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max2010maxim [7]
3 years ago
10

Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 8 AU, and it takes 71

0 Earth days for Planet A to orbit the star. If it takes 1170 Earth days for Planet B to complete an orbit, what is the average distance from Planet B to the star? AU
Physics
1 answer:
Mama L [17]3 years ago
5 0

Answer: 11.2 AU

Explanation:

Applying Kepler's 3rd law, we can find out the average distance of planet B to the star.

This Law states that for planets orbiting a same star, there exists a fixed relationship between the average distance to  the star, and the period of his orbit  around it, as follows:

K = T² / d³

So , in this case, we can write:

(da)³ / Ta² = (db)³ / (Tb)²

Solving for db:

db = ∛8³.(1170)² / 710² = ∛1390.4 = 11.2 AU

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3 years ago
An element is highly conductive, highly reactive, soft, and lustrous. The element most likely belongs to which group?(1 point)
UkoKoshka [18]

An element which is highly conductive, highly reactive, soft, and lustrous is most likely an alkali metal.

Alkali metals are in group 1 of the Periodic table which means that they have only a single valence electron.

This causes them to be soft and highly reactive because:

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Examples of alkali electrons include:

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In conclusion therefore, alkali metals are highly reactive and soft and so the element described above is most likely an alkali metal.

<em>Find out more at brainly.com/question/18722874.</em>

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<u>We are given:</u>

Mass of the rocket = 10 kg

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