Properties of electromagnetic radiation and photons. ... we find the types of energy that are lower in frequency ( and thus longer in wavelength) than visible light. Seeee
Answer:
Both the pressure and temperature increase with depth inside the Earth.
Explanation:
The core of the Earth is as hot as the surface of the Sun. The temperature decreases as the distance from the core increases towards the surface of the Earth. The pressure also increases with the depth, though this is not a linear increase with depth. Refer below for variation of pressure with depth inside the Earth.
The gravitational force between the Earth and the Moon is
Explanation:
The gravitational force between two objects is given by:
where
:
is the gravitational constant
m1, m2 are the masses of the two objects
r is the separation between them objects
In this problem, we are given:
(mass of the Moon)
(mass of the Earth)
(distance between Earth and Moon)
Substituting into the formula, we find the force:
Learn more about gravitational force:
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Answer:
I think it should be D
Explanation:
This is because the arrow pointing right is bigger than the arrow pointing left. Hence we can conclude the the force acting on the right is greater and hence it is accelerating
Answer:
C)Earth's orbital speed is greater when it is closer to the Sun than when it is farther from the Sun.
Explanation:
We can use Kepler's 2nd law or the law of area to answer this question.
The law states that the rate of area swept out by a planet's orbit is same throughout the orbit. For the farthest point since the distance is large as compared to to the nearest point, the possibility that area swept is large. Hence, to compensate the extra swept area. the orbital speed has to decrease at the largest point.
Hence, planet's speed is greater when it is closer to sun than the speed when it is farther.