vela's latest activity
-
vela replied to the thread Writing a vector parallel and normal to a unit vector ##\hat n##.Assuming ##\hat n## and ##\vec A## are not collinear, the two vectors define a plane. ##\vec A_{\perp n}## and ##\hat n_\perp## have to... -
vela replied to the thread 5 charges within a square boundary.To expand on what @TSny's post, in the first case, the factors in the denominator don't have terms linear in ##\delta##, so they are...
-
When making the approximations for small ##\delta##, you cannot neglect ##\delta## in the denominators as you could in the perturbation...
-
vela replied to the thread Can the braking force be significantly greater than the force acting on the brake structure?.Yes, the initial body comes to rest quickly, which is what the OP wants. The object which absorbed the momentum can then be brought to...
-
vela replied to the thread Can the braking force be significantly greater than the force acting on the brake structure?.If you have the body collide elastically with another object of equal mass, it will transfer all of its momentum to the object in just...
-
vela reacted to physicals's post in the thread Question on magnetism: Circular motion of charged particle in a Magnetic Field with
Sad.
I love how we members on physics forum love to debate about completely useless things even though its wrong 😂😁😂 -
vela replied to the thread Question on magnetism: Circular motion of charged particle in a Magnetic Field.For the left-hand rule, the current is the input and force is the output. That is, it tells you how to calculate the direction of ##\vec...
-
I think they should have used the damped frequency instead of the undamped frequency. I find that these two frequencies differ only by...
