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pochemuha
3 years ago
7

Is O2 classified as a compound?

Physics
1 answer:
dybincka [34]3 years ago
3 0

Answer: NO.

Explanation: Oxygen is not a compound. It has only one element in it.

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A system is a group of objects that’s analyzed as one unit. Consider a car moving along a road that has a flat section and a hil
vladimir1956 [14]

Answer:

a) Em= K +U,  b) Em= K

Explanation:

The system in this case is formed by the mobilizes and the hill.

Let's write the expressions correctly and completely.

a) When the car moves in the path, the mechanical energy is the siua of the kinetic energy of the car and the potential energy of the car when going up the hill.

              Em = K + U

be) when the car moves in the flat part all the mechanical energy is formed by its kinetic energy that is calculated with the mass and speed of the car

             Em = K

c) When the car goes up the hill the energy the mechanical energy is conserved, but part of the kinetic energy is transformed into potential energy.

8 0
3 years ago
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It does not represent a physical change

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Is velocity related to momentum
enot [183]
Yes
momentum=mass x velocity
or you could rearrange the formula to find velocity = momentum/mass (you get this by dividing both sides in the original equation by mass)
you could also get that mass= momentum/velocity (you get this by rearranging both sides of the original equation by velocity) 
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Are most main sequence stars larger or smaller than the sun?
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Answer: Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive.

3 0
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A truck headed east. Has a initial velocity of 6 m/s it accelerates at 2 m/sfor 12 seconds what is the distance
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If im not mistaken the truck traveled 216 meters. 
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