Question

B?

Answer 1

I'm actually not sure whether to count the blue antinodes AND the red ones or just one :S

Answer 2

alright I did a bit of research, since the wave can only occupy either the blue position or the red position (not simultaneously) you would only count the nodes on one side, so you would see which one has four "peaks" on the blue or red path (not both)

Answer 3

D?

Answer 4

yes

Answer 5

B

Answer 6

good

Answer 7

A

Answer 8

good

Answer 9

C

Answer 10

good

Answer 11

D

Answer 12

well done

Answer 13

B

Answer 14

huh

I'm really not sure about B because that's a node where two equal waves would cancel out

Answer 15

A

Answer 16

good

Answer 17

A

Answer 18

good

Answer 19

C

Answer 20

in general polarization only changes the plane in which the wave travels

there are two types of interference (constructive and destructive) one makes the amplitude bigger and one makes it smaller

making interference the better choice

Answer 21

D

Answer 22

yeah good

Answer 23

B

Answer 24

so polarization is the process of taking a wave and reducing it to one plane, that's why ~polarized~ sunglasses reduce glare

so polarized is the better answer