Answer:

Explanation:
The index of refraction is equal to the speed of light c in vacuum divided by its speed v in a substance, or
. For our case we want to use
, which for our values is equal to:

Which we will express with 3 significant figures (since a product or quotient must contain the same number of significant figures as the measurement with the <em>least</em> number of significant figures):

Answer:
B
This is because frictional energy is similar to thermal energy in a system. Therefore the thermal energy produced is equal to
Our eyes.... they send in image to our brain that's how we see... this isn't sarcasm
When scientific work can be duplicated it is proves a hypothesis is reliable.
For the record, in science, hypotheses can never be proven correct, and they always require evaluation. Even if a hypothesis still holds after being tested many times, it will always remain open to question.
Answer:
nope dont agree with that i think it would b a lot harder to do on a mass scale like that
Explanation:
Only way to do that is if aliens with far superior technology wise came to earth and did it