Ch 6/7: 4.17.19 Weekly Quiz problem set

Question 1

solve for the unknown angle:

Answer 1

69º

Question 2

the given speed of sound is 428 m/s. what is mach 1.35?

Answer 2

578 m/s

(one-step conversion)

Question 3

if a glass has an index of refraction of 2.31, what is the speed of light through it?

Answer 3

1.30 x 10^8 m/s

Question 4

light goes through a plastic at 2.11 x 10^8 m/s. what is the index of refraction?

Answer 4

1.42

(units cancel, left with a pure number)