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# Category Archives: Mechanics

## Examples of scalar product and vector product

“will you give me min 10 examples 0f scalar product and vector product known at xii level”

I am just strating the list; members please contribute more as comments

Scalar Product

1. work F.s
2. Power F.v
3. Potential energy of a dipole P.E

Vector Product

1. Torque on a dipole = PxE
2. Lorentz magnetic force F=qvxB
3. Torque =rxF

## Learn Integral Calculus from Scratch

“Where can I learn integration fundamentals”

Just find below one of the best choice for you.

http://www.intmath.com/integration/integration-intro.php

Visit http://www.intmath.com/ for learning the fundamentals of Mathematics

## Stone falling in a well

“what is the distance a rock will fall in 5 seconds inside a well bore?”

Ans:

Using

$S=ut+\frac{1}{2}at^{2}$
and taking u = 0 (if falling from rest)
and g= 10 m/s2

S= 125 m