Recent content by loganblacke

Homework Statement A potential diffference of V = .497 V is applied across a block of silicon with resistivity 8.75 x 10-4 Ωm. The dimensions of the block are width = a = 2.00 mm, and length L = 14.7 cm. The resistance of the block is 54.1Ω, and the density of charge carries is 1.23x1023 m-3...

Finally got it right, 1.821 x 10-9 Apparently e and e on the graphing calculator are two very different things!

I tried using both equations and I'm still getting the wrong answer. Here is what I got.. (1/(4∏*(8.854*10-12)))*((Q1*Q2)/r)=.5(1.67*10-27)(1.23*104)2 Q1 and Q2 would be the charge of each proton which I think is 1.6*10-19 If i solve for r, I get 4.92*1018. Another website said that the...

I tried using 1/2mv2 = q*(1/4∏ε0)(Q/r)... and then solving for r but the answer I ended up with was wrong.

I really really appreciate your help with this but it appears as if there are 50 equations for electric potential energy. I'm assuming the initial kinetic energy would be the 1/2mv2, however it isn't obvious to me which equation to use for the electric potential energy..

Okay so conservation of energy, I get that. Ek = .5(1.67x10-27kg)(1.23x104m/s)2 When the proton stops, Ek = 0, I'm not understanding how this relates to the position of the proton when it stops.

Homework Statement A proton with a speed of 1.23x104 m/s is moving from ∞ directly towards another proton. Assuming that the second proton is fixed in place, find the position where the moving proton stops momentarily before turning around. Homework Equations Potential Energy - U/q = V...

Bill tells the truth one-half of the time and Harry tells the truth two-thirds of the time. Bill says something, and Harry, who knows whether Bill told the truth, says, "Bill just told the truth". What is the probability that Bill told the truth? Let: B = Bill told the truth B' = Bill lied...

How do i determine the direction of the vectors?

In the figure, the net electrostatic force on Q1 is zero. If Q1 = +4.99 nC, determine the magnitude of Qo. Qo = (r0/r1)^2 * abs(q)*2cos theta The figure is attached, please help, I'm so lost with physics II

A metal plate is connected by a conductor to a ground through a switch. The switch is initially closed. A charge of +Q is brought close to the plate without touching it, and then the switch is opened. After the switch is opened, the charge +Q is removed. What is the charge on the plate then...

Two lightweight metal spheres are suspended near each other from insulated string. One sphere has no net charge, the other has a net charge. The spheres will? Homework Equations None The Attempt at a Solution I know opposite charges attract and similar charges repel, but not sure...

Here's an example for you: Find a vector W that bisects the smaller of the two angles formed by 12i+5j and 15i - 8j. Step 1: rewrite as vector A = <12, 5> and Vector B = <15, -8> and find the unit vector for both A and B. Unit Vector = A/|A| = (12, 5)/Sqrt(12^2+5^2) = (12/13, 5/13)...

I figured out the equations but my answer is still wrong, V2 = (m1V1)/(m1+m2) = 4.8 m/s. Then i used the equation .5(m1+m2)(V2^2) = .5kx^2 which when solved for x becomes x = sqrt(((m1+m2)*V2^2)/k) = .2683. I'm getting .2683 which is not one of the listed options on the multiple choice question

I'm a little confused on the conserving momentum part, I did find the equation m1u1+m2u2 = (m1+m2)V.