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Sholpan [36]
3 years ago
7

Johannes Kepler is known for which discovery in astronomy?

Physics
2 answers:
makvit [3.9K]3 years ago
4 0

Answer:

Johannes Kepler discovered the planetary laws of motion.

Gennadij [26K]3 years ago
3 0

Answer:

Determining planetary laws of motion

Explanation

Kepler worked for Tycho Brahe who was recording planetary motion for 20 years. After Brahe's demise Kepler inherited those records of planetary motion. After analyzing those records he put forth the three laws of planetary motion.

<u>Law of Orbits</u>: Every planet in our solar system move in elliptical orbit with sun at one focus It is also called the law of Ellipses

<u>Law of Areas</u>: The imaginary line drawn between the planet and sun will sweep out equal areas in equal period

<u>Law of periods</u>: The square of the time period of the planet is directly proportional to the cube of the semi major axis of the orbit. It is also called the law of Harmonies

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3 0
2 years ago
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sergey [27]

Answer: 53.09Hz

Explanation:

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Where:

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L= Length of the string (cm)

μ= Linear density or mass per unit length of the string in cm/gm

√T/μ= square root of T divided by μ

It is important to note:

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F1= 1/2(376cm)(0.01/1) × (√574/(0.036g/cm)(0.1kg/m÷1g/cm)

F1= 0.1329 × 399.30

= 53.09Hz

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3 years ago
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