Stationary Waves/Harmonics

Question 1

What is a stationary wave?

Answer 1

Result of superposition of two progressive waces with the same frequency travelling in opposite directions. Can be produced from any type of wave.

Question 2

Define node

Answer 2

A point with zero amplitude

Question 3

Define antinode

Answer 3

A point of maximum displacement/amplitude

Question 4

What is the time period and frequency of stayionary waves?

Answer 4

The same as the progressive wave that forms it

Question 5

do stationary waves tranfer energy

Answer 5

No net energy transfer

Question 6

Is frequency the same for all points of a stationary wave

Answer 6

Yes except for nodes where f = 0

Question 7

What is the seperation between adjacent nodes/antinodes

Answer 7

λ/2

Question 8

What is the seperation between an adjacent node and antinode

Answer 8

λ/4

Question 9

How does amplitude vary in stationary waves?

Answer 9

Varies from zero at the node to max at the antinodes

Question 10

What is phase difference in stationary waves?

Answer 10

180° x n

n = no nodes between points

Question 11

Define Fundamental frequency

Answer 11

The minimum frequency of vibration for a given arrangement

Question 12

Define first harmonic/fundamental node of vibration

Answer 12

Has frequency equal to fundamental frequency

Question 13

What do all harmonics of stationary waves have in common?

Answer 13

The frequency is a multiple of the fundamental frequency

Question 14

Is there a node or an antinode at the end of open tube

Answer 14

Antinode

Question 15

Is there a node of an antinode at the end of a closed tube

Answer 15

Node

Question 16

How do u determine speed of a stationary wave?

Answer 16

Use length of tube and find the wavelength
REARRANGE CORRECTLY
sub into v = λf