Physics, 04.03.2020 05:29 chrissulli4605
A simple procedure for measuring surface convection heat transfer coefficients involves coating the surface with a thin layer of material having a precise melting point temperature. The surface is then heated and, by determining the time required for melting to occur, the convection coefficient is determined. The following experimental arrangement uses the procedure to determine the convection coefficient for gas flow normal to a surface. Specifically, a long copper rod is encased in a super insulator of very low thermal conductivity, and a very thin coating is applied to its exposed surface. If the rod is initially 25 degree C and gas flow for which h = 200 W/m2 * K and T infinity = 300 degree C is initiated, what is the melting point temperature of the coating if melting is observed to occur at t = 400 s?
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Physics, 21.06.2019 20:30
Ahorizontal wire is tied to supports at each end and vibrates in its second-overtone standing wave. the tension in the wire is 5.00 n, and the node-to-node distance in the standing wave is 6.28 cm. (a) what is the length of the wire? (b) a point at an anti- node of the standing wave on the wire travels from its maximum upward displacement to its maximum downward displacement in 8.40 ms. what is the wire's mass?
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Physics, 22.06.2019 04:20
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A simple procedure for measuring surface convection heat transfer coefficients involves coating the...
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