The lower layer is thought to be hard and rough
I think it’s the second one: magnetic domains must come in pairs—one north and one south
Here, Your answer would be option D) Voltage Source.
Charge flows from it in a particular direction, and a charge ( static or dynamic ) creates an electric field around it (can be experimentally observed by a test charge), whereas all the other options are appliances which needs current ( rate of flow of charge ) to work.
In short, Your correct Answer would be Option D)-Voltage Source.
Hope this helps!
Answer:
observer bias
Explanation:
Based on the information provided within the question the thing that should concern us the most about Sandi's observations is Observer Bias. This term refers to the tendency of a researcher to see what they want as opposed to what is actually happening. This can be said because of Sandi's belief that McDonald clients are all overweight, by having this belief before actually having come to this conclusion with a series of tests, it might lead her to believe this to be true regardless of what she observes during the experiment.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
D. The movement that will require the greatest amount of work to be
done is a force of<u> 15n moving an object a distance of 5.0m</u> (75 J).
<h3>What is work done?</h3>
Work is said to be done when an applied force moves an object over a given distance.
W = Fd
where;
- F is the applied force
- d is the displacement of the object
<h3>A force of 10n moving an object a distance of 3.0 m</h3>
W = 10 x 3 = 30 J
<h3> A force of 10n moving an object a distance of 5.0m</h3>
W = 10 x 5 = 50 J
<h3>A force of 15n moving an object a distance of 3.0m</h3>
W = 15 x 3 = 45 J
<h3>A force of 15n moving an object a distance of 5.0m</h3>
W = 15 x 5 = 75 J
Thus, the movement that will require the greatest amount of work to be
done is a force of<u> 15n moving an object a distance of 5.0m</u> (75 J).
Learn more about work done here: brainly.com/question/8119756
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