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Mekhanik [1.2K]
3 years ago
7

Why is the solar system commonly represented as a scale model?

Physics
1 answer:
topjm [15]3 years ago
6 0
The actual size of the Solar system is too big to show without making a much smaller model. If someone wants to see the orientation of the planets a model has to be made so we can see it without flying out too space.
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A man stands on a platform that is rotating at 3.8 rpm; his arms are outstretched and he holds a brick in each hand. The rotatio
Ierofanga [76]

Answer:

a) 5.197rev/s

b) Kf/Ki =2.28

Explanation:

a) Angular momentum of the system L = Iw

ButLi=Lf

Kiwi =Ifwf

wf = (Ii/If)will = (4.65/3.4)×3.8=5.197rev/s

b)Kinetic energy KE= 0.5Iw^2

Ki = 0.5Iiwi^2

Kf=0.5Ifwf^2

Kf/Ki = Ifwf/Iiwi

Kf/Ki = (4.65/3.4))(5.197/3.8)

Kf/Ki = 1.22(1.368)^2

Kf/Ki = 2.28

8 0
3 years ago
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Q12. How much force is applied on the body when 150 joule of work
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Force = Work/distance

Force = 150/10

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is done in displacing the body through a distance of 10m in the  direction of the force.

4 0
2 years ago
Valency of oxygen is two. why??​
AlexFokin [52]

Answer:

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Answer:

the ionosphere

.......................................................

8 0
2 years ago
A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 10-27
Step2247 [10]
For the answer to the question above asking to d<span>etermine the density of the proton. 
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I hope my answer helped you. Feel free to ask more questions. Have a nice day!
8 0
3 years ago
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