Question

Help please

Answer 1

http://screencast.com/t/PU7L6zTY

Answer 2

@gleem

Answer 3

@UnkleRhaukus

Answer 4

I don't understand phase in this context.

Answer 5

hmmm nvm thanks :)

Answer 6

@mathslover

Answer 7

Is that a test?

Answer 8

yes past paper

Answer 9

@mathslover can u help

Answer 10

No sorry, too busy

Answer 11

oh okay

Answer 12

@Callisto @.Sam.

Answer 13

looks like they are a quater cycle outta phase to me

Answer 14

X is at the point when \(t=\frac{\pi}{4}\)
for Y \(t=\frac{3\pi}{4}\)
Difference between the two is phase difference
\[\frac{3\pi}{4}-\frac{\pi}{4}=\frac{\pi}{2}\]

Answer 15

the nodes are the points that dont move up and down. the antinodes are the bits that oscillate between top and bottom

Answer 16

I'm sorry, I'm wrong :/