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LenaWriter [7]
3 years ago
6

Which of the following is a pure substance?

Physics
1 answer:
Veronika [31]3 years ago
6 0

Answer:

B.

Explanation:

In a scientific context, “pure” denotes a single type of material. Ostensibly, compounds contain more than one type of material. Yet both compounds and elements are considered pure substances. Pure compounds are created when elements combine permanently, forming one substance.

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Scientists have found that the most destructive and deadly tornadoes occur from rotating thunderstorms called
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Answer:

Supercells

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supercells are rotating thunderstorms that has a well-defined radar circulation called a mesocyclone. They can sometimes produce destructive hail, severe winds, frequent lightning, and flash floods.

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4 years ago
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Tapping the surface of a pan of water generates 17.5 waves per second. If the wavelength of each wave is 45 cm, what is the spee
ElenaW [278]

Answer:

Speed of the wave is 7.87 m/s.

Explanation:

It is given that, tapping the surface of a pan of water generates 17.5 waves per second.

We know that the number of waves per second is called the frequency of a wave.

So, f = 17.5 Hz

Wavelength of each wave, \lambda=45\ cm=0.45\ m

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v=17.5\times 0.45

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So, the speed of the wave is 7.87 m/s. Hence, this is the required solution.

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3 years ago
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Trees. Every time the wind blows there is a wave of motion which is movement

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What is the metric unit of force? kg kg/cm^3 kg/cm^2 N
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Which part of the electromagnetic spectrum is divided into seven ranges of wavelengths and is the part visible to the human eye
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In one of the most amazing coincidences in all of science,
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