Question

Which change will increase the speed of a sound wave traveling in a solid aluminum rod?

A) changing the rod from a solid to a liquid
B) changing the rod from a solid to a gas
C) decreasing the temperature of the rod
D) increasing the temperature of the rod

Answer 1

A and B are both wrong. The speed of sound will decrease if you do either A or B.

|Since C and D are opposites, one of them is right if nothing else is. The higher the temperature the greater the speed of sound.

Choose D <<<<======== as the correct answer.

Answer 2

Answer:

D. increase temp of rod

Explanation: