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x C Wiley LUS C Physics q Ichegg x X Secure h edugen wileyplus.co m/edugen/student/ E Apps HP Connected Watch NHL Live Stre Al watch NBA Live Strea D X 2017-b R 2015-Bianchi, order Wiley PLUS: Wiley PLUS Cutnell, Physics, 10e GENERAL PHYSICS Home Read, Study & Practice Gradebook ORION ment Assignment open Assignment ruLL SCREEN PRINTER VERSION .BACK NEXT ASSIGNMENT RESOURCES Chapter 12, Problem 019 HW 14 PHYS2001 Stuver Chapter 11 Problem 040 The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 24.9 oc the air gap between the rods is 1.64 x 10 3 m. At enll problem 043 what temperature will the gap be closed? Brass Focus on Concepts uestion 2.0 m k 1.0m 04 Cha er 12 Problem 002 Number Units Chapter 12, Problem 019 the tolerance is +/-2% Chapter 12 Problem 021 Review Score LINK TO TEXT Review Results by Study Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER Waiting for www.google.com Type here to search 4/26/2017Explanation / Answer
We know that
dL = L0*alpha*dT
alpha for brass = 19*10^-6
alpha for aluminum = 23*10^-6
for brass
dLb = Lb*alpha)b*dT
for aluminum
dLa = La*alpha)a*dT
Adding both equations:
dT = (dLa + dLb)/(Lb*alpha)b + La*alpha)a)
dT = 1.64*10^-3/(2*19*10^-6 + 1*23*10^-6)
dT = 26.88
T - 24.9 = 26.88
T = 24.9 + 26.88 = 51.78 C
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