# Recent content by Westin

1. ### Charge moves through a circuit element and loses energy

Homework Statement If +6 (C) charge moves through a circuit element, and in so doing the charge loses 12 (J) of energy, then what is the magnitude of the voltage across this circuit element? A)2(V) B)6(V) C)12(V) D)72(V) For the same circuit element and situation described in question 1, is...
2. ### Spinning spokes and clay

is it a rod? My homework is due at 8pm..
3. ### Spinning spokes and clay

Is the first part right with a) and e) being true? and also what do i do for #2 instead?
4. ### Spinning spokes and clay

Homework Statement A device consists of eight balls each of mass 0.78kg attached to the ends of low-mass spokes of length 2.2m, so that the radius of rotation of the balls is 1.1m. The device is mounted in the vertical plane. The axle is held up by supports that are not shown, and the wheel is...
5. ### A ball of mass m is thrown with a velocity v at a disk

Am I correct?
6. ### What is the direction of the red ball's angular momentum

The answer was out of the page, thanks everyone.
7. ### A ball of mass m is thrown with a velocity v at a disk

Homework Statement A ball of mass m is thrown with a velocity v at a disk of mass M which sticks to the rim on impact. https://s3.lite.msu.edu/res/msu/perl_author/P3_PRELECTURE/L_CONSERVATION/IMAGES/CQ1.png For the system of the ball and disk, what is the total initial angular momentum...
8. ### What is the direction of the red ball's angular momentum

So who is right here? I only have one try
9. ### What is the direction of the red ball's angular momentum

It would be going out of the page then!?!?!? because it will be pointing upwards
10. ### What is the direction of the red ball's angular momentum

Vector C will be perpendicular to both A & B. The angle will be between 0 and 180 degrees A x B = A B sin([PLAIN]https://www.physics.uoguelph.ca/tutorials/torque/theta.gif) [Broken] not familiar with right hand rule but I'm trying to learn it right now
11. ### What is the direction of the red ball's angular momentum

it is 180 degrees, I'm still a little lost of what the answer could be though..
12. ### What is the direction of the red ball's angular momentum

Opposite to the momentum?
13. ### What is the direction of the red ball's angular momentum

Cross product is r⃗A × F⃗ This helps you find torque
14. ### What is the direction of the red ball's angular momentum

L = r x p L = same as momentum then ?
15. ### What is the direction of the red ball's angular momentum

Unfortunately that info is not given, but if we assumed it was down wouldn't the answer just be same as momentum?