Recent content by jen333

Hi! I was looking at notes about voltage and resistance, and this question popped into my head. Homework Statement If a certain length of wire ie)40m with an unknown resistance has a voltage of say 24V (random number) when hooked up to a battery, how does the voltage change throughout the...

Homework Statement A can is filled with water to a depth of 37cm. A hole 12 cm above the obttom of the can produces a stream that is directed at a 34 degree angle ave the horizontal. Find the range and max height of this stream. Homework Equations by kinetcs The Attempt at a Solution...

alright, so I've worked on solving this problem up to: a=1/2 b=1/2 c=-1/2 so my integral terms would be: \frac{1/2}{x+1}-(\frac{(1/2)x-(1/2)}{x^{2}+1}) taking the antiderivative: i have, \frac{1}{2}ln|x+1| for the first term as for the second, i know one of the terms will be...

Oh! I see, i must have miswritten something when i was doing partial fractions. Thank you so much for the help! I 'll give it a shot and see what comes up

Homework Statement Evaluate the integral: \int\frac{dx}{x^{3}+x^{2}+x+1} from infinity to zero Homework Equations lim t--> infinity [/tex] \int \frac{dx}{x^{3}+x^{2}+x+1} The Attempt at a Solution lim t-->infinity [/tex] \int \frac{dx}{(x+1)(x^{2}+1} I'm stuck on where to go...

I've found an answer for ii Ty=N-mg+Tsin45=0 N=mg-Tsin45 Tx=Tcos45-ukN=0 Tcos45=ukN Substituting N into ukn: Tcos45=uk(mg-Tsin45) Tcos45=ukmg-ukTsin45 T= \frac{ukmg}{cos45-uksing45} =\frac{(0.38)(18kg)(9.81)}{cos45-(0.38)(sin45)} =153N I hope this is the right method for...

Thanks for your reply. is there any way of determining N without k. Such as, if it were frictionless?

Homework Statement You are dragging a stack of shoeboxes along the floor by a rope (an odd situation I must say). If the total mass of the shoeboxes is 18kg and the rope is pulled at an angle of 45 degrees with no acceleration i) what is N (normal force)? and ii) What is the tension of...

ok, so now to confirm... ma=F=42N-W and m(2a)=2F=52N-W 2(42N-W)=52N-W 84N-2W=52N-W W=32N ?

for some reason my edit button isn't working... but, to just show what I mean with the W equations: 824.04/w=510.12/w I'm sorry, but I think that i just might've understood your question wrong.

Thx Go1. Glad to know I'm on the right track. I was wondering if I could get some clarification on getting rid of a... if I can use my two W equations to isolate for a I have: a=(42N)(9.81)/W 2a=(52N)(9.81)/W or in general: a=Fg/W I attempted to plug in the first 'a' equation into...

Using Laws of Motion! Homework Statement The acceleration of a brick when lifted by 42N is a. The acceleration of the same brick lifted by 52N is 2a. What is the weight of the brick? Homework Equations Fg=mg Fapp=ma The Attempt at a Solution I don't really know where to start...

Hi! Here's my question on finding arc length. If I've taken the derivative correctly, is there anyway I can simplify it before putting it into the arc length formula? Homework Statement Find the arc length where 0\leqx\leq2 y=(x^{3}/3)+x^{2}+x+1/(4x+4) Homework Equations...

all right! if i did the math right (hopefully) to wrap up this problem I've come to the answer of 3vo^2/8g

ok, let's see so far v(t)=vo-gt when velocity is zero v(t)=0 t=vo/g substituting it into x1=h=volt-0.5gt^2 i get h to be 0.5(vo^2/g) ps: thanks for your help and patience...physics obviously isn't my best subject