3 years ago

The word supersonic describes:

2 answers:

5 0

The answer to your question is A.

5 0

I think the answer is N

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strojnjashka [21]

Answer:

n = 1.42

Explanation:

The refractive index for a medium is given by the ratio of the speed of light in vacuum to the speed of light in a medium.

$n=\dfrac{c}{v}\\\\n=\dfrac{3\times 10^8}{2.1\times 10^8}\\\\n = 1.42$

So, the refractive index of the medium is 1.42.

5 0

3 years ago

Westkost [7]

Answer:

duplication being slightly more expensive.

Explanation:

3 0

2 years ago

Whitepunk [10]

Answer:

Energy flow is the flow of energy through living things within an ecosystem. All living organisms can be organized into producers and consumers, and those producers and consumers can further be organized into a food chain. Each of the levels within the food chain is a trophic level.

Radiation is energy that comes from a source and travels through space at the speed of light

Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break.

4 0

2 years ago

kenny6666 [7]

Most likely B. Will erode, if not it will grow weeds

6 0

3 years ago

nadezda [96]

Answer:

E+mc+UD-3

Explanation:

7 0

3 years ago