Recent content by Leeoku

i just edited while u posted, I am guessing that's the right reasoning?

Homework Statement I got question 10 and need help on 11 [PLAIN]http://lulzimg.com/i23/abf9f8.jpg Homework Equations C = Q/VThe Attempt at a Solution At first i thought it was a simple c = q/v and solve for Q but that wasnt right. Is that because the circuit splits off in two parts and a...

Homework Statement [PLAIN]http://lulzimg.com/i23/62babd.jpg Homework Equations The Attempt at a Solution im not sure why this is an answer. The first part I noticed is that it is an insulating sphere. Insulator means that all the charges can't leave the sphere. What i do know is...

i don't understand what to integrate from the left side. How am i supposed to express it with relation to the origin or do i just take the right integral and multiply by 2?

Homework Statement . A wire of finite length that has a uniform linear charge density λ=6.22×10-9 C/m is bent into the shape shown below. [PLAIN]http://lulzimg.com/i23/7498af.jpg Answer: 2.98e+02 VHomework Equations V = k integral (dq/r)The Attempt at a Solution So i think my integrals are...

oh that's how the 2 comes about. thanks <3

so... if i assume it is a parabola... let's say it is initially at height H. It starts going to a max with V initial at V_y. It goes to a max and starts coming down. Once it passes height H again.. will it have the same velocity again? If so... does that mean for my equation v = v_0+at...

Homework Statement An electron is projected at an angle of 30.8° above the horizontal at a speed of 8.20×105 m/s in a region where the electric field is E = 388j N/C. Neglecting the effects of gravity, calculate the time it takes the electron to return to its initial height. Answer...

ok using v=d/t, 56.2/3.14 = 17.9 m/s Impulse = delta p = (sum F)delta T Delta p = 15.9*3.14 = 50 N.s Using 50 as momentum, p = mv 50 = 17.89 M m = 2.8 kg Weird part is answer is given in Newtons, so mass*g = 27.4 N. Still not right, close though..

i actually have no clue. what I am puzzled at is why they gave us distance. the first thing that comes to mind is work, but i don't think that helps..

Homework Statement 13. Water falls at the rate of 271 g/s from a height of 56.2 m into a 776g bucket on a scale (without splashing). If the bucket is originally empty, what does the scale read after 3.14 s? Answer: 2.50e+01 N Homework Equations Density, estimate 1kg/m^3 F = ma (a =...

got it! thanks for the explanation on CM

Homework Statement A 3.15 kg ball and a 6.30 kg ball are connected by a 1.31 m long rigid, massless rod. The rod is rotating clockwise about its center of mass at 24.2 rpm. What torque will bring the balls to a halt in 6.97 s? Answer: 1.31e+00 N*m Homework Equations torque = I*alpha...

cant i just convert the alpha to a/r to get I*a/r^2. but then i don't get how to eliminate the massses. Tension 2 takes the weight of both so... its (M1+M2)g Tension one would be Tension 2 - mass2*g im not sure if my logic is right

Homework Statement A m2 = 4.63 kg mass is connected by a light cord to a m1 = 2.10 kg mass on a smooth surface (see the figure below).The pulley rotates about a frictionless axle and has a moment of inertia of 0.513 kg•m2 and a radius of 0.257 m. Assuming that the cord does not slip on the...