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Nataly_w [17]
3 years ago
5

Why is it important to have a control group in a experiment?

Physics
2 answers:
goldenfox [79]3 years ago
5 0
You would compare the results from the experimental group with the results of the control group to see what happens when you change the variable you want to examine. A control group is an essential part of an experiment because it allows you to eliminate and isolate these variables.
Hopefully this helped.
zysi [14]3 years ago
4 0

Answer:it allows you to eliminate and isolate variables.

Explanation:

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Compare to a low wavelength sound wave, a high wavelength sound wave Select all that apply Group of answer choices travels slowe
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Answer:

B. has a smaller frequency

C. travels at the same speed  

Explanation:

The wording of the question is a bit confusing, it should be short/long for wavelength and low/high for frequency. I assume low wavelength mean short wavelength.

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Velocity is a product of wavelength and frequency. So, a long-wavelength sound wave should have a lower frequency.

The option should be:

A. travels slower -->false

B. has a smaller frequency -->true

C. travels at the same speed  --->true

D. has a higher frequency  --->false

E. travels faster has the same frequency  --->false

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