# Recent questions in Physics

## 1

Answers#### How to calculate relative humidity?

how to calculate the relative humidity when given readings on the graph

15/05/2017
## 0

Answers#### YOU ARE REQUIRED TO DESIGN AN AUTOMOBILE BATTERY JUMPER CABLE THAT HAS LOW RESISTANCE. IN VIEW OF AN EQUATION, EXPLAIN THE FACTORS YOU WOULD CONSIDER IN YOUR DESIGN.

YOU ARE REQUIRED TO DESIGN AN AUTOMOBILE BATTERY JUMPER CABLE THAT HAS LOW RESISTANCE. IN VIEW OF AN EQUATION, EXPLAIN THE FACTORS YOU WOULD CONSIDER IN YOUR DESIGN.

12/05/2017
## 0

Answers#### I am doing my project in PVA+NH4SCN related polymer electrolytes. I need some Reference Journal (pdf) related to that. My topic is based on " 1H proton conducting polymer electrolyte system". Please friends send pdf to my mail.

Hi, I am doing my project in PVA+NH4SCN related polymer electrolytes. I need some Reference Journal (pdf) related to that. My topic is based on " 1H proton conducting polymer electrolyte ...

10/05/2017
## 1

Answers#### Three balls are thrown in to the air simultaneously. What is the acceleration of their centre of mass while they are in motion?

Three balls are thrown in to the air simultaneously. What is the acceleration of their centre of mass while they are in motion?

09/05/2017
## 2

Answers#### 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

Answers#### 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?

## 0

Answers#### 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

Answers#### 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

Answers#### 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

Answers#### 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