Recent content by allok

Uh, I got it now. I got it now. I didn't notice that problem already stated how many turns coil has.thank you

hi I recently started learning about magnetic fields and magnetic induction. I tried to solve the following two problems, but I got stuck. Could you please help? 1) Current of 15 A is running through the wire loop and magnetic flux throught the wire loop is 3 Wb. What is inductivity L...

Uh, I don't know

It makes sense if we are talking about component of velocity of force, but it doesn't make sense that density would also have a component. Density is just density, and by my ( flawed ) logic it can't have a direction. Can someone reason with my how a density can have a component?

hiya If 'b' is the length of a wire, and 'I' current running trough it, then if put a wire inside magnetic field ( not perpendicullary and also not parallel to magnetic field lines, but some angle in between the two ), then magnetic force on a wire will be: F = I * b * B * sin[angle] where...

hiya I assume the field lines represent the strength of magnetic field and show the direction of magnetic force. So if we put iron filings on paper with magnet near by, then fillings will arrange themselfs in such way to show the direction of the magnetic forces on these iron fillings...

I know vectors can be 'moved', but why is this allowed with momentum vectors? Clearly, a system containing two objects with their veclocity vectors lying on same line differs ( somehow ) from system with velocity vectors parallel, but not lying on the same line. Why would we choose to neglect...

hi I'm really stuck and I hope you can help me. I know that linear momentum is a vector, but I'm still not sure how to add them together when : p1, p2, p ... linear momentum If two objects A1 ( p1 = 100) and A2 ( p2 = -100) represent an isolated system and are moving along (...

hi What is the difference between kmol and mol? I know mol is a unit used to tell the amount of particles in matter. Mol itself is defined as the number of elements in a system ( and it equals 6.023*10^23 -> Avogardo's number ). But what is kilomol? Is it just kmol = 10^3 mol or...

hello 1. a) Does object circling around the Earth have angular momentum or linear momentum? It seems to me that we could use either of the two momentums to describe the system? b)How about when you rotate a ball on piece of string? Again we could describe the object as having...

Below I am assuming object orbiting around the Earth has circular orbit! Biggest problem I have with gravity as being centripetal force for orbiting object is that when talking about centripetal force I tend to think of it as force that simply changes direction of velocity vector.But reason...

hiya Circular motion is really confusing Force perpendicular to velocity is said to change only velocity's direction but not its magnitude. But how about object orbiting the earth? If object orbits the Earth then force of gravity is perpendicular to it and thus is said it only changes its...

I know how we derived F=m*r*w^2 from F=m*a and I also get the basic idea behind the formulas.If you read my questions again perhaps you will notice that my questions are a bit "deeper".

hi I'm stuck so I'd like to ask a couple of questions about circular motion. 1*I know that for certain radius R and certain centripetal acceleration vector ( centr. acc. vector ), magnitude of velocity has to be just right for object ( either point mass or rigid body ) to go in circles...

I don't get it. First of all, v = r\frac{d\theta}{dt} is not same formula as delta(v)=v*delta(theta) I still don't understand why delta(v) = v * delta(theta) would give us correct result when delta(theta) is anything but d\theta ?