the volume v of a gas at a constant temperature varies inversely with the pressure p. when the volume is 100 cubic inches the pressure is 25 pounds per square inch. What is the pressure when the volume is 125 cubic inches?

Question

30••
20
25
40

The length of a violin string varies inversely as the frequency of its vibrations. A violin string 10 inches long vibrates at a frequency of 512 cycles per second. Find the frequency of an 8-inch string.

409.6
512
640••
612

Answer 1

1st one needs work

p v = k ... as volume goes up , pressure goes ?

Answer 2

Okay so I believe that the first one is 30 pounds per square inches I did my work and I got 31.25

And
2 . 409.6 cycles per second

Let me know if I’m correct

Answer 3

1. (100/125 ) * 25 =

2. 10/8 * 512 = 640 cps.

Answer 4

1. B 50
2. C 20
3. B 25
4. B 20 pounds per square inch
5. C 640 cycles per second

Answer 5

idek is correct!