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1. Discuss the modes of heat transfer that determine the equilibrium temperature of a space shuttle when it is in orbit. What happens when it re-enters the earth's atmosphere?
2. A closed plastic container, used to serve coffee in a seminar room, is made of two layers with an air gap placed between them. List all heat transfer processes associated
with the cooling of the coffee in the inner plastic vessel. What steps do you consider necessary for a better container design so as to reduce the heat loss to ambient.
Assume the power entering a section of the waveguide is Po and calculate the power loss as a percentage of this power.
Determine the maximum speed at which the car with mass can pass over the top point A of the vertical curved road and still maintain contact with the road.
Draw a clear force diagram form.
The diameter of the tube is 13 cm and its length is 60 m. Determine the overall heat transfer coefficient of this heat exchanger using (a) LMTD and (b) -NTU method.
a person is trying to fill a 10.0 gallon bucket by hand with a dipper. one dipper of water is added each second and the
What is the function of the system -
50 degree c water is flowing in a 10mm diameter smooth tube. the mass flow rate of the water is 0.08 kgs. the water
heat is transferred steadily to boiling water in a pan through its flat bottom at a rate of 650 w. if the temperature
The filter ofProb. 30.7 is operated at a constant rate of 0.6 gal/ft2-min from the start of the run until the pressure drop reaches 70 lb f/in. 2 and then at a constant pressure drop of 70IbJ/in.' until a total of 1400 gal of filtrate is obtai..
Draw a schematic of the system @ t = t0, identifying all the key properties of the system, boundary, surroundings, etc.At some intermediate time t = t1, the pressure in the tank is equal to Psurr
the accerleration of a particle is defined by the relation a a - 6t2 where a is constant. at t 0 the particle starts
Determine the speed of the 50 kg cylinder after it has descended a distance of 2 m starting from rest. Gear A has a mass of 10 kg and a radius of gyration of 125 mm about its center of mass
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