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agasfer [191]
3 years ago
7

HELP WILL MEDAL !!!!!!!!!!!!!!!!!!!

Physics
2 answers:
UkoKoshka [18]3 years ago
8 0
The speed of light in a vaccum is 182,282 miles per second. Light travels through space over a period of time to reach the earth. When a new star becomes visible it means that a star's light has finnaly reached us. It takes the sun's light an average of 8 minutes and 20 seconds to reach earth. Hope this helps.
Katarina [22]3 years ago
7 0
I think this is the best way to explain it
light from the sun takes 8 minutes and 20 seconds to travel to Earth. So it would be the same if the Earth's light to travel to the sun. The sun is described to be a star.
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According to Newtons second law of motion, which is equal to the acceleration of an object?A: net force + massB: net force x mas
Assoli18 [71]

D: net force divides mass

Application of F = ma.

5 0
3 years ago
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A child is riding a merry-go-round that is turning at 7.18 rpm. If the child is standing 4.65 m from the center of the merry-go-
iVinArrow [24]

Answer:

B) 3.50 m/s

Explanation:

The linear velocity in a circular motion is defined as:

v=\omega r(1)

The angular frequency (\omega) is defined as 2π times the frequency and r is the radius, that is, the distance from the center of the circular motion.

\omega=2\pi f(2)

Replacing (2) in (1):

v=2\pi fr

We have to convert the frequency to Hz:

7.18rpm*\frac{1Hz}{60rpm}=0.12Hz

Finally, we calculate how fast is the child moving:

v=2\pi(0.12Hz)(4.65m)\\v=3.5\frac{m}{s}

3 0
3 years ago
A box of mass 12 kg is at rest on a flat floor. The coefficient of static friction between the box and floor is 0.42. What is th
vladimir2022 [97]

As we know that friction force on box is given by

F_s = \mu_s N

here we know that

N = mg

here we have

m = 12 kg

\mu_s = 0.42

so now we have

N = 12(9.8) = 117.6 N

now we will have

F_s = 0.42(12)(9.8)

F_s = 49.4 N

so it required minimum 49 N(approx) force to move the block

5 0
4 years ago
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The sun heats different parts of the land differently, leading to uneven heating. What does this cause?
neonofarm [45]
It causes the global pattern of wind and precipitation (such as rain, snow, or hail).
3 0
3 years ago
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How do we use rock and mineral resources daily?
nikitadnepr [17]
Well minerals are in the water we drink every Day, even the food we eat. Minerals are contained in rocks so there for both are important to life
4 0
3 years ago
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