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Define Grand Lunar Canals (Moscow Phys-Tech)?
In one of his book, H. G. Wells illustrate an encounter of amateur earthling astronauts with a lunar civilization living in very deep caverns beneath the surface of the Moon. The caverns are attached to the surface by long channels filled with air.
The channel is dug among points A and B on the surface of the Moon so that the angle AOB=90o suppose that the air pressure in the middle of a channel is Po = 1 atm. calculate approximately the air pressure in the channel near the surface of the Moon. The radius of the Moon a ≈ 1750. The hastening due to gravity on the surface of the Moon gm≈ g/6 , where g is the hastening due to gravity on the surface of the Earth.
Which is factual of the light from an actual physical object whose image is formed by a single thin lens? Ans: That's what light perform when it leaves a point on an objec
The matter consists of one or more basic substances called elements. An element is a substance whose all atoms are alike. Cohesion between atoms arises atoms because of interaction
Illustrate a labelled diagram of Hertz's experimental set-up to produce electromagnetic waves. Describe the generation of- electromagnetic waves using this set-up.
Q. During lightning, it is safer to sit inside car than in an open ground. Why? The metal body of the car offers electrostatic shielding where the electric field is zero. Thro
A tank is filled up to a height 2H by a liquid and is placed on a platform of height H from the ground .the distance x from the ground where a small hole is punched to get maximum
CAN YOU GIVE SOME EXAMPLE OF FREE FALL ACTIVITIES
An experiment with force and motion Tie a spring clothes peg open by placing one winding of thread about the long ends. Place the clothes peg in the centre of a long table and
A silicon material is subjected to a magnetic field of strength 1000A/m. If the magnetic susceptibility of silicon is -0.3x10-5, calculate its magnetization and magnetic flux densi
how rotational motion was investigate
Ferromagnetic Substance: A substance which behaves as a magnet in presence of a strong magnetic field is known as ferromagnetic substance. E.g. Iron, Nickel
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