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A block has the dimensions L, 2L, and 3L. When one of the L × 2L faces is maintained at the temperature T1 and the other L × 2L face is held at the temperature T2, the rate of heat
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- Note: Round off your answer up to 3 decimal places. Input only the numerical value. Researchers are conducting a study to quantity the thermal conductivity of a composite material. A square box is made from 838 cm2 sheets of the composite insulating material that is 2.8 cm thick. A 201 W heater is placed inside the box. Sensors attached to the box show that the interior and exterior surfaces of one face have reached the constant temperatures of 81°C and 38°C. What is the thermal conductivity in W/m-K?arrow_forward2.5 kg of water (c = 4190 J/(kg⋅K)) is heated from T1 = 14° C to T2 = 24° C. Input an expression for the heat transferred to the water, Q. Calculate the value of heat transferred to the water Q in joules, using the expression from part (a). To the heated water 0.5 kg of water at T3 = 20° C is added. What is the final temperature of the water, in kelvin?arrow_forwardThe block in the drawing has dimensions Lox2Lox3L0,where Lo =0.4 m. The block has a thermal conductivity of 300 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 27 °C and that of the cooler surface is 13 °C Determine the heat that flows in 3 s for each case.arrow_forward
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- Heat Q, which has the SI unit of joule (J), is the quantity in mechanical engineering that describes the transit of energy from one location to another. The equation for the flow of heat during the time interval At through an insulated wall is KAAT Q = (Тh — T) where k is the thermal conductivity of the material from which the wall is made, A and L are the wall's area and thickness, and Th – T; is the difference (in degrees Celsius) between the high- and low-temperature sides of the wall. By using the principle of dimensional consistency, what is the correct dimension for thermal conductivity in the SI? The lowercase Greek character kappa (K) is a conventional mathematical symbol used for thermal conductivity. Appendix A summarizes the names and symbols of Greek letters. О a. (W-m)/°C O b. °C/(W. m) O c. (m . °C)/W O d. W/(m . °C)arrow_forwardThe block in the drawing has dimensions Lox2Lox3Lowhere Lo=0.4 m. The block has a thermal conductivity of 100 J/(s-m-C¹). 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 26 °C and that of the cooler surface is 16 °C Determine the heat that flows in 4s for each case. Problem 6 (a) Q = (b) Q = (c) Q = i 2.40E3 i 5.40E3 10800 A Lo 340 240 J B <arrow_forwardthe second pic is the available units to use in the answerarrow_forward
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