Recent content by sbhit2001

I understand the concept of balancing chemical equations but in the case of redox reactions I don't understand the physical meaning of balancing in acid medium and balancing in Basic medium. Sure, I know how to balance the equation but I want to know what it means physically. Why do we need to...

Can you please tell me what do you mean by the component dr?

Sorry I meant to say position instead of potential.

If this is the case then how to integrate to find the potential difference if I just shift the position of O in the situation described by Tanya a bit downwards from its current potential while keeping the position of all other points same.

I think it should be tangent to the circle as the difference between two adjacent position vectors would be tangent to the circle.

Thanks a lot Tanya! You really helped me in my understanding! Can you just tell me one more thing? Can you just give me a hint on how to process with the integration when the point O is shifted down by some distance while keeping the position off all other points same? What would be the...

Problem - Find the potential difference between 2 pts given the electric fields at all points in the surroundings. Approach- Let one point be A and one point be B. Thus, Va - Vb=- integral from b to a(E vector. dr vector) Also I can write the opposite equation, that is Vb -Va = -integral from a...

But shouldn't there be a resistance necessarily between A and B due to current flowing from A to B?

PROBLEM- http://ijso2013.hbcse.tifr.res.in/files/qna/theory-2008.pdf questions 1-10 to 1-12. ATTEMPT AT SOLUTION In the first question, I am unable to understand how the current in AB is equal to 0.2A when the resistance of AB is 0(galvanometer is ideal). As current is equal to V/R, it would...

Because (x-a)(x-b)(x-c) will be 0 at the values ie a,b,c so remainder at each of these values will be p(a),p(b),p(c) ie a,b,c. So, eg if we take a we get pa^2 + qa + r = a , ie pa^2 +a(q-1) + r = 0 . In all a,b,c we get same expression. So I think that means a , b ,c will be roots of px^2 +...

Homework Statement If a , b, c are distinct and p(x) is a polynomial in x which leaves remainders a,b,c on division by (x-a),(x-b),(x-c) respectively. Then the remainder on division of p(x) by(x-a)(x-b)(x-c) is Homework Equations As it is given that p(x) gives remainder a when divided by...

The coulombic force in free space is k.q1.q2/r^2. In a medium, the value of k changes to k/dielectric constant. Now try to solve the question. :D Hint : Compare the 2 values of electrostatic force.

On a banked track, I think that the horizontal component of the weight of the car will act as the centripetal force. I think that when the wheels of the car are turned the force which pushes the car will tend to make the wheels skid and so maybe the friction will act in the center to prevent the...

Can you please explain a bit more. What type of friction is this? i know only 2 types of friction -static and dynamic...

Homework Statement Why does friction act towards the center when a car does uniform circular motion by itself. The Attempt at a Solution I know that centripetal force is needed to move an object in a centre and so there should be a force acting towards the center in the circular...