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dlinn [17]
3 years ago
8

Particles of atoms

Physics
1 answer:
vredina [299]3 years ago
3 0
Answer:

Protons , neutrons and elections
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Weather is the conditions (temperature, wind etc.) at a given time, like on that day. Climate, which is what his data would show, is the conditions over an extended period of time like the 3 months he collected data

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Which two pieces of evidence most directky support the idea that all matter in the universe began as a sibgke point of energy.
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YOUR ANSWER IS GIVEN BELOW:

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The abundance of helium in the universe and the redshift of light from the galaxies.

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What is the relationship between the valence electrons of an atom and the chemical bonds the atom can form?​
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What is the centripetal force that would be required to keep a 4.0 kg mass moving in a horizontal circle with a radius of 0.80 m
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Answer:

D. 1.8 × 102 newtons radially inward

Explanation:

The magnitude of the centripetal force is given by:

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F=(4.0 kg)\frac{(6.0 m/s)^2}{0.80 m}=180 N

The centripetal force is the force that keeps the object in a circular trajectory, so it is a force that is always directed inward (towards the centre of the circular path) and radially. Therefore, the correct answer is

D. 1.8 × 102 newtons radially inward

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