Phase difference - single waves

Question 1

When is the phase difference antiphase with standing waves

Answer 1

Every 180 degress

Question 2

What is a standing wave

Answer 2

formed due to superposition of two waves travellin in opposite directions in the same medium

Question 3

How do you find phase difference between two waves when more difficult

Answer 3

calculate x - distance from where one wave begins to the point where the other begins

calculate wavelength of original wave

x/lambda * 2pi

Question 4

What is a coherent wave

Answer 4

same frequency osciallate in phase or with a constant phase relationship - coherent sources

Question 5

How are standing waves formed

Answer 5

two progressive waves of same type and freq meet when travelling opposite directions

Question 6

What is to important to remember about stationary waves

Answer 6

wave formed doesn’t progress and there is no net transfer of energy

Question 7

What is an anti node

Answer 7

maximum amplitude point on a stationary wave

Question 8

What is a node

Answer 8

no amplitude point on a sationary wave

Question 9

What does the first harmonic represent

Answer 9

half wavelength between nodes

Question 10

What is the rule for frequency between harmonics

Answer 10

1st harmonic = f
2nd harmonic = 2f
3rd harmonic = 3f

Question 11

what is the relationship between anitnodes and harmonic

Answer 11

same anitnodes and level of harmonic

Question 12

What is the relationship between nodes and harmonic

Answer 12

one more node then the harmonic number

Question 13

In standing waves what are the rules for phase

Answer 13

ONLY in phase
or anti phase

Question 14

What is the rule for points between two adjacent nodes

Answer 14

Any points between two adjacent nodes are in phase with eachother