How asteroids are formed
Explain how asteroids are formed? Describe.
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Due to impact of planets, rocks are fleeing in the space and became asteroid. In some situations the gaseous material and vapor generated in the supernova are coagulated in the space and form the asteroid.
What is Lamberts laws or Lamberts first law, second law and third law: Lambert's laws (J.H. Lambert) Lambert's first l
What is Anthropic principle? Explain Weak anthropic principle and Strong anthropic principle? Q : Difference between the cathode ray and Illustrate the difference between the cathode ray and beta ray?
Illustrate the difference between the cathode ray and beta ray?
Hawking radiation (S.W. Hawking; 1973): The theory which black holes emit radiation similar to any other hot body. The virtual particle-antiparticle pairs are continuously being made in supposedly empty space. Infrequently, a pair wil
What is main difference between secondary electron image and the back scattered electron image? State briefly.
What do you mean by the term nucleus? Describe in brief.
Calculate the hot and cold temperature after 25 orbits. Assume a 100kg spherical spacecraft made of aluminum. Assume that the spacecraft is in an equatorial orbit. How is calculation 1 different for a spacecraft in a 90 degree (polar) orbit?
Candela: The basic SI unit of luminous intensity stated as the luminous intensity in a given direction of a source which emits monochromatic photons of frequency 540 x 1012 Hz and encompasses a radiant intensity in the direction of 1/683 W/
Ehrenfest paradox (Ehernfest, 1909): The special relativistic "paradox" including a fast rotating disc. As any radial segment of the disc is perpendicular to the direction of motion, there must be no length contraction of the radius;
Fermi paradox (E. Fermi): E. Fermi's inference, simplified with the phrase, "Where are they?" questioning that when the Galaxy is filled with intelligent and scientific civilizations, why haven't they come to us hitherto? There are nu
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