Physical Quantities and Units (II)

[sakuralim]

HI Hi ^^
need help again

1. The viscous drag [i:2f39b02284]F[/i:2f39b02284] on a sphere moving in a liquid depends on [i:2f39b02284]a[/i:2f39b02284], radius of sphere, [i:2f39b02284]v[/i:2f39b02284] its velocity and [i:2f39b02284]n[/i:2f39b02284] the viscousity of the liquid. Use the method of dimension to derive an equation for [i:2f39b02284]F[/i:2f39b02284] in terms of [i:2f39b02284]a, v and n.[/i:2f39b02284]

2. The velocity of sound in medium depends on the wavelength [i:2f39b02284]L[/i:2f39b02284], Young modulus [i:2f39b02284]E[/i:2f39b02284] and density [i:2f39b02284]p[/i:2f39b02284] of the medium. Use the method of dimension to derive an equation for [i:2f39b02284]v[/i:2f39b02284] in terms of [i:2f39b02284]L, E and p.[/i:2f39b02284]

someone please help me
I will be very glad and thank you so much for your help ^^

[Fu-Kwun Hwang]

I already show you how to do dimension analysis in another post. http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=326

Please follow the same step and try it out by yourself.
If you still have problem , please post what you have done and I will try to help you.
But I do not want to post the answer before you try it out first.

[sakuralim]

hehe
Well I try my best and crack my brain
at last, I understand it.
hehe
thanks to you, HWANG

[Fu-Kwun Hwang]

Try to find out the answer by yourself is better than view the answer from some where.
It good to hear that you understand it.