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3 years ago

A major contribution of Johannes Kepler to the development of modern astronomy was:________.

Physics

1 answer:

fgiga [73]3 years ago

8 0

Answer:

<h2>The answer is planetary motion</h2>

Explanation:

According to Johannes Kepler, the laws governing planetary motion

states that:

1. The orbit of a planet is an ellipse with the Sun at one of the two foci.

2. A line segment joining a planet and the Sun sweeps out equal areas

during equal intervals of time.

3. The square of a planet's orbital period is proportional to the cube of the semi-major of its orbit.

Johannes Kepler was a German astronomer, mathematician, and astrologer

Born: 27 December 1571, Weil der Stadt, Germany

Died: 15 November 1630

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WITCHER [35]

Answer:

Wavelength=75 cm.

The wavelength well remain unchanged which is 75 cm.

Explanation:

The formula which will help us to answer the question is:

V=f*λ

Where:

V is the velocity

f is the frequency of wave

λ is the wave length

Now:

λ=V/f Eq (1)

The equation show's that wavelength is independent of the amplitude but it depends on the frequency and the velocity with which wave is moving.

The wavelength well remain unchanged which is 75 cm.

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Answer:

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Explanation:

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Or $E=\dfrac{hc}{\lambda}$

c = speed of light

$\lambda$ = wavelength of photon

From the above equation, it is clear that the energy of photon is directly proportional to its frequency.

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3 years ago

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raketka [301]

Answer:

The answer is the 3rd option!

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