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weeeeeb [17]
3 years ago
8

What is the structure of our galaxy? Plz help

Physics
1 answer:
Klio2033 [76]3 years ago
6 0
It’s a loose spherical structure which is located around the bulge and some of the disk
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F = ma

F = (3)(900)

F = 2700 N

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3 years ago
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A 2000 kg roller coaster is at the top of a loop with a radius of 24 m. If its speed is 18 m/s at this point, what force does it
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Answer:

46620\ \text{N}

Explanation:

m = Mass of roller coaster = 2000 kg

r = Radius of loop = 24 m

v = Velocity of roller coaster = 18 m/s

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

Normal force at the point will be

N-mg=\dfrac{mv^2}{r}\\\Rightarrow N=\dfrac{mv^2}{r}+mg\\\Rightarrow N=\dfrac{2000\times 18^2}{24}+2000\times 9.81\\\Rightarrow N=46620\ \text{N}

The force exerted on the track is 46620\ \text{N}.

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3 years ago
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Len [333]

Answer:

d=5\ g/cm^3

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Given that,

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Volume of the object, V = 20 cm³

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d=\dfrac{m}{V}\\\\d=\dfrac{100\ g}{20\ cm^3}\\\\d=5\ g/cm^3

So, the density of the object is equal to 5\ g/cm^3.

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