Answer Posted / sanju

The atmosphere is present upon about 200 miles above the
surface of the earth. The density of the lower layer is
greater, because it is compressed by the weight of the
layers above it. Hence it gradually increases as we move
downwards. When a ray from a star enters the atmosphere and
travels downwards, it passes from the rare to denser layers
and so bends towards the normal more and more. Finally, it
enters the eye and appears to come from the farther distance.

Explain nuclear fusion?

1070

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What is the pitch?

1061

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Explain the difference between intrinsic and extrinsic semiconductors?

993

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Consider earth's equator is covered with a measuring tape touching the ground such both the ends touch each other. if the tape is lifted 1 meter from the ground, what would be the distance between two ends of tape?

2068

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I want to prepare a frequency generator. the specifications i.e. output requirements are 12V, 1-10A & frequency upto 1K to 5K. Please, inform me with proper circuit dig. & the component values.

2092

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what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?

2190

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What are the steps to the scientific notation?

1039

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What is frequncy?

1146

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Explain the difference between emission and absorption line spectra. : quantum physics

975

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Tell me how are amps and watts related?

1000

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Difference between intrinsic and extrinsic semiconductors?

1051

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Explain the Use of manometer.

1050

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What large machine, which came on line in the summer of 2000 at the department of energys brookhaven national lab, is the world's highest energy ion collider:

997

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When gravity is the only force acting on an object the object is in what?

1193

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Explain how many more times louder is 70 decibels than 10 decibels?

962

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