Hello all.
I am given the equation (x^3 y^4)^5 = x-y
my derivative is 1/ (15x^2 20y^3(x^3y^4)^4)=y'
But the book says: y'=(1-15x^14y^20)/(1+20x^15y^19)
Where did I go wrong?
Thanks so much
Chris
Hello all. I am stuck on this homework problem. It wants me to find
\frac {d^2y} {dx^2}
when y= ln x^8
The book answer is \frac {-8}{x^2}
But I only can get \frac {-8}{x^9)}
Please give me some guidance
Thanks
Please correct me if I'm showing my stupidity here, but if the above statement is true, then would whozum's equation be incorrect in that
"F*D=mv^2" or would it be F*D=.5mv^2,
which would make it:
F*D/m=gh --> h=F*D/m*g
Thanks
Chris
Hello everyone. This problem has me stumped.
The questioin asks,
" find the magnitude (current) and direction of both resistor 1 and resistor2"
(in the picture the top resistor is resistor 1)
I know V=IR , but I am stumped at how the different potentials interact with eachorther at...
Hello all. I am kindof stuck on this problem. It asks: The figure below shows three point charges all posotive. If the net electric force on the center charge is zero, what is the value of y/x.
The answers:
a) 4/9
b) \sqrt{2/3}
c) \sqrt{3/2}
d) 3/2
e) 9/4
This is my figuring...
Thanks guys your right, just a plug and chug mistake. I must have been out of it last night, cause I just couldn't get it to work. lol.
thanks a lot
Chris
jamesrc I think I tried what you were saying and I still got the wrong answer.
I did 1/2 m v ^2 = 1/2 k x^2 to find k I used f = 1/2 \pi \sqrt k/m Then x is eqal to A when all the energy is potential. I just don't see what I did wrong?
k=177.65, x=.15, and I find v to be equal to...
Ok this problem does have me stumped. This is the area in the chapter I am a little sketchy on. So here is the prob.
A .5kg mass at the end of a spring vibrates at 3hz, with an amplitude of .15m. What is the velocity when it passes through the equalibrium point.
So I figured that this is...
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I was thinking that when the water gets more shallow that the frequency increases, and the wavelength decreases. but...
Hello everyone. I am in high school physics and currently using the 5th edition giancoli physics book. Is anyone familiar with this book? How good it is... Also if anyone is familiar with this book could you recommend another book that goes over things that this one misses. Or could anyone...
Thanks Lenin.
Sorry about the vagueness of the last problem. let me retype it. A pendulum with a mass of .2kg is at the bottom of its swing. what horizontal distance will it travel when the pendulum bob is 1cm above (vertically) its bottom most position.
hopefully that is a little better...
Hello everyone. First I would just like to say how thankful I am that there is a forum for physics out here. Also I would like to prematurely thank anyone who is going to help me, it is greatly appreciated.
Well I am in ap physics in high school, so this stuff should be cake for you guys...