Recent content by Phyman1109

Oh...thanks.

How can I apply kcl on transistor considering it as a single node since transistor can act as source or sink for electrons due to combination with holes

Just started multivariate course, can't figure out this simple question. If f(u,v,w) is a function of 3 variables. And u, v and w are themselves function of t. Then does f(u,v,w)=0 implies df/dt=0 or df/du=0. or both.

oops..i got it..i was making a mistake: i was measuring distance to end of the palm. Thanks.

i am saying that when i roll the pen under my hand from fingertips to end of palm without letting my hand slip over the pen, the pen traverse the same distance as the length of my palm which it should cover only half of the length.

we know that in rolling motion the top of drum has linear velocity 2v if the centre of mass has linear velocity v. thus if a board moves over a drum without slipping it wil roll 2vt=2L if the center of mass moves vt=L in time t, and this result is independent of size of the drum. but when i do...

However, in calculating gravitational potential energy of system of mass M and m, if we place our origin at the initial (or final) position of the particle of mass m,(which we are free to do so, because only difference in potential matters), we get one of the term as infinity in the...

In the line integral of work done by conservative forces, should we care about the direction of force and differential displacement if we choose different coordinate system? The formula of potential energy comes out to be different if we choose different coordinate system.

Why does a body accelerate when it experiences a net force? Is there any change in molecular state of the body when it experiences a force?

But if he add a fictitious force in opposite direction he will write -F=ma i.e. a=(-F/m) getting acceleration in -x direction whereas to the observer in inertial frame it is in +x direction.

My problem is this: to the man C on the earth, both cars are accelerating(say is +ve direction of x). So, both are experiencing a force F=ma towards +ve x axis. But the man in car A thinks that the car B is not accelerating. So no force is acting on car B according to man in car A. Hence, to get...

Please explain the concept of pseudo forces by considering an example of two cars say A and B, accelerating in the same direction. How will Newton's law applied to the man in car B as noted by the man in car A differs from that of the man standing on the earth? And how will the man in car A...