NotTim
  • NotTim
In a ripple tank, a point on the the third nodal line from the centre is 35.0cm from another. The sources are 11.2cm apart and vibrate in phase at 10.5Hz. Calculate the wavelength and the speed of the waves.
Mathematics
schrodinger
  • schrodinger
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NotTim
  • NotTim
I haven't done the question. Just wondering what the values correspond with what variables?
NotTim
  • NotTim
f= 10.5Hz, d=11.2cm, n=3, l=35.0cm. That's what I think. The formulas gunna be tricky too.
anonymous
  • anonymous
each node appear at half a waveleght \[35 cm=3 \frac{\lambda}{2}\] \[\lambda=35*3/2\]

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anonymous
  • anonymous
noone answered before because you posted in wrong group
anonymous
  • anonymous
\[v= f \lambda\]
NotTim
  • NotTim
Sorry. Came back. How do I post in right group? NEw format messed me up.
anonymous
  • anonymous
it's not new format, just join other group and post there
NotTim
  • NotTim
ok
NotTim
  • NotTim
i already joined the physics group. how do i post there.
anonymous
  • anonymous
change your group to physics and same like in this group
NotTim
  • NotTim
It won't let me change.
NotTim
  • NotTim
When I look at it, its greyed out.
NotTim
  • NotTim
The thing I use to use to change the groups.
anonymous
  • anonymous
what you use to change groups?
NotTim
  • NotTim
The thing under the question box. Where it says Current Group:

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