What is convection ?

2 answers:

5 0

Convection is the rise of hot air and the drop of cold air due to a large amount of molecules being moved usually in gas form.\

Hope this helps!

True [87]4 years ago

5 0

Convection is basically when a liquid gets hot, rises, cools down, moves to the side and back to the bottom to get hot again. The best example of convection is a pot of boiling water

A more scientific definition of convection is: <span>the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
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hope this helps

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The speed of light in water is 2.25 x 108 m/s. What is true about the index of refraction of water? A. It is less than 1. B. It

guajiro [1.7K]

Good afternoon!

We can see that $\mathsf{2.25\times10^8\ \textless \ 3\times10^8 = c}$

The index of refraction can be calculated as:

$\mathsf{n = \dfrac{c}{v}}$

As we noted, $\mathsf{v \ \textless \ c}$ , and therefore:

$\mathsf{\dfrac{v}{v} \ \textless \ \dfrac{c}{v}}\\ \\ \\ \mathsf{\dfrac{c}{v} \ \textgreater \ 1}$

Beccause n = c/v, we have:

n > 1

B - Is more than 1.

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