Explanation :
is silver nitrate. In this compound, one atom of silver, one atom of nitrogen and three atoms of oxygen are present.
We know from the concept of mole concept that the number of molecules, atoms or ions present in a substance is known as one mole.
The number of particles in one mole of a substance is defined as Avogadro's number.
So, we can say that silver, nitrogen and oxygen are present in .
is the changing of the DNA of an organism
Explanation:
In a), no work is done to move horizontally 'across" gravity. In b), he does (m) (g) (h) = (100)(9.8)(1) = 980 joules of work to lift the bag, and then no more work is done by the belt to move both of them horizontally.
From the information given, the mass of the moving body, which in this case is a person, is 72 kg and the momentum 700 kg m/s.
we use the formula p = m × v.
Where p is momentum, m is the mass and v is the velocity.
We need v so we rewrite the equation thus: v = p/m
In our case p = 700 and m = 72
v = p/m → v = 700/ 72 → v = 9.72
Therefore the person is travelling at 9.72 m/s
