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3 years ago

Nitrogen has a atomic mass of 14 and a atomic of number of 7 so the number of neutrons must be ?

Physics

2 answers:

Temka [501]3 years ago

7 0

Answer:

There are 7 neutrons

Explanation:

One way that I remember how to find protons, electrons, and neutrons, is that the protons are equal to the atomic number, the number of electrons is equal to the number of protons, and the neutrons are equal to the atomic mass minus the atomic number.

monitta3 years ago

5 0

THE NUMBER OF NEUTRONS MUST BE 7.

Hope this will help u...

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Answer:

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A box is sliding down an incline tilted at a 11.1° angle above horizontal. The box is initially sliding down the incline at a sp

raketka [301]

Answer:s=0.68 m

Explanation:

Given

Inclination $\theta =11.1^{\circ}$

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deceleration provided by friction=g\sin \theta -\mu _kg\cos \theta [/tex]

Using $v^2-u^2=2as$

Final velocity v=0

$0-1.6^2=2(g\sin \theta -\mu _kg\cos \theta )s$

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3 years ago

You jump off a truck and accelerate toward the surface of the Earth. Does the Earth accelerate toward you?

Triss [41]

When we jump from the truck and accelerate towards the earth surface, the earth also accelerates towards us but it's acceleration is very negligible.

To find the answer, we need to know about the acceleration of earth due to the gravitational attraction.

<h3>What's the gravitational force between the earth and a person?</h3>

Gravitational attraction force is GMm/r² between the earth and a person.
M= mass of the earth

m= mass of the person

r= separation between them.

<h3>What's the acceleration of the earth towards the person when he jumps from a truck?</h3>

According to Newton's second law, Force = M×acceleration
Acceleration= Force / M
Here, Force = GMm/r²,

so acceleration of earth= Gm/r²

As this acceleration is very small, so we can't notice it.

Thus, we can conclude that the earth also accelerates towards us.

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2 years ago

Why are atoms in a covalent bond usually a certain distance away from each other?

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I think it is because the electrons repel each other

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3 years ago

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Answer:

Higher its Energy

Explanation:

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