Determine the amount of energy necessary to raise 51 kg of aluminum by 156 degrees Celsius. Report your answer in units of Joules using scientific notation (#.##E#). Assume that no phase change takes place. Use the specific heat values listed in table 11.1 from the textbook.
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- A poker is a stiff, nonflammable rod used to push burning logs around in a fireplace. For safety and comfort of use, should the poker be made from a material with (A) high specific heat and high thermal conductivity, (B) low specific heat and low thermal conductivity, (C) low specific heat and high thermal conductivity, or (D) high specific heat and low thermal conductivity? Please explain the correct answer. Thank you.Define the term molar heat capacity at constant volume?How much internal energy in Joule is generated when a (1.67x10^1)-g lead bullet, traveling at (4.9000x10^2) m/s, comes to a stop as it strikes a metal plate? Give your answer with three significant figures.
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- A person eats a dessert that contains 170 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J. See Section 12.7.) The skin temperature of the person is 36 °C and that of her environment is 18 °C. The emissivity of her skin is 0.71 and its surface area is 1.5 m2. How many hours would it take her to emit a net radiant energy from her body that is equal to the energy contained in this dessert?A person eats a dessert that contains 280 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J.) The skin temperature of this individual is 36°C and that of her environment is 24° C. The emissivity of her skin is 0.75 and its surface area is 1.3 m2. How much time would it take for her to emit a net radiant energy from her body that is equal to the energy contained in this dessert?