A wall consists of a concrete layer on the outside and a wood layer on the inside.WThe concrete on the outside is 10.00cm thick and has a thermal conductivity of 0.500m.KWThe wood on the inside is 3.00cm thick and has a thermal conductivity of 0.180m·KTheoutside temperature is 38.00°C and the inside temperature is 22.00°C. The surface area ofthe wall is 25.0m².а.What is the rate of heat flow through the wall?b. What is the temperature in between the concrete and the wood?

Here K1 = thermal conductivity of wood = 0.180 W/m.Kx1 = thickness of wood = 3.00 cm = 3.00 x…

Answered: A wall consists of a concrete layer on…

Similar questions

P2
In a physics lab, students are conducting an experiment to learn about the heat capacity of different materials. The first group is instructed to add a number of 1.50 g pellets made of lead, at a temperature of 92.0°C, to 305 g of water at 16.0°C. A second group is given the same number of 1.50 g pellets as the first group, but these are now aluminum pellets. Assume that no heat is lost to or gained from the surroundings for either group. (a) If the final equilibrium temperature of the lead pellets and water is 25.0°C, how many whole pellets did the first group use in the experiment? The specific heat of lead is 0.0305 kcal/(kg · °C). pellets (b) Will the final equilibrium temperature for the second group be higher, lower, or the same as for the first group? The specific heat of aluminum is 0.215 kcal/(kg · °C). O higher O lower O the same (c) What is the equilibrium temperature of the aluminum and water mixture for the second group? °C
Calculate the heat flow (H) into a refrigerator with a total outer surface area of 5.22m2, and given an outside temperature of 25°C and a fridge temperature of 8°C. The thickness of the walls of the fridge is 5.2 cm and they are insulated with polyurethane foam that has a thermal conductivity of 0.022 W/mk. 37.5W 55.3W 63.6W 77.2W
A glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input. (a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 67.8°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C). *Answer in °C, please
9. The rod below with the cross section surface area of 0.12 m² is laterally insulated. The rod has a thermal conduction constant of 100 W/m.°C. If the temperature along the rod changes according to the function T=ax²+b, develop a model to find the heat which is transferred through the rod? 1 X=0 T=70 °C Heat flow X=2m T=30 °C X
6. Go The block in the drawing has dimensions L, × 2L, × 3L, where L, = 0.30 m. The block has a thermal conductivity of 250 J/(s •m · C°). In drawings A, B, and C, heat is conducted through the block in three different directions; in each case the temperature of the warmer surface is 35 °C and that of the cooler surface is 19 °C. Determine the heat that flows in 5.0 s for each case. Lo 2L0 3Lo B A
A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the balloon less dense then the surrounding air, the balloon is able to lift objects many times its own weight. A large hot air balloon has a maximum balloon volume of 2090 m3. a. If the air temperature in the balloon is 54 °C, how much additional mass, in kilograms, can the balloon lift? Assume the molar mass of air is 28.97 g/mol, the air density is 1.20 kg/m3, and the air pressure is 1 atm.