1.) Sound cannot travel through which of the following mediums?
A. vacuum B. solid C. gas D. liquid
2. The slower the vibrations, the _____ the pitch.
A. higher
B. louder
C. slower
D. lower
2007-05-01 14:56:48 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
1.a
2.d
2007-05-01 15:09:37 · answer #1 · answered by bumbee14 4 · 0⤊ 0⤋
1.) Since it works via vibrations, sound is a mechanical wave and needs a medium to travel through. Therefore, it can move through anything with mass, and the only choice that does not have mass is a vacuum, so the answer is A.
2.) Lower. Ever heard of the doppler effect? It uses this. The faster the higher, and the slower the lower.
2007-05-01 22:02:04 · answer #2 · answered by Ewaj 3 · 0⤊ 0⤋
A: vacuum - sound needs some medium to conduct the sound waves
B: lower - the vibration speed is a measure of the frequency (how often the wave passes a point) and the lower the frequency the lower the sound is to our ears.
Watch guitar strings when they are plucked - the lower sound comes from strings that vibrate slower than the higher sounds (physics in the real world).
2007-05-01 22:00:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
THESE ARE NOT CHEMISTRY QUESTIONS. How about moving over to Science-land?
Your answere are A for 1 and lower for 2.
2007-05-01 22:00:57 · answer #4 · answered by cattbarf 7 · 0⤊ 0⤋
1) the answer is a and 2)the answer is D
2007-05-01 23:32:31 · answer #5 · answered by Dr. Eddie 6 · 0⤊ 0⤋
1- A
2- B
HINT
these queations are more related to physics try to search physics sites
2007-05-01 22:49:48 · answer #6 · answered by angelgirl 2 · 0⤊ 0⤋