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5412. AT= 53.56 106. Assuming that a human body climbs with an energy efficiency of 20%, how high a hill does a 167 lb hiker need to climb to completely burn off a 1000 (food) calorie meal? (hint: This involves the change in potential energy of the hiker, APE = mgAh, note that 1 kilograms weighs about 2.2 lbs, and that 1 dietary calorie contains 4186 Joules.) a. 3.15 x 10³ m b. 1.91 x 10³ m c. 1.13 x 10³ m d. 2.48 x 10³ m

5412. AT= 53.56 106. Assuming that a human body climbs with an energy efficiency of 20%, how high a hill does a 167 lb hiker need to climb to completely burn off a 1000 (food) calorie meal? (hint: This involves the change in potential energy of the hiker, APE = mgAh, note that 1 kilograms weighs about 2.2 lbs, and that 1 dietary calorie contains 4186 Joules.) a. 3.15 x 10³ m b. 1.91 x 10³ m c. 1.13 x 10³ m d. 2.48 x 10³ m

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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May 10, 2023, 4:32 PM a. Nothing: The waste heat b. Entropy c. Combustion products d. Thermal energy generated only by friction 105. Suppose a suspended mass of 519 kg moves downwards through a distance of 57 m as it turns a paddle wheel in 1.293 kilograms of water initially at a temperature of 2°C: How much will the temperature of the water increase if all the energy released by the falling mass is transfered to and remains in the water? (hint: Recall that Q = mcAT, and consider the change in potential energy of the falling mass, APE = mgAh, as the source of energy here, and that the heat capacity of water is 4186 Joules/(kg.° C) b. 96.4 °C a. 53.6 °C E = mgh = (519 kg) (9.8 m/s²) (57 m) = 289913.4J Q = E=2899 13.4 J = (1.293 kg) (4186J/kg°c) AT c. 145 °C d. 118 °C 5412.498 5412.498 AT = 53.56 106. Assuming that a human body climbs with an energy efficiency of 20%, how high a hill does a 167 lb hiker need to climb to completely burn off a 1000 (food) calorie meal? (hint: This involves the change in potential energy of the hiker, APE = mgAh, note that 1 kilograms weighs about 2.2 lbs, and that 1 dietary calorie contains 4186 Joules.) 0.48 a. 3.15 x 10³ m migh 1 19 b. 1.91 x 10³ m c. 1.13 x 10³ m d. 2.48 x 10³ m 02 c. 3.52 x 10³ J d. 7.39 x 10³ J *$X(4-1863 107. How much heat must be added to 6 moles of an monatomic ideal gas kept at a constant VOLUME to increase its temperature by 47 °C?yancy effec a. 1.06 x 10³ J b. 4.92 x 10³ J 4,186,0 sash outovi 108. How much heat must be added to 3 moles of an monatomic ideal gas kept at a constant PRESSURE to increase its temperature by 44 °C?
Transcribed Image Text:May 10, 2023, 4:32 PM a. Nothing: The waste heat b. Entropy c. Combustion products d. Thermal energy generated only by friction 105. Suppose a suspended mass of 519 kg moves downwards through a distance of 57 m as it turns a paddle wheel in 1.293 kilograms of water initially at a temperature of 2°C: How much will the temperature of the water increase if all the energy released by the falling mass is transfered to and remains in the water? (hint: Recall that Q = mcAT, and consider the change in potential energy of the falling mass, APE = mgAh, as the source of energy here, and that the heat capacity of water is 4186 Joules/(kg.° C) b. 96.4 °C a. 53.6 °C E = mgh = (519 kg) (9.8 m/s²) (57 m) = 289913.4J Q = E=2899 13.4 J = (1.293 kg) (4186J/kg°c) AT c. 145 °C d. 118 °C 5412.498 5412.498 AT = 53.56 106. Assuming that a human body climbs with an energy efficiency of 20%, how high a hill does a 167 lb hiker need to climb to completely burn off a 1000 (food) calorie meal? (hint: This involves the change in potential energy of the hiker, APE = mgAh, note that 1 kilograms weighs about 2.2 lbs, and that 1 dietary calorie contains 4186 Joules.) 0.48 a. 3.15 x 10³ m migh 1 19 b. 1.91 x 10³ m c. 1.13 x 10³ m d. 2.48 x 10³ m 02 c. 3.52 x 10³ J d. 7.39 x 10³ J *$X(4-1863 107. How much heat must be added to 6 moles of an monatomic ideal gas kept at a constant VOLUME to increase its temperature by 47 °C?yancy effec a. 1.06 x 10³ J b. 4.92 x 10³ J 4,186,0 sash outovi 108. How much heat must be added to 3 moles of an monatomic ideal gas kept at a constant PRESSURE to increase its temperature by 44 °C?
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