ENG 2:59 PM 5/6/2017 Mastering Physics: Set 11 Homework (lemp & Heat) Google Chr

Question

ENG 2:59 PM 5/6/2017 Mastering Physics: Set 11 Homework (lemp & Heat) Google Chrome Secure https:// ession masteringphysics.com offset next Gen. College Physics I, Spring 2017 with Matt Bryant Set 14 Homework Temp & Hea Problem 16.19 Problem 16.19 Part A A cylinder bore in an aluminum engine block has a What is the diameter of the bore when the engine operates at 120.0 oC? diameter of 95.00 mm at 21.00 C. Express your answer using four significant figures. 95.23 mm Submit My Answers Give Up Correct Part B At what temperature is the diameter of the hole equal to 94.85 mm? Express your answer using two significant figures. T- 22 Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining Help I close previous l 6 of 10 I next

Explanation / Answer

Linear Thermal expansion ceoffiecient for Al ,

alpha = 21*10^-6 m / m K

(B) 94.85 = 95 (1 + (21*10^-6) deltaT )

deltaT = T - 21 = -75.19

T = -54.19 degree C

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