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Nana76 [90]
4 years ago
5

Margaret is the new director of research at a well-known pharmaceutical company. She has been asked to design a set of research

studies that will test the effectiveness of the new drugs that are being developed. Because Margaret is concerned about ensuring that experimenter bias and research participant bias do not influence the results, she should design a set of
Physics
1 answer:
Serjik [45]4 years ago
7 0

Answer:

Double blind experiment

Explanation:

It is an experimental method , which helps to avoid any impartiality and any error due to biasing .

The experiment give rise to very accurate results , which is very important for any experiment .

Hence , the new director Margaret , need to design a set of double - blind experiments.

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The speed of the cart changed because it stopped. 

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3 years ago
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We can change a gas to liquid by the temperature and the pressure.
hodyreva [135]

I am not sure how you want me to answer this, but yes, gas can go from being a gas to a liquid when the right temp and pressure is applied.

6 0
3 years ago
Which statement expresses the relationship between the frequency of emitted electrons and the energy they give off?
Nadusha1986 [10]
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5 0
4 years ago
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580 nm light shines on a double slit
Helga [31]

Answer:

0.532

Explanation:

Your equation to find the second bright interference maximum is gonna be this: d sin (Θ) = m λ

First, find your variables.

λ = 580 · 10^-9

d = 0.000125

m = 2

Next, fill in the equation.

d sin (θ) = m λ

(0.000125) sin (θ) = (2) (580·10^-9)

Then isolate your variable.

θ = arcsin ( (2)(580·10^-9) / (0.000125) )

Run your equation and you will end up with 0.53171246 , which rounds to 0.532.

The main thing you have to watch out for is make sure you are calculating for the bright interference and not the dark interference, as well as checking you're calculating for the maximum, not the minimum.

I hope this helps :D

5 0
3 years ago
During which changes of state do atoms overcome the attractive forces between them?
prohojiy [21]
Atoms overcome the attractive forces between them through vaporization and sublimation .in vaporization the atoms are from gas to liquid while in sublimation it is from solid to gas which skips liquid state.through this the attractive force of the atoms does not meet in the liquid state because sublimation does not undergo in liquid phase. hope this help
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3 years ago
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