Waves

Question 1

What is a transverse wave?

Answer 1

A wave that has oscillations perpendicular to the direction of motion

Question 2

What is a longitudinal wave?

Answer 2

A wave that has oscillations parallel to the direction of motion

Question 3

Define diffraction

Answer 3

The spreading out of a wave as it goes past an object or between two objects

Question 4

What is the name for the stationary point of a wave?

Answer 4

Node

Question 5

What phase difference is 270 degrees?

Answer 5

3/2 π

Question 6

Wave formula?

Answer 6

V=Fλ

Question 7

Formula for period?

Answer 7

T=1/F

Question 8

Constructive interference

Answer 8

Twice amplitude. Frequency and wavelength stay the same.

Question 9

Destructive interference

Answer 9

They cancel out

Question 10

What is the wavelength for the first 4 harmonics?

Answer 10

1st = 2L
2nd = L
3rd = 2L/3
4th = L/2

Question 11

Rule for closed pipes

Answer 11

You can only get odd harmonics

Question 12

Formula for the speed of a transverse wave on a string

Answer 12

V=√(T/μ)

Question 13

Snells law

Answer 13

Refractive Index 1n2=SinI/SinR=V1/V2=λ1/λ2

Question 14

What is the Absolute Refractive Index?

Answer 14

It is from a vacuum instead of air

Question 15

What is the Total Internal Reflection?

Answer 15

Above a critical angle, the light stops refracting and instead reflects