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nataly862011 [7]
4 years ago
8

I need to learn some interesting facts, any smart people out here?

Physics
2 answers:
Alex17521 [72]4 years ago
5 0

Question: Whats the earths core made of ?

Answer: The outer core is about 1,400 miles thick and is made of iron and nickel, along with small amounts of other dense elements  they have a lot of diffrent pieces that make up the core but this is also found on top of the erths surface

Explanation: so earths core is fascinating to scientest it has so many objects and metals making up the core

question answered by

(jacemorris04)

Paha777 [63]4 years ago
3 0
The U.S has had 45 presidents and 2 have been impeached.

Also the biggest country in the world is Russia and the smallest is Vatican City
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3 years ago
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Why would you expect the speed of light to be slightly less in the atmosphere then in a vacuum?
azamat

The speed of light to be slightly less in atmosphere then in vacuum because of absorption and re-emission of light by the atmospheric molecules occurred when light travels through a material

<u>Explanation:</u>

When light passes through atmosphere, it interacts or transmits through the transparent molecules in atmosphere. In this process of transmission through atmosphere, the light will be getting absorbed by them and some will get re-emitted or refracted depending upon wavelength.

But in vacuum the absence of any kind of particles will lead to no interaction and no energy loss, thus the speed of the light will be same in vacuum while due to interactions with molecules of atmosphere, there speed will be slightly less compared to in vacuum.

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3 years ago
If you do 1500 J of work hoisting a 20 kg bale of hay , to what height did you lift it
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