Simple Harmonic Motion + Waves II

Question 1

How is the wavelength for pipes that are either both open or closed on both ends?

Answer 1

wavelength = 2L / n

Question 2

How is the frequency for pipes that are either both open or closed on both ends?

Answer 2

f = nv / 2L

Question 3

For pipes closed at one end and open at the other, the wavelength is

Answer 3

wavelength = 4L / n

Question 4

For pipes closed at one end and open at the other, the frequency is

Answer 4

f = nv / 4L

Question 5

Natural frequencies are the

Answer 5

Normal modes of vibration

Question 6

A resonating system is when

Answer 6

Frequency of varying force = natural frequency

Question 7

How is the amp in a resonating system?

Answer 7

It is at its maximum

Question 8

Sound is a

Answer 8

Longitudinal wave

Question 9

The speed of sound is the fastest in

Answer 9

Solids

Question 10

The speed of sound is the slowest in

Answer 10

Gases

Question 11

< 20 Hz are

Answer 11

Infrasonic waves

Question 12

> 20k Hz are

Answer 12

Ultrasonic waves

Question 13

Intensity is the

Answer 13

Power transported per unit area by a sound wave

Question 14

What is the equation of intensity?

Answer 14

W / m^2

Question 15

The amplitude of a sound wave measures its

Answer 15

Energy

Question 16

What is the equation of Power?

Answer 16

P = I • A

Question 17

Intensity is displayed in

Answer 17

Decibels

Question 18

Pitch is the

Answer 18

Change in frequency of a sound wave that enables the listener to recognize change in a musical note

Question 19

How must the oscillation be for sound to be produced?

Answer 19

Longitudinal

Question 20

Sound must be proportional to

Answer 20

• Stiffness
• Pressure
• Temperature

Question 21

Sound is inversely proportional to

Answer 21

Density

Question 22

Sound waves travel slowly through substances which are

Answer 22

Easily distortable

Question 23

Sound waves travel faster through substances which are

Answer 23

Rigid, since they can’t absorb sound