What would happen to temperature on the Earth If the Sun’s heat were not distributed throughout the atmosphere?

Physics

1 answer:

anzhelika [568]3 years ago

6 0

It would be hotter near the Earth's equator and colder near Earth's poles.

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in the diagram the solid eventually becomes a gas what will happen to bring the substance from a solid to a gas

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Since there is no diagram I can see to prove my answer, I must infer that a heat source should be applied to the solid substance and cause the atoms in the solid to spread further apart and become a different state, in which atoms will be able to freely move, gas.

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3 years ago

Convert 25 cm to km using the method of dimensional analysis

pogonyaev

25 x 10^-5
= 0.00025

25 cm
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A brick and a feather fall to the earth at their respective terminal velocities. Which objectexperiences the greater force of ai

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Answer:

Under the reasonable assumption that the brick has more mass than the feather, the brick experiences a greater force of air friction.

Explanation:

Objects at terminal velocity, only under the influence of gravity, have maximized their speed and have an acceleration of zero. Thus, neither object is accelerating.

Recall Newton's second law: $\sum {\vec {F}}=m \vec {a}$

Since acceleration for each object is zero, the sum of the force acting on each of those objects must also be zero.

Since the only forces acting on the objects are gravity and the force of air friction, in order to zero out, the force of air friction must be equal in magnitude and opposite in direction to the force of gravity.

Recall that near the surface of the earth, $F_{gravity}=mg$ , so the Force of Gravity acting on an object is directly proportional to the object's mass. (A similar argument could be made even if this were not taking place on the surface of the earth, so long as the objects were the same distance from the object providing gravitational influence).

If the masses of the objects are different, the object with the greater mass will experience a larger force of gravity, and hence a larger force of air friction at terminal velocity.

Under the reasonable assumption that the brick has more mass than the feather, the brick experiences a greater force of air friction.

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Answer:

Explanation:

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3 years ago

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