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bogdanovich [222]
2 years ago
14

Why is it important to use placebos and a double-blind approach in some studies

Physics
1 answer:
viktelen [127]2 years ago
6 0
Another name for these two words is "constant" and you want to have a "constant", because you want something to compare your experimental group to, to see whether data had changed or not. So you have placebos or a double- blind to compare your experimental group to it and also so you know you don't have a bias or anything in the study.
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Pls help answer embed <br>​
Savatey [412]

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

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or

\dfrac{1}{2}\rho CAv_t^2=mg

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So,

C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01

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5 0
3 years ago
Consider a cloudless day on which the sun shines down across the United States. If 2073 kJ of energy reaches a square meter ( m
Mnenie [13.5K]

The total amount of energy per hour is 2.039\cdot 10^{16} kJ

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Learn more about energy and power:

brainly.com/question/7956557

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