Author Question: A 0.600-mm diameter wire stretches 0.5 of its length when it is stretched with a tension of 20 N. ... (Read 87 times)

abern · **on:** Jul 27, 2018

A 0.600-mm diameter wire stretches 0.5 of its length when it is stretched with a tension of 20 N. What is the Young's modulus of this wire?

A) 5.66 1010 N/m2
B) 3.54 109 N/m2
C) 1.41 1010 N/m2
D) 6.43 109 N/m2
E) 2.78 109 N/m2

Question 2

For total internal reflection to take place, light must go from a medium of lower index of refraction to a medium of higher index of refraction.

Indicate whether the statement is true or false