Author Question: A rod has a length 2.0000 m at 20.0C. The length of the rod increases to 2.0005 m when the ... (Read 62 times)

Pineapplelove6 · **on:** Jul 29, 2018

A rod has a length 2.0000 m at 20.0C. The length of the rod increases to 2.0005 m when the temperature increases to 40.0C. What is the coefficient of thermal expansion of the material from which the rod is made?

A)

2.00 10-5/K
B)

2.50 10-5/K
C)

1.25 10-5/K
D)

5.00 10-3/K
E)

5.00 10-5/K

Question 2

If a length of lucite that is being used as a light pipe gets wet, the critical angle

A)

decreases.
B)

is unaffected.
C)

doubles.
D)

is meaningless since lucite cannot be used as a light pipe.
E)

increases.