ENGINEERING FUNDAMENTALS
6th Edition
ISBN: 9781337705011
Author: MOAVENI
Publisher: CENGAGE L
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Chapter 11, Problem 20P
To determine
Find the temperature rise in aluminum plate after 10 seconds.
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Q2/ How much heat does 50g of aluminum give off as it cools from 100c° to 10c°?
for aluminum c=88 J/Kg.c°.
A dual-pane window in a house is composed of two parallel panes of glass, each with an
area of 2.23 m². Each pane of glass is 3.10 mm thick and the space between the panes
is 12.5 mm thick and is filled with argon.
(a) Calculate the heat flow through the window if the indoor temperature is 18.3°C and
the outdoor temperature is -20.6°C (this is about -5°F).
(b) Determine the temperature on the inside of the pane (this is in the argon-dilled
region) closest to the outside of the house.
a metal is heated up to 500 degree celsius. it is then exposed to a room temperature of 38 degree celcius. after 2.mins the temperature of the metal becomes 190 degree celsius. when will the temperature be 100 degree celsius? what is the temperature after 4 mins?
Chapter 11 Solutions
ENGINEERING FUNDAMENTALS
Ch. 11.2 - Prob. 1BYGCh. 11.2 - Prob. 2BYGCh. 11.2 - Prob. 3BYGCh. 11.2 - Prob. 4BYGCh. 11.2 - Prob. 5BYGCh. 11.2 - Prob. BYGVCh. 11.4 - Prob. 1BYGCh. 11.4 - Prob. 2BYGCh. 11.4 - Prob. 3BYGCh. 11.4 - Prob. 4BYG
Ch. 11.4 - Prob. BYGVCh. 11.6 - Prob. 1BYGCh. 11.6 - Prob. 2BYGCh. 11.6 - Prob. 3BYGCh. 11.6 - Prob. 4BYGCh. 11.6 - Prob. BYGVCh. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Alcohol thermometers can measure temperatures in...Ch. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 6PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - Calculate the R-value for the following materials:...Ch. 11 - Calculate the thermal resistance due to convection...Ch. 11 - Prob. 11PCh. 11 - Prob. 12PCh. 11 - Prob. 13PCh. 11 - Estimate the change in the length of a power...Ch. 11 - Calculate the change in 5 m long copper wire when...Ch. 11 - Prob. 16PCh. 11 - Prob. 17PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Prob. 23PCh. 11 - Prob. 24PCh. 11 - Prob. 26PCh. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - Prob. 30PCh. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - Prob. 33PCh. 11 - Prob. 34PCh. 11 - Prob. 35PCh. 11 - For Problems 11.11, 11.12, and 11.13, calculate...Ch. 11 - Prob. 37PCh. 11 - Prob. 38PCh. 11 - Prob. 39PCh. 11 - Prob. 40PCh. 11 - Prob. 41PCh. 11 - Prob. 42PCh. 11 - Prob. 43PCh. 11 - Prob. 44PCh. 11 - Prob. 45PCh. 11 - Prob. 46PCh. 11 - Prob. 47PCh. 11 - Prob. 48PCh. 11 - Prob. 49PCh. 11 - Prob. 51PCh. 11 - Prob. 52PCh. 11 - Prob. 53PCh. 11 - Prob. 54PCh. 11 - Prob. 55P
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- An aluminum pipe has a length of 68 m at a temperature of 15°C. An adjacent steel pipe at the same temperature is 10 mm longer. At what temperature will the aluminum pipe be 30 mm longer than the steel pipe? Assume that the coefficient of thermal expansion for the aluminum is 22.5×106/°C and that the coefficient of thermal expansion for the steel is 12.5x10-6/°C. Answer: °℃arrow_forwardA blacksmith immersed a piece of steel at 600°F into a large bucket of water with a temperature of 65°. After 1 minute the temperature of the steel was 200°. How much longer must the steel remain immersed to bring its temperature down to 97°? The steel must remain immersed ☐ more minute(s). (Round to the nearest tenth as needed.)arrow_forwardAn aluminum pipe with a length of 60 m at a temperature of 10°C rests freely on the ground. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. (a) At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are a=23x10-6/°C and as-12x10-6/ c, respectively.) (b) What is the axial stress developed in the aluminum pipe when the temperature was increased? 5 mm Aluminun Steel Figure No. 1arrow_forward
- An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10.0°C. Two metallic blocks are placed into the water. One is a 50.0-g piece of copper at 80.0°C. The other has a mass of 70.0 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20.0°C. (a) Determine the specific heat of the unknown sample?arrow_forwardNewton's Law of Coolingarrow_forwardA brass rod and an aluminum rod are 90.00 cm and 90.06 cm, respectively, at 20°C. At what common temperature will the two rods be exactly the same length? Linear coefficient of Expansion per degrees Celsius for Bronze and Aluminum are 19x10^(-6) and 24x10^(-6), respectively. 113.33 C 123.33 C C. 133.33 C d. 143.33 C a. b.arrow_forward
- 3. According to Newton's Law of cooling', the rate at which the heat is lost by a heated body is proportional to the difference in temperature between the body and the surrounding medium (when the temperatutre difference is very small). If a thermometer is taken outdoor, where the temperature is 6°C, from a room which temperature is 25C, and the reading drops 15°C in one minute, how long after its removal from the room will the reading be 8°C? after 45 secs what is the thermometer reading?arrow_forwardAn aluminum pipe has a length of 60 m at a temperature of 10° C. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are aAL=23x 10^-6°C and as=12x10^-6° C respectively)arrow_forwardA 2.0-kg aluminum block is originally at 10 degrees celcius. If 36 kJ of energy are added to the block, what is its final temperature (in Kelvin)? The specific heat of aluminum is 900 J/kg K The answer (in fundamental SI unit) is?arrow_forward
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