Atypical person’s normal metabolic rate (the rate at which energy is consumed) is about 4 x 105 J/h, and the average food energy in a Big Mac is 600 Calories. If a person lived on nothing but Big Macs, how many per day would he or she have to eat to maintain a constant body weight?
Answer to relevant QuestionsA 0.400-kg piece of ice at – oC is placed in an equal mass of water at 30 oC. (a) When thermal equilibrium is reached between the two, (1) all the ice will melt, (2) some of the ice will melt, (3) none of the ice will ...A house can have a brick wall or a concrete wall with the same thickness. (a) Compared with the concrete wall, the brick wall will conduct heat away from the house (1) faster, (2) at the same rate, (3) slower. Why? (b) ...Assuming that the human body has a 1.0-cm-thick layer of skin tissue and a surface area of 1.5 m2, estimate the rate at which heat is conducted from inside the body to the surface if the skin temperature is 34 oC. (Assume a ...A large window measures 2.0 m by 3.0 m. At what rate will heat be conducted through the window when the room temperature is and the outside temperature is if (a) The window consists of a single pane of glass 4.0 mm thick ...A 1600-kg automobile traveling at 55 mph brakes smoothly to a stop. Assume 40% of the heat generated in stopping the car is dissipated in the front steel brake disks. Each front disk has a mass of 3.0 kg. What is the ...
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