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saw5 [17]
3 years ago
8

According to the law of universal gravitation, any two objects are attracted to each other. The strength of the gravitational fo

rce depends on the masses of the objects and their distance from each other. Many stars have planets around them. If there were no gravity attracting a planet to its star, the planet's motion would carry it away from the star. However, when this motion is balanced by the gravitational attraction to the star, the planet orbits the star. Two solar systems each have a planet the same distance from the star. The planets have the same mass, but Planet A orbits a more massive star than Planet B. Which of the following statements is true about the planets? A. Planet B is more attracted to its star than Planet A. B. Planet A has a longer year than Planet B. C. Planet A orbits its star faster than Planet B. D. Planet B will keep orbiting its star longer than Planet A.
Chemistry
2 answers:
Artist 52 [7]3 years ago
5 0

Answer:

C. Planet A orbits its star faster than Planet B.

Explanation:

The force of gravitational attraction depends on the masses of the bodies involved. The greater the mass, the greater the force of attraction between them.

Based on this, we can say that the gravitational force between planet A and the star it orbits is stronger than planet B and its star. That's because the star of planet A has a greater mass than the star of planet B.

Since the gravitational force between planet A and its star is greater than the gravitational force between planet B and its star, we can say that planet A will orbit its star faster than planet B will orbit its star.

Alika [10]3 years ago
4 0
The answer is C. Because planet A experiences a stronger gravitational field, it will have a larger acceleration due to gravity, and therefor orbit faster than planet B
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Complete combustion of 7.50 g of a hydrocarbon produced 23.1 g of CO2 and 10.6 g of H2O. What is the empirical formula for the h
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A CH compound is combusted to produce CO2 and H2O 
CnHm + O2 -----> CO2 + H2O 
Mass of CO2 = 23.1g
 Mass of H2O = 10.6g
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 For Carbon C, divide by molecular weight of CO2 and multiply with Carbon
molecular weight. So C in grams = 23.1 x (12.01 / 44.01) = 6.3 g C
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= 1.18 of H
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 6.3 grams of C x (1 mole/12.01 g C) = 0.524 moles of C
 1.18 grams of H x (1 mole/1.008 g H) = 1.17 moles of H
 Divides by both mole entities with smallest
 C = 0.524 / 0.524 = 1 x 4 = 4
 H = 1.17 / 0.524 = 2.23 x 4 = 10
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7 0
3 years ago
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In a reaction, chlorine accepts an electron to form Cl-. What is true about the atomic size of the chlorine ion?
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Answer is: The atomic size of the chlorine ion is larger than the size of the chlorine atom.

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If Marie and Calvin dissolve 50 grams of KBr in 100 grams of water at 90oC, the solution is
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