The answer would be D. Because the iron fillings are attracted to the magnet underneath the glass.
Answer:
The critical angle is
Explanation:
From the question we are told that
The index of refraction of the glass in the fiber is
The index of refraction of the glass in the cladding is
The critical angle is mathematically evaluated as
substituting values
Answer:
C) Venus is closer to the Sun than Saturn is.
Explanation:
This is the right answer.
Physical changes do not change the identity of the substance. Heat causes chemical reactions. You cannot see chemical changes with the naked eye. The identity of a substance changes like when you burn paper, from paper it turns into ash and produces smoke, which are products from the chemical reactions.
The answer is 2.31!!!!!!!