How does the solar nebula theory account for the presence of comets?

What will be an ideal response?


Comets are understood to be left over from the origin of the planets.

Physics & Space Science

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The exit velocity is 12 m/s. The inlet velocity of the water is nearest:



(A) 6.31 m/s
(B) 4.32 m/s
(C) 3.95 m/s
(D) 3.24 m/s

Physics & Space Science

A double-convex thin lens is made of glass with an index of refraction of 1.52. The radii of curvature of the faces of the lens are 60 cm and 72 cm. What is the focal length of the lens?

A) 70 cm B) 63 cm C) 75 cm D) 66 cm E) 58 cm

Physics & Space Science

A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. This is governed by the second law of thermodynamics

Indicate whether the statement is true or false

Physics & Space Science

Partially decomposed organic matter in the soil is

What will be an ideal response?

Physics & Space Science