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Tag: earth

Posted on February 2, 2015February 2, 2015

The Coriolis force and a bit of equatorial flimflam

Got by Mail from Jearl Walker

************************************

You have spent a lifetime on a rotating planet but the only frequent and obvious clues about the rotation are the apparent motion of read more

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Posted on March 6, 2013

Questions received via “Ask a Question” section

How to make a radio? Asked Amritansh prasad

How many time constant will be elapsed before the power delivered to the battery drops to half of its maximum value? Asked Mrityunjoy

Nucleus read more

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Posted on June 30, 2012

SPEED OF DARKNESS?

IN PHYSICS I OFTEN GET STRUCK OF A QUESTION OF NOT A SINGLE TEACHER OR MY FRIENDS COULD ANSWER ME THE QUESTION IS THAT

“IF SPEED OF LIGHT IS 3 x 108 METRE PER SEC, THAN WHAT IS THE SPEED read more

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Posted on November 1, 2011November 1, 2011

What would happen if the Earth stopped rotating?

The speed of an object on earth’s surface near equator is approximately is 1670 kilometers/hour. So, if the earth stops rotating suddenly,  the objects on the read more

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Posted on October 21, 2011October 21, 2011

Height of Antenna and range of transmission

A TV Tower has a height h. Derive expression for the maximum distance upto which signals can be received on earth.

height of antenna
Height of Antenna and Range of Transmission

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Posted on September 24, 2011September 24, 2011

Eating food during Eclipse

I heard that we ought not eat anything in eclipse hours. Is there any scientific reason for that?

Tejaswini  asked

Answer:

There is no scientific reason behind it. Earlier it was thought that more harmful read more

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Posted on September 10, 2011

Relative position of a helicopter

If a helicopter takes off from a point on earth.(at certain altitude) and its still at that point in air.After certain time interval the observer whose position was same as that of helicopter’s take off point will see the helicopter right above him. The question arises is that how it is possible if [...]

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