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# Tag Archives: Draft

## A Numerical from Kinematics

an aeroplane flies 400km due west from city A to city B,then 300km north east to city C,and finally 100km north to city D. how far is it from city A to D?in what direction must the aeroplane had to return directly to city A from city D?

## magnetic field

Which one we should use Bio saverts law or amperes law to find a magnetic field?

chirag

Both are used to find the magnetic field .In the case  of physical magnet Biot-Savarts law can be used

In the case of a current carrying conductor Ampers circuital law is used

## Average Speed

“A car travels from A to B with a speed of 30km/h and returns back to A with a speed of 50km/h.Find distance,displacement,average speed and average velocity ifdistance between A and B is 100km.”

Distance 200 m

Displacement 0

Average velocity 0

Average speed =$\frac{2v_{1}v_{2}}{v_{1}+v_{2}}$ = 37.5 kmph

## Matter from energy !

How can we can transform energy into matter? I know x rays can collide to form leptons but how to create protons and neutrons from photons?

Answer will be posted soon. Members and visitors are always welcome to post their answers as comments.

## A Physics Problem from Projectile Motion and Laws of Motion

A fish launches himself from a 6 cm cannon straight up in the sir. When he leaves the cannon he is traveling at 6.5 m/s. assume constant acc while in the cannon.
~What acceleration did the cannon apply to the fish?
~How long was he in the cannon?
~Once the fish is flying upwards, what is his acceleration?
~once he left the cannon, how high did he travel in the air?

The fish can hold his breath for 1.2 s out of water. Assuming that while in the cannon the fish is underwater  and once launched he is immediately in the air
~How long until he splashes back down into the water?
~What was the fish’s velocity  when he splashed back into the water?

LEFT FOR MEMBERS AND VISITORS TO ANSWER

## Projectile motion – A problem from real life situation

Three identical stones are thrown with the same initial speed from the top of a cliff into the river below. atone 1 is launched at an angle of 20 degrees above the horizontal; stone 2 at an angle 20 degrees below the horizontal; and stone 3 directly along the horizontal. just before entering the river, which stone has the greatest speed?

## IIT Kanpur : Previous Question Papers of JAM for MSc

Previous years Question Papers of JAM

 Paper Name 2005 2006 2007 2008 BT BT BT BT BT CA CA CA CA CA CH CH CH CH CY GG GG GG GG GG GP GP GP GP GP MA MA MA MA MA MS MS MS MS MS PH PH PH PH PH

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AISSCE / AISSE 2020February 26, 2020
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