Answer:
481.76 J/mol
133.33 K
Explanation:
= Avogadro's number = 
Change in enthalpy is given by

Entropy is given by

Latent heat of fusion is given by

The latent heat of fusion is 481.76 J/mol
Melting point is given by

Melting occurs at 133.33 K
<span>The definitions of the principal axis, centre of curvature , radius of curvature , and the vertex , of a convex mirror are analogous to the corresponding definitions for a concave mirror. </span>
Answer:

Explanation:
Let's define the variables to proceed with the operations,
So,
The masses



Average distances


Gravitational constant

The formula of the Gravitational Force between the Moon and the Earth would be,



This force is in the direction of the earth.
We perform the same process but now between the Sun and the Moon, like this,



This force is in the direction of the Sun
The net force must be


This in the direction of the Sun.
Answer: the velocity is zero at the following points
1. At the highest point in the oscillation.
2. At the lowest point in the oscillation.
Explanation: