#1
Ive got this problem and i cant figure it out and its driving me crazy, can anyone help me out?

I found the frequency, and thought the speed would be 12/1.4, which comes to 8.57 m/s. so i thought f=speed/wavelength, so 8.57/5.4=1.58 Hz. what am i doing wrong?
#2
i used to have to do that **** for astronomy, stupid online homework.
Quote by Eminored
Hentai. It's a completely different world that will rip your eye-sockets and and skull-screw you with its tentacles.
#3
Is frequency == wavelength/velocity instead?

[IN PHIL WE TRUST]


Quote by Trowzaa
I only play bots. Bots never abandon me. (´・ω・`)

#4
no velocity=frequency*wavelength

andd the period of a wave is the time taken for 1 wave to pass a point if that helps
#5
Quote by SteveHouse
Is frequency == wavelength/velocity instead?


F=W/V
F=5.4/8.57=0.63 Hz, INCORRECT
something is wrong with my velocity, but idk how to get it from this graph
#6
1.429 Hz ?
Quote by Habit Zero
This dude wins for logic.

Logic is invisible, just like your new trophy Blu.
#9
Quote by BluBluBlu
1.429 Hz ?


yes

wave's period= 0.7 s

T=1/F (=) F=1/0.7 (=) F=1.429 Hz
#10
Quote by reelbigfish2020
thats it, thanks! what did i do wrong?

Well, i calculated the period from the first graph: 1,3-0,6=0,7 s
frequency=1/period, so 1/0,7 is your answer.

Edit: beaten
Quote by Habit Zero
This dude wins for logic.

Logic is invisible, just like your new trophy Blu.
Last edited by BluBluBlu at Feb 5, 2009,
#11
OH.

Why is the speed 12/1.4? If the wavelength is 5.4m, the super-rough speed would be (disgustingly) 5.4m/.7s. This is easier than I'm making it, I'm sure. That's 7.714 m/s (I think).

SHEdit: /pointless effort

[IN PHIL WE TRUST]


Quote by Trowzaa
I only play bots. Bots never abandon me. (´・ω・`)

#12
umm.. if youre looking for the frequency my physics book says that f=1/T=w/2pi
w= angular velocity
so i looked at the graph and guessed that time for one oscillation is about 0.7 seconds. so i put 1/.7 and got about 1.4286 rounded. i really have no idea if this is right we havent gone this far in my physics class. but i figured id guess and possibly help.