Amarble with a mass of 1.5 grams rolls at a constant rate of 0.50 cm/s across a table. what is the magnitude of the marble's momentum?

7.5×10⁻⁶ kg m/s

Explanation:

The momentum of a body is given by the product its mass and velocity with which the object is moving.

P = m v

where m is the mass and v is the velocity

It is given that:

The mass of the marble is m = 1.5 g = 0.0015 kg

The velocity of the marble is v = 0.50 cm/s = 0.005 m/s

P = 0.0015 kg×0.005 m/s = 7.5×10⁻⁶ kg m/s

Thus, the magnitude of the marble's momentum

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.