Answer:
True
Explanation:
The wind will exert a force on a body no matter the size of the object
The force on an object due to wind is given by
The unit is Newton
Where,
= Density of air
A = Surface area of object
v = Velocity of air
Hence, it is true that the force of the wind over an area increases as the square of the wind velocity.
Answer:
Check all of them
Explanation:
All are correct.
- stong electrolytes dissolve completely
- weak disolve partially
- nonelectrolytes do not dissolve
cytoplasm
cell membrane
nucleus (unless bacteria)
DNA
mitochondria (unless root hair cell)
Answer:
Protons and neutrons which packed tightly into central core of the atom.
Explanation:
Atoms are composed of three subatomic particle; electron, proton and neutron. Electrons are negatively charged, protons are positively charged whereas neutrons are neutral, hence does not have any charge.
Out of three, protons and neutrons are present in the nucleus of the atom.
Nucleus is the central part of the atom possessing most of the mass of the atom. In the nucleus, protons and neutrons are tightly packed with the help of nuclear force.
Electrons are present around the nucleus also called electron cloud.
Therefore, nucleus are composed of protons and neutrons which packed tightly into central core of the atom
