Explanation:
The nucleus of an atom is dense because it contains more of particles in a very little space.
The nucleus is the center of an atom made up of the protons and neutrons.
Atomic nucleus is very small compared to the size of the atom.
Density is function of mass and volume.
Mass is the amount of matter in a substance.
Volume is the space occupied by a substance.
The more the mass the more the density.
Since protons and neutron are massive bodies occupying a small space, they make the nucleus very dense.
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Answer:
Since there is attraction force between two charges so the other charge must be - 3C
Explanation:
As we know that the force between two charges is given by formula

here we know that

also we know that

r = 8 cm
now we have

so we have

Answer:
conserved
Explanation:
During this process the energy is conserved
Answer:
The fallen defenders became heroes to the cause of Texan independence.
Explanation:
Neutron is commonly used to initiate a fission chain reaction.