FUND.OF PHYSICS(LL)-PRINT..W/ACCESS
12th Edition
ISBN: 9781119773504
Author: Halliday
Publisher: WILEY
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Chapter 18, Problem 84P
(a) Calculate the rate at which body heat is conducted through the clothing of a skier in a steady-state process, given the following data: the body surface area is 1.8 m2, and the clothing is 1.0 cm thick; the skin surface temperature is 33°C and the outer surface of the clothing is at 1.0°C; the thermal conductivity of the clothing is 0.040 W/m · K. (b) If, after a fall, the skiers clothes became soaked with water of thermal conductivity 0.60 W/m · K, by how much is the rate of
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(a) Calculate the rate at which body heat is conducted through the clothing of a skier in a steady-state process, given the following
data: the body surface area is 1.6 m2, and the clothing is 1.9 cm thick; the skin surface temperature is 33°C and the outer surface of the
clothing is at 0.69°C; the thermal conductivity of the clothing is 0.060 W/m-K. (b) If, after a fall, the skier's clothes became soaked with
water of thermal conductivity 0.60 W/m-K, by how much is the rate of conduction multiplied?
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(a) Calculate the rate at which body heat is conducted through the clothing of a skier in a steady-state process, given the following data: the body surface area is 1.8 m2, and the clothing is 1.0 cm thick; the skin surface temperature is 33 C and the outer surface of the clothing is at 1.0 C; the thermal conductivity of the clothing is 0.040 W/mK. (b) If, after a fall, the skier’s clothes became soaked with water of thermal conductivity 0.60 W/mK, by how much is the rate of conduction multiplied?
(a) What is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a 1.40−m2 surface area? Assume that the animal’s skin temperature is 32.0ºC, that the air temperature is −5.00ºC, and that fur has the same thermal conductivity as air.
(b) What food intake will the animal need in one day to replace this heat transfer?
Chapter 18 Solutions
FUND.OF PHYSICS(LL)-PRINT..W/ACCESS
Ch. 18 - The initial length L, change in temperature T, and...Ch. 18 - Materials A, B, and C are solids that are at their...Ch. 18 - A solid cube of edge length r, a solid sphere of...Ch. 18 - Suppose the temperature of a gas is 373.15 K when...Ch. 18 - a In 1964, the temperature in the Siberian village...Ch. 18 - At what temperature is the Fahrenheit scale...Ch. 18 - On a linear X temperature scale, water freezes at...Ch. 18 - ILW Suppose that on a linear temperature scale X,...Ch. 18 - At 20C, a brass cube has edge length 30 cm. What...Ch. 18 - ILW A circular hole in an aluminum plate is 2.725...
Ch. 18 - An aluminum flagpole is 33 m high. By how much...Ch. 18 - Prob. 11PCh. 18 - An aluminum-alloy rod has a length of 10.000 cm at...Ch. 18 - SSM Find the change in volume of an aluminum...Ch. 18 - When the temperature of a copper coin is raised by...Ch. 18 - ILW A steel rod is 3.000 cm in diameter at 25.00C....Ch. 18 - SSM WWW An aluminum cup of 100 cm3 capacity is...Ch. 18 - At 20C, a rod is exactly 20.05 cm long on a steel...Ch. 18 - GO A vertical glass tube of length L = 1.280 000 m...Ch. 18 - One way to keep the contents of a garage from...Ch. 18 - SSM A small electric immersion healer is used to...Ch. 18 - A certain substance has a mass per mole of 50.0...Ch. 18 - Prob. 25PCh. 18 - What muss of butter, which has a usable energy...Ch. 18 - SSM Calculate the minimum amount of energy, in...Ch. 18 - How much water remains unfrozen after 50.2 kJ is...Ch. 18 - In a solar water heater, energy from the Sun is...Ch. 18 - ILW What mass of steam at 100C must be mixed with...Ch. 18 - The specific heat of a substance varies with...Ch. 18 - Nonmetric version: a How long does a 2.0 105...Ch. 18 - An insulated Thermos contains l30 cm3 of hot...Ch. 18 - A 150 g copper bowl contains 220 g of water, both...Ch. 18 - A person makes a quantity of iced tea by mixing...Ch. 18 - GO Ethyl alcohol has a boiling point of 78.0C, a...Ch. 18 - GO Calculate the specific heat of a metal from the...Ch. 18 - SSM WWW a Two 50 g ice cubes are dropped into 200...Ch. 18 - Suppose 200 J of work is done on a system and 70.0...Ch. 18 - A sphere of radius 0.500 m, temperature 27.0C, and...Ch. 18 - The ceiling of a single-family dwelling in a cold...Ch. 18 - If you were to walk briefly in space without a...Ch. 18 - ILW A cylindrical copper rod of length 1.2 m and...Ch. 18 - Prob. 57PCh. 18 - A solid cylinder of radius r1 = 2.5 cm, length h1...Ch. 18 - GO Figure 18-46 shows the cross section of a wall...Ch. 18 - Ice has formed on a shallow pond, and a shady...Ch. 18 - GO Evaporative cooling of beverages. A cold...Ch. 18 - In the extrusion of cold chocolate from a tube,...Ch. 18 - Prob. 68PCh. 18 - In a certain solar house, energy from the Sun is...Ch. 18 - The average rate at which energy is conducted...Ch. 18 - What is the volume increase of an aluminum cube...Ch. 18 - SSM The temperature of a 0.700 kg cube of ice is...Ch. 18 - SSM A sample of gas expands from an initial...Ch. 18 - Prob. 82PCh. 18 - SSM The temperature of a Pyrex disk is changed...Ch. 18 - a Calculate the rate at which body heat is...Ch. 18 - SSM A 2.50 kg Jump of aluminum is heated to 92.0C...Ch. 18 - A glass window pane is exactly 20 cm by 30 cm at...Ch. 18 - A recruit can join the semi-secret 300 F club at...Ch. 18 - An athlete needs to lose weight and decides to do...Ch. 18 - Soon after Earth was formed, heat released by the...Ch. 18 - Prob. 91PCh. 18 - A rectangular plate of glass initially has the...Ch. 18 - Suppose that you intercept 5.0 103 of the energy...Ch. 18 - A thermometer of mass 0.0550 kg and of specific...Ch. 18 - On finding your stove out of order, you decide to...Ch. 18 - Prob. 99PCh. 18 - Prob. 100PCh. 18 - Prob. 101PCh. 18 - Prob. 102PCh. 18 - Prob. 103PCh. 18 - Prob. 104PCh. 18 - Prob. 105PCh. 18 - Prob. 106PCh. 18 - Prob. 107PCh. 18 - Prob. 108PCh. 18 - Prob. 109P
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- An aluminum rod 0.500 m in length and with a cross-sectional area of 2.50 cm2 is inserted into a thermally insulated vessel containing liquid helium at 4.20 K. The rod is initially at 300 K. (a) If one-half of the rod is inserted into the helium, how many liters of helium boil off by the time the inserted half cools to 4.20 K? Assume the upper half does not yet cool. (b) If the circular surface of the upper end of the rod is maintained at 300 K, what is the approximate boil-off rate of liquid helium in liters per second after the lower half has reached 4.20 K? (Aluminum has thermal conductivity of 3 100 W/m K at 4.20 K; ignore its temperature variation. The density of liquid helium is 125 kg/m3.)arrow_forwardFor a temperature increase of 10 at constant volume, what is the heat absorbed by (a) 3.0 mol of a dilute monatomic gas; (b) 0.50 mol of a dilute diatomic gas; and (c) 15 mol of a dilute polyatomic gas?arrow_forward(a) What is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a I .40-m surface area? Assume that the animal's skin temperature is 32.0 , that the air temperature is 5.00 , and that has the same thermal conductivity as air. (b) What food intake will the animal need in one day to replace this heat transfer?arrow_forward
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