Physics Chapter 8: Waves and Sound

Question 1

Equation for the velocity of sound

Answer 1

B = bulk modulus

Question 2

Bulk modulus

Answer 2

measures how much pressure is needed to compress a substance by a certain amount

Question 3

Sound moves fastest in solids because solids are

Answer 3

Non-compressible

Question 4

Intensity is defined by

Answer 4

Question 5

Standing waves occur when

Answer 5

Waves are reflected back in a constrained medium

Question 6

Equations for wavelength and frequency for open pipes and strings

Answer 6

But strings have NODES at both ends (fixed ends)

Open pipes have ANTINODIES at both ends

Question 7

Equation for wavelength and frequency for closed pipes

Answer 7

M is supposed to be wavelength (error)

And ONLY USE ODD INTEGERS

Question 8

For fixed strings, harmonic is equal to

Answer 8

Number of antinodes

Question 9

For open pipes, the harmonic is equal to

Answer 9

Number of nodes