# HEAT TRANSFER

The door of a domestic refrigerates has an area of 1.7 m2 & it basically consists of a thin metal sheet with a 25 mm thick layer of insulation on the inside. The thermal conductivity of this insulation is 0.25 W / m-deg & heat transfer on each side of the door is 10 W / m2-deg. Determine the heat flow rate through the door & the temperature of the metal sheet. The refrigerated chamber & the room are at 0° C & 20° C respectively. Neglect thermal resistance due to the sheet metal.

1. 👍 0
2. 👎 0
3. 👁 223
1. it is very urgent..............tell any one..............

1. 👍 0
2. 👎 0
2. Please help. its very urgentW

1. 👍 0
2. 👎 0
3. kyu bro paper krna hai kya

1. 👍 0
2. 👎 0
4. ok

1. 👍 0
2. 👎 0
5. It’s an instulator

1. 👍 0
2. 👎 0
6. Wait wrong question. IGNORE MY ANSWER !!!!

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Physics

3. A person exerts a force of 55 N on the end of a door 74 cm wide. What is the magnitude of the torque if the force is exerted a)perpendicular to the door b)at a 45 degree angle to the door, c) at a 125 degree angle to the door?

asked by Bobby on November 4, 2010
2. ### Statistics

The mean cost of domestic airfares in the United States rose to an all-time high of \$385 per ticket. Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and

asked by Sam on June 11, 2014
3. ### Math

Three neighbors – Farid, Pang and Harjit – each own 3 cars; one two-door, one four-door and one five-door. None of the same car brand has the same number of doors. They each have a Honda, Toyota and Mazda. Farid’s Honda has

asked by chun on July 5, 2020
4. ### Physics

A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges.

asked by Ana on March 19, 2010
5. ### physics

A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 86 kg. A person pushes on the outer edge of one section with a force of F = 61 N that is directed perpendicular to

asked by Cindy on May 31, 2012
1. ### Physics

A solid wood door, 90.0 cm wide by 2.00 m tall has a mass of 35.0 kg. It is open and at rest. A small 500-g ball is thrown perpendicular to the door with a speed of 20.0 m/s and hits the door 60.0 cm from the hinged side. The ball

asked by Anonymous on October 26, 2014
2. ### Calculus

Find the exact coordinates of the centroid. y = sqrt[x], y = 0, x = 9. -------------- Is this basically 1/4 of an oval/ellipse? If so then the area would be: pi*9*3, correct? So the X coordinate would equal: 1/Area * Integral from

asked by COFFEE on June 17, 2007
3. ### physics please help:)

A car misses a turn and sinks into a shallow lake to a depth of 8.9 m. If the area of the car door is 0.51 m2, what is the force exerted on the outside of the door by the water? Note: 1 atm = 101.325 kPa. What is the force exerted

asked by Katie on April 1, 2012
4. ### Math

I need help with this questions. a). An overhead garage door has two springs, one on each side of the door. A force of 15 pounds is required to stretch each spring 1 foot. Because of a pulley system, the springs stretch only

asked by Danielle on April 1, 2008
5. ### Physics: Rotational Motion

A 0.005kg bullet travelling horizontally with a speed of 1000m/s enters an 18kg door, embedding itself 10cm from the side opposite the hinges as in figure. The 1m wide door is free to swing on the hinges. a) Before it hits the

asked by Anonymous on October 18, 2012
6. ### Physics

A trap door, of length and width 1.65 m, is held open at an angle of 65.0 degrees with respect to the floor. A rope is attached to the raised edge of the door and fastened to the wall behind the door in such a position that the

asked by Julia on April 27, 2011