(a) How much heat transfer (in kJ) is necessary to raise the temperature of a 0.190 kg piece of ice from -22.0°C to 126°C,including the energy needed for phase changes? (Assume the substance remains at a constant volume throughout eachstage of the heating process.)k)(b) How much time (in s) is required for each stage, assuming a constant 21.5 k)/s rate of heat transfer? (Enter your answersas a comma-separated list. Enter your times in order from the earliest stage to the final stage of the heating process.)(e) Make a oranh of temnerature versus time for this nrocess.

Answered: Image /qna-images/answer/926c26d9-979d-4027-b528-d548a13d3092.jpg

Answered: (a) How much heat transfer (in kJ) is…

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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(a) You have a styrofoam container with 815 g of a soft drink (specific heat of 4,100 J/(kg · °C)) at 29.0° and you add a 60 g chunk of ice at 0°C. Assume the liquid and water mix uniformly as the ice melts and determine the final temperature of the mixture (in °C). 375.31 X Since the mixture is thermally isolated, the heat gained by the ice and the associated ice water is equal to the heat lost by the liquid. Write expressions for the heat gained by the ice as it changes from a solid to a liquid, gained by the ice water as it warms to the final temperature, and lost by the liquid as it cools to the final temperature. °C (b) What If? What is the minimum mass of the ice cube (in g) that will result in a final mixture at exactly 0°C? 290.1 g
It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg man runs on a treadmill for 30min and at a (total) metabolic energy expenditure rate of 1000W. Using the 1st law of thermodynamics, estimate the amount of energylost in heat during that time. A)1800kJB)1350kJC)450kJD)1000kJ
A cheese ripening room which, has a total surface area of A = 25.0m2, has to ensure that the inside temperature does not exceed 11.0°C at all times. If the maximum outside temperature is 35.0°C and the cheese ripening room has an air conditioner which provides 125 kW of cooling, calculate the how thi ck the wooden walls would need to bein mm, in order to ensure the inside temperature do es not go above 11.0°C. Assume that the thermal W conductivity, k of wood is 0.0800 Assume that the entire cheese ripening room is m.C made of wood (including ceiling and floor) and ignore any losses through the door as it remains closed most of the time and is well sealed. Given: P = KA(Tinside –Toutside ) L
An automobile has a mass of 1,547 kg, and its aluminum brakes have an overall mass of 10.2 kg. (a) Assuming all the internal energy transformed by friction when the car stops is deposited in the brakes and neglecting energy transfer, how many times could the car be braked to rest starting from 29.0 m/s before the brakes would begin to melt? (Assume an initial temperature of 20.0°C. Count only the number of times the car can come to a complete stop without the brakes melting in the process. The melting point of aluminum is 660°C.)
In some countries, liquid nitrogen is used on dairy trucks instead of mechanical refrigerators. A 3.00-hour delivery trip requires 170 L of liquid nitrogen, which has a density of 808 kg/m3. (a)Calculate the heat needed in kilocalories to evaporate this amount of liquid nitrogen and raise its temperature to 2.50°C. (You must use cp, and you can assume it is constant over the temperature range.) This is the amount of cooling the liquid nitrogen supplies. _____________________ kcal (b)What is this in kilowatt-hours? _________ kW · h (c)How much cooling in kilocalories would be obtained from melting an identical mass of 0°C ice? ____________kcal
(a) What is the rate of energy loss in watts per square meter through a glass window 3.5 mm thick if the outside temperature is -17°F and the inside temperature is +73°F? (b) A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 5.5 cm between the two windows. What now is the rate of energy loss if conduction is the only important energy-loss mechanism? (The thermal conductivity of window glass is 1.0 W/m-K, and of air is 0.026 W/m-K.) (a) Number (b) Number Units Units
(a) What is the rate of energy loss in watts per square meter through a glass window 2.4 mm thick if the outside temperature is -7.8°F and the inside temperature is +81°F? (b) A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 6.0 cm between the two windows. What now is the rate of energy loss if conduction is the only important energy-loss mechanism? (The thermal conductivity of window glass is 1.0 W/m-K, and of air is 0.026 W/m-K.) (a) Number i (b) Number i Units Units
(a) How much heat transfer (in kcal) is required to raise the temperature of a 0.650 kg aluminum pot containing 3.00 kg of water from 10.0°C to the boiling point and then boil away 0.600 kg of water? X kcal Enter a number. (b) How long (in s) does this take if the rate of heat transfer is 600 W (1 watt = 1 joule/second (1 W = 1 J/s))?

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