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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 the Sun during the day and the stars and Moon during the night. Otherwise, the rotation is not noticeable. However, there is one common […]

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Plus Two Physics

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 of an atom consists of neutral neutrons and positively charged protrons… then why do protons not attract neutrons and share charges with them? […]

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interesting question Interesting Questions

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 OF DARKNESS????….”   Asked  Taoqeer Nezam Related articles Cosmological Mysteries Needing Answers(gregbentall.com)

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Plus Two Physics

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 surface of earth which are unbound will be thrown eastwards tangentially with the speed of rotation of earth. Read more at: http://www.astronomycafe.net/qadir/q1168.html http://www.universetoday.com/66570/what-would-happen-if-the-earth-stopped-spinning/

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CBSE Communication Systems Electromagnetic Waves

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.  

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Plus Two Physics

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 rays are reaching earth from sun at the time of eclipse. But actually it is less at the time of eclipse as […]

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Ask Physics Helicopter Interesting Questions KINEMATICS kinematics problem Project relative position still time interval

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 […]