Determine how many times greater heat loss occurs

Assignment Help Physics

Reference no: EM13103060

Determine how many times greater heat loss occurs through a glass window thats 80.0 cm high, 70 cm wide, and 0.300 cm thick (k = 0.791 W/m°C) than a electrical supply line running outside to an exterior mounted light. This 30.0 cm long supply line consisting of three copper wires, each 1.50 mm in diameter, that are well insulated and only exposed at the very ends of each wire. The thermal conductivity of copper is 395 W/m°C. Hint: Since this problem is a direct comparison, it really won't make any difference what you choose for inside and outside temperatures.

Reference no: EM13103060

Questions Cloud

Find the launch angle : A projectile is launched from ground level with an initial speed of 52.2 m/s. Find the launch angle (the angle the initial velocity vector is above the horizontal) such that the maximum height of the projectile is equal to its horizontal range. (I..

Similarities-differences of glottochronology-dentochronology : Explain glottochronology, dentochronology, and dendrochronology, and write their similarities/differences. Give examples of these techniques are utilized.

Find electric field at an arbritrary point between two plate : Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 2.50E-5 C/m2 and the other a charge per unit area -2.50E-5 C/m2. Using..

Determine the temperature of the outlet air : A hot air heating system rated at 84,000 Btu/hr has an efficiency of 65%. The furnace fan can move 225 ft3 of air per minute. If the air enters the furnace at 60.0°F, determine the temperature of the outlet air.

Determine how many times greater heat loss occurs : Determine how many times greater heat loss occurs through a glass window thats 80.0 cm high, 70 cm wide, and 0.300 cm thick (k = 0.791 W/m°C) than a electrical supply line running outside to an exterior mounted light.

Adding the error into the regression sum of squares : The analysis needs to be re-run adding the error into the regression sum of squares.

Nonlinear programming problems : Classify the problems as to whether they are pure-integer, mixed-integer, zero-one, goal, or nonlinear programming problems.

Difference between inner and outer surface of glass : 100.0 W tungsten filament bulb generates 95.0 W of heat, which dissipated through glass bulb which has radius of 3.00 cm and 0.500 mm thick. If thermal conductivity of glass is 0.836 W/m°C, determine difference in temp. between inner and outer sur..

Structure of fictionalized history contribute to mama lola : How does structure of fictionalized history and ethnography contribute to the understanding of vodou, Mama Lola, and Karen McCarthy Brown's interaction with Haitian American family?

User Account

All Pages