Evaporator tubes in a refrigerator are constructed of 1 inch OD aluminum tubing with 1/8 in thick walls. The air surrounding the tubing is at 25ºF and the refrigerant in the evaporator is at 15ºF. Estimate the heat transfer to the refrigerant over 1 foot of length.
What will be an ideal response?
Physics & Space Science
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It would be very unlikely to find a massive, young star out in the halo
Indicate whether the statement is true or false
Physics & Space Science
If the efficiency of a Carnot engine were to be 100%, the cool reservoirs would have to be
A) at absolute zero. B) at 0°C. C) at 100°C. D) infinitely hot.
Physics & Space Science
The fundamental frequency of a violin string is 440 hertz. The frequency of its second harmonic is
A) 220 hertz. B) 440 hertz. C) 880 hertz. D) none of the above
Physics & Space Science
Which of the following claims cannot be proved or disproved by science?
A) The universe is about 2000 years old. B) The universe started out very hot. C) The universe is about 14 billion years old. D) The universe was created by God.
Physics & Space Science