# Recent questions in Physics

## 2

#### A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?

A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?
14/04/2017

## 0

#### A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?

A ball is thrown in such a way that it does not spin about its own axis. Does this mean that the angular momentum is zero about an arbitrary origin?
14/04/2017

## 0

#### K.p method

I need a proof for K.p method, especially I want to calculate kane parameters foe deriving effective mass. I dont know how to calculate the matrix element.
14/04/2017

## 1

#### A square plate of copper with 50.0 cm sides has no net charge and is placed in a region of uniform electric field of 80.0 kN/C directed perpendicularly to the plate. Find (a) the charge density of each face of the plate and (b) the total charge on each face.

A square plate of copper with 50.0 cm sides has no net charge and is placed in a region of uniform electric field of 80.0 kN/C directed perpendicularly to the plate. Find (a) the charge density of ...
26/03/2017

## 1

#### A solid sphere of radius 40.0 cm has a total positive charge of 26.0 uC uniformly distributed throughout its volume. Calculate the magnitude of the electric field (a) 0 cm, (b) 10.0 cm, (c) 40.0 cm and (d) 60.0 cm from the center of the sphere.

A solid sphere of radius 40.0 cm has a total positive charge of 26.0 uC uniformly distributed throughout its volume. Calculate the magnitude of the electric field (a) 0 cm, (b) 10.0 cm, (c) 40.0 cm...
26/03/2017

## 1

#### Explain why the electric flux through a closed surface with a given enclosed charge is independent of the size or shape of the surface.

Explain why the electric flux through a closed surface with a given enclosed charge is independent of the size or shape of the surface.
22/03/2017

## 0

#### Explain the differences between linear, surface and volume charge densities and give examples of when each would be used.

Explain the differences between linear, surface and volume charge densities and give examples of when each would be used.
22/03/2017

## 1

#### Which particular oil do we use to make the x-ray tube cool??

which particular oil do we use to make the x-ray tube cool??
20/03/2017

## 1

#### How to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.

how to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.
24/02/2017