I need help finding the answers for these 2 questions, I would highly appreciate it. What force needed to stretch a spring with k = 100N/m a total of 20 mm?A. 1 NВ. З NC. 2 ND. 100 N What is the change in length of a 100 mm aluminumbar that has increased in temperature by 550c. Thecoefficient of thermal expansion of aluminum is 2.5 x10-5 , Oc.A. 0.1375 mmB. 1.230 mmC. 1.37 mmD. 0.258 mm

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What force needed to stretch a spring with k = 100 N/m a total of 20 mm? А. 1 N В. 3 N C. 2 N D. 100 N

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter10: Thermal Physics

Section: Chapter Questions

Problem 22P: A construction worker uses a steel tape to measure the length of an aluminum support column. If the...

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I need help finding the answers for these 2 questions, I would highly appreciate it.

What force needed to stretch a spring with k = 100
N/m a total of 20 mm?
A. 1 N
В. З N
C. 2 N
D. 100 N

What is the change in length of a 100 mm aluminum
bar that has increased in temperature by 550c. The
coefficient of thermal expansion of aluminum is 2.5 x
10-5 , Oc.
A. 0.1375 mm
B. 1.230 mm
C. 1.37 mm
D. 0.258 mm

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