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telo118 [61]
1 year ago
12

A student wants to draw a model of an atom. Which statement describes how to find the number of neutrons to include in the model

?(1 point)
Responses

Add the atomic number and the mass number.
Add the atomic number and the mass number.

Subtract the number of electrons from the number of protons.
Subtract the number of electrons from the number of protons.

Subtract the atomic number from the mass number.
Subtract the atomic number from the mass number.

Add the number of electrons to the number of protons.
Add the number of electrons to the number of protons.
Physics
1 answer:
Lesechka [4]1 year ago
5 0

Answer:

Subtract the atomic number from the mass number

Explanation:

The number of neurons in an atom is equal to the difference between the atomic number and the mass number

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Answer:

Boiling Point

Explanation:

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A 50.0 kg object rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and
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Answer:

f=140\ N

Explanation:

Given:

  • mass of the object on a horizontal surface, m=50\ kg
  • coefficient of static friction, \mu_s=0.3
  • coefficient of kinetic friction, \mu_k=0.2
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<u>Now the value of limiting frictional force offered by the contact surface tending to have a relative motion under the effect of force:</u>

F_s=\mu_s.N

where:

N= normal force of reaction acting on the body= weight of the body

F_s=0.3\times (50\times 9.8)

F_s=147\ N

As we know that the frictional force acting on the body is always in the opposite direction:

So, the frictional force will not be at its maximum and will be equal in magnitude to the applied external force and hence the body will not move.

so, the frictional force will be:

f=140\ N

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3 years ago
Relation of Kilometre and mile​
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