1 answer:
B. the distance the star is from Earth
Explanation:
The apparent magnitude of star is a function of its distance from the earth. It is one of the physical properties that is used to study a star.
The apparent magnitude of a star or other astronomical bodies is a measure of their brightness as seen from a location on the earth.
The apparent magnitude of a star depends on:
- Distance of the star from the location on earth.
- luminosity of the star
- the particles along the part of the star and earth that cuts off the light the earth receives.
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Answer:
10 W
Explanation:
P = F x v
F = 200N
v = x2 - x1 / t
= 6 - 3 / 60
= 3 / 60
= 1 / 20
= 0.05 m/s
P = 200 x 1/20
= 10 W
