Explanation:
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The earth remains in orbit around the sun due to the force of gravity. How does the force of gravity exerted by the sun on the e
2 answers:
Answer:
The force remains same.
Explanation:
Let the mass of sun is M and the mass of earth is m. The distance between them is d.
According to the Newton's law of gravitation, the force between the two bodies is directly proportional to the product of their masses and inversely proportional to the square of distance between them.
Thus, the force exerted by the sun on earth is equal to the force exerted by the earth on sun are same which is given by
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Answer:
Speed:
Wavelength:
Frequency:
Explanation:
The speed of the laser as it travels through polystyrene can be determine by means of the equation of the refraction index:
(1)
Where c is the speed of light and v is the speed of the laser in the medium.
Therefore, v will be isolated from equation 1
Hence, the speed of the laser has a value of
Frenquency:
Since, wavelength is the only one who depends on the media. Therefore the frequency in both medium will be the same.
To determine the frequency it can be used the following equation
(2)
Where c is the speed of light, is the frequency and
is the wavelength
Then, wil be isolated from equation 2.
(3)
Before using equation 3 it is necessary to express in units of meters.
⇒
Hence, the frequency of the laser has a value of
Wavelength:
To determine the wavelength it can be used:
Where v is the speed of the laser through the polystyrene.
Hence, the wavelength of the laser has a value of
