889 W/(m K). Thehelium container is surrounded by liquid nitrogen at a temperatureof -327.64 degrees Fahrenheit.

A. What is the conductive surface area of the metalcylinder?

B. What is the temperature of the liquid helium in Kelvin?

C. What is the temperature of the walls in Kelvin?

D. What is the rate of heat flow into the Helium due to theconduction?

E. How much Helium is lost per hour due to conduction?

Answer & Explanation Solved by verified expert
4.3 Ratings (513 Votes)
partAConducting surface area of metal cylinder 01 005m2 00157 m2part B Temperature of liquid Helium in K 452074 32 59 273    See Answer
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