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
Answer:
The magnitude of charge on each sphere is .
Explanation:
Given that,
Force of repulsion between the charges, F = 22 mN
The distance between spheres, r = 16 mm = 0.016 m
It is mentioned that both the spheres carry equal charges. The force between charges is given by :
So, the magnitude of charge on each sphere is . Hence, this is the required solution.
The most accurate reading for the mass of the ball would be 404.2g.
the most accurate calculation of density for the ball, rounded to the nearest ten thousandths, would be 0.8084g/cm^3
Answer:
The magnetic field B of the transmission line is 4.5·10^(-6)T. The ratio B/Be is 0.0009% (there is no risk to human health)
Explanation:
we will consider a dc transmission line as an infinite longitudinal line in the Z-axis with a dc current of 180 A. To solve the problem we will use ampere's law. We can consider the geometry of the problem (Rotational symmetry in respect of Z-axis) than the field B is annular with center in the transmission line.
We will use a circular amperian curve C. Therefore:
For a height of 8.0m (r=8m):
Compared to the earth magnetic field:
Answer:
1.) distance is always positive while displacement can be negative as well.
2.) distance cannot be 0 but displacement can be 0.
3.) distance is a scalar quantity while displacement is vector quantity.