Engineering, 08.08.2019 23:20 dancinggrace2032

Let the ends of a copper rod 100 cm long be maintained at 0°c. suppose that the center of the rod is heated to 100°c by an external heat source and that this situation is maintained until a steady state has been reached. a)- find the steady-state temperature distribution. b)- at time t=0 (after the steady state has been reached), let the heat source be removed. at the same instant, let the end x = 0 be placed in thermal contact with a reservoir at 20°c, while the other end remains at 0°c. find the temperature as a function of position and time. c)-plot the temperature u versus x for t = 5, 20, 200, and 500 sec. also plot u versus t for x = 25, 50, and 75 cm. d)-what limiting value does the temperature at the center of the rod approach after a long time? e)-how much time must elapse before the center of the rod cools to within 1°c of its limiting value?

Answers: 3

Show answers

Another question on Engineering

Engineering, 03.07.2019 15:10

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Answers: 1

Answer

Engineering, 04.07.2019 18:20

Prove the equivalence between the two statements of the 2nd law of thermodynamics (i.e., a violation of one statement leads to the violatio the other statement)

Answers: 2

Answer

Engineering, 04.07.2019 19:10

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)

Answers: 3

Answer

You know the right answer?

Let the ends of a copper rod 100 cm long be maintained at 0°c. suppose that the center of the rod is...

Questions