0.078 times the orbital radius r of the earth around our sun is the exoplanet's orbital radius around its sun.
Answer: Option B
<u>Explanation:</u>
Given that planet is revolving around the earth so from the statement of centrifugal force, we know that any
The orbit’s period is given by,
Where,
= Earth’s period
= planet’s period
= sun’s mass
= earth’s radius
Now,
As, planet mass is equal to 0.7 times the sun mass, so
Taking the ratios of both equation, we get,
Given and
The Moon s escape speed will be smaller than Earth's.
The minimum speed that is required for an object to free itself from the gravitational force exerted by a massive object.
The formula of escape speed is
where
v is escape velocity
G is universal gravitational constant
M is mass of the body to be escaped from
r is distance from the center of the mass
we can say that,
Escape speed depends on the gravity of the object trying to hold the spacecraft from escaping.
we know that,
The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second.
since, v ∝ g
The Moon s escape speed will be smaller than Earth's.
Learn more about escape speed here:
<u>brainly.com/question/15318861</u>
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If the small and big stones are dropped from the roof of a house simultaneously, both stones will reach the ground at the same time due to the effect of gravity.
No matter how much is the mass of an object the gravity will attract it to the earth center with an acceleration of 32,17 ft/s2
<h3>What is gravity?</h3>
In physics, gravity is the force of attraction that the earth exerts on all bodies possessing mass by pulling them toward its center.
Learn more about gravity at: brainly.com/question/557206
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Answer:
There is a localization of negative charge near the door handle.
If it is a matter of which way you are going you could lean forward. It would help to put all the weight opposite of where you are falling.