#7. Suppose I am outside grilling on a 0 °C day. I grill a 0.64 kg steak for 7.0 min. Supposemy grill can transfer heat to my steak at 330 !. How do I like my steaks cooked? Youcan assume that although starting at 0 °C and composed mostly of water, there is no phasechange for the steak. Note that the specific heat capacity for steak is 3490 G: Also notethat a rare steak is cooked to above 130 °F, a meadium-rare steak is cooked to above 140 °F,a medium steak is cooked to above 150 °F, a medium-well steak is cooked to above 160 °F,kg°Cand a well-done steak is cooked to above 165 °F.

Answered: #7. Suppose I am outside grilling on a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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The heat engine shown in the figure uses 2.0 mol of a monatomic gas as the working substance. (Figure 1) Figure p (kPa) 600 400 200 0 0 ہے۔ 0.025 0.050 -V (m³) 1 of 1 Part A Determine T₁, T2, and T3. Enter your answers numerically separated by commas. Express your answer using two significant figures. T₁, T₂, T3 = Submit Request Answer Part B 17 ΑΣΦ AEth: Ws, Q = Submit Determine AEth, Ws, and Q for 1-2. Enter your answers numerically separated by commas. Express your answer using two significant figures. [VD ΑΣΦ ? Request Answer K ? J
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Mc Graw Hill It is commonly recommended that hot foods be cooled first to room temperature by simply waiting a while before they are put into the refrigerator to save energy. Despite this commonsense recommendation, a person keeps cooking a large pan of stew three times a week and putting the pan into the refrigerator while it is still hot, thinking that the money saved is probably too little. But he says he can be convinced if you can show that the money saved is significant. The average mass of the pan and its contents is 5 kg. The average temperature of the kitchen is 23°C, and the average temperature of the food is 95°C when it is taken off the stove. The refrigerated space is maintained at 3°C, and the average specific heat of the food and the pan can be taken to be 3.9 kJ/kg-°C. If the refrigerator has a coefficient of performance of 1.5 and the cost of electricity is $0.165/kWh, determine how much this person will save a year by waiting for the food to cool to room temperature…
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Solar heating of a house is much more efficientif there is a way to store the thermal energy collected during theday to warm the house at night. Suppose one solar-heated homeutilizes a concrete slab of area 12 m2and 25 cm thick. (a) If thedensity of concrete is 2400 kg>m3, what is the mass of the slab?(b) The slab is exposed to sunlight and absorbs energy at a rate of1.4 * 107J>h for 10 h. If it begins the day at 22 °C and has a specificheat of 750 J>1kg # K2, what is its temperature at sunset? (c) Modelthe concrete slab as being surrounded on both sides (contact area24 m2) with a 2.0-m-thick layer of air in contact with a surface thatis 5.0 °C cooler than the concrete. At sunset, what is the rate atwhich the concrete loses thermal energy by conduction throughthe air layer? (d) Model the concrete slab as having a surface areaof 24 m2and surrounded by an environment 5.0 °C cooler thanthe concrete. If its emissivity is 0.94, what is the rate at which theconcrete loses thermal…
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