3 years ago

What do a control group and an experiment group have in common ?

2 answers:

7 0

Whatever the focus of the experiment is, plus any others factors that might influence the outcome of the experiment. If you are testing a new cancer drug, the experimental group and the control group must both be people with the same type of cancer, and both be a representative distribution of the population, all races, genders, ages, etc. You want the only difference in the two groups to be what you are studying, i.e. the effects of the drug.

sladkih [1.3K]3 years ago

5 0

Whatever the focus of the experiment is, plus any others factors that might influence the outcome of the experiment.

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Neon atoms at 245 K pass through a fan that gives each mole of neon gas an additional kinetic energy of 16.0 J. Part A What is t

hjlf

Answer:

246.28 K

Explanation:

The total energy of one mole of gas molecules can be calculated by the formula given below

E = $\frac{3}{2}\times R\times T$

Where R is gas constant and T is absolute temperature.

Put the value of R as 8.314 and temperature as 245 , we get

E = $\frac{3}{2}\times 8.314\times 245$

= 3055.4 J

Add 16 j to it

Total energy of gas molecules = 3055.4 + 16 = 3071.4 J.

If T be the temperature after addition of energy then

$\frac{3}{2}\times 8.314\times T$ = 3071.4

T = $\frac{2\times 3071.4}{3\times 8.314}$

T = 246.28 K

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3 years ago

A car moves at a constant speed of 10 m/s. If the car doesn't accelerate during the next 40 s how far will it go?

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the answer is b. space = time * velocity

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Why do birds not get shock when they sit on high power live wire but we do?

Marina86 [1]

Answer:

Their bodies don't conduct electricity like we do.

Explanation:

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2 years ago

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Why is detergent mixed in a toothpaste?

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Two particles with the same charge will repel each other. True or false

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