A steel strut near a ship's furnace is 1.75 m long, with a mass of 1.46 kg and a cross-sectional area of 1.00  10-4 m2. During operation of the furnace, the strut absorbs thermal energy in a net amount of 2.50  105 J. (a) Find the change in temperature of the strut. °C(b) Find the increase in length of the strut.  m(c) If the strut is not allowed to expand because it's bolted at each end, find the compressional stress developed in the strut. Pa

When resting, a person has a metabolic rate of about 4.2 x 10 5 J/h. The person is submerged neck deep into a tub containing 1.0 x 10 3 kg of water at 27.00 °C. If the heat from the person goes only into the water, find the water temperature after half an hour.

A thermal window, with an area of 6.0m ^ 2, is constructed of two layers of glass, each 4.0mm thick, separated from each other by a 5.0mm air gap. If the inner surface is at 20.0 ° C and the outer surface is at -5.0 ° C, what is the rate of energy transfer by conduction through the window? The thermal conductivity of glass is 0.8 W⁄ (m. ° C) and that of air is 0.023 W⁄ (m. ° C)

Ice of mass 12.8 kg at 0°C is placed in an ice chest. The ice chest has 2.7 cm thick walls of thermal conductivity 0.07 W/m·K and a surface area of 1.29 m2. Express your answers with appropriate mks units. (a) How much heat must be absorbed by the ice during the melting process? (b) If the outer surface of the ice chest is at 39° C, how long will it take for the ice to melt?

(a) What is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a 1.40-m2 surface area? Assume that the animal’s skin temperature is 32.0ºC , that the air temperature is −5.00ºC , and that fur has the same thermal conductivity as air. (b) What food intake will the animal need in one day to replace this heat transfer?

A steel beam being used in the construction of a skyscraper has a length of 37.000 m when delivered on a cold day at a temperature of 16.000°F. What is the length of the beam when it is being installed later on a warm day when the temperature is 94.000°F? (Give your answer to at least five significant figures.) m

A square pane of glass 0.500 m on a side is 6.00 mm thick. Whenthe temperatures on the two sides of the glass are 25.0°C and -10.0°C,the heat current due to conduction through the glass is 1.10 * 10^3 W.(a) What is the thermal conductivity of the glass? (b) If the thickness of theglass is increased to 9.00 mm, what will be the heat current?

A thin glaze is applied on the surface of a thick ceramic block by heating it above 650◦C, which allows it to flow over the surface. On cooling, the glaze becomes sufficiently stiff at 500◦C to act as a solid (Fig. 3). Calculate the stresses in the glaze layer by assuming it to be in a state of plane stress in the X1 − X2 plane when it has cooled to 20◦C. The thermal expansion coefficients of the glaze (g) and ceramic (c) are respectively, αg = 4.0 × 10−6/◦C and αc = 5.5×10−6/◦C. Take E = 300GPa and ν = 0.15 for the glaze and the block. Assume the stresses in the block to be negligible.

A glass coffee pot has a circular bottom with a 9.00-cm diameter in contact with a heating element that keeps the coffee warm with a continuous heat transfer rate of 50.0 W(a) What is the temperature of the bottom of the pot, if it is 3.00 mm thick and the inside temperature is 60.0ºC ?(b) If the temperature of the coffee remains constant and all of the heat transfer is removed by evaporation, how many grams per minute evaporate? Take the heat of vaporization to be 2340 kJ/kg.

(a)Calculate the rate of heat conduction (in W) through house walls that are 10.5 cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors. The surface area of the walls is 145 m2 and their inside surface is at 21.5°C, while their outside surface is at 5.00°C. ________________ W   (b)How many 1 kW room heaters would be needed to balance the heat transfer due to conduction? (Round your answer to the next whole integer.)   ______________________ 1 kW room heaters