In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. The correct option is option A.
<h3>
What is atom?</h3>
Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
Quarks are present in protons and neutrons but not in electrons. Quarks are sub-atomic particles that have mass, but not an integer of charge.
Therefore, the correct option is option A.
To know more about atom, here:
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Answer:
![M_{2}O](https://tex.z-dn.net/?f=M_%7B2%7DO)
Explanation:
Anything oxide is a compound with oxygen, and since oxygen is -2, it requires two of the metal's +1 to make it zero
In other words:
2(+1) + (-1) = 0
Hi!
The answer is 8 m/s^2
<h3>Explanation:</h3>
Acceleration is defined as the rate of change of an object's velocity, per unit time. Meaning, the rate at which an object is increasing/decreasing its velocity with the passage of time in a given period.
If an object is moving at constant velocity, its acceleration would be 0, because there is no change in velocity. In our case, the velocity is increasing, and to calculate this, we will use a simple formula,
acceleration = change in velocity / time
and change in velocity is calculated by subtracting the value of initial velocity (u) from final velocity (v).
<h3>Our known values are:</h3>
u = 7m/s
v = 15m/s
t= 1s
a = ?
<h3>Putting the values in the equation for acceleration:</h3>
a = u - v / t
a = 15 - 7 / 1
<u>a = 8 m/s^2</u>
Hope this helps!