A source of sound is kept in a jar in a vacuum. Air is slowly introduced in to the jar. What happens to the sound coming out of the jar?
a. The loudness of the sound increases gradually.
b. The loudness of the source decreases gradually.
c.The sound remains unchanged
d. The pitch of the sound increases gradually.
e. The pitch of the sound decreases gradually

Question

A source of sound is kept in a jar in a vacuum. Air is slowly introduced in to the jar. What happens to the sound coming out of the jar?
a. The loudness of the sound increases gradually.
b. The loudness of the source decreases gradually.
c.The sound remains unchanged
d. The pitch of the sound increases gradually.
e. The pitch of the sound decreases gradually

anonymous · Answer

Wow you are literally working on the exact same stuff I am. I got this one wrong by the way.

anonymous · Answer

haha yeah im working on this thing called plato

anonymous · Answer

Me too, it's horrible. Physics semester B?

anonymous · Answer

haha yes!

anonymous · Answer

Pitch relates to vibration frequency of the source. Not changing.
Loudness: do you hear any sound when there is a vacuum?