Answer:
From the formula of force:

since AB and k are constants:

x is a constant of proportionality
• when force is 4N, separation distance is 1

therefore, equation becomes

when r is doubled, r becomes 2. find F:

Answer:
I think it is A
Explanation:
Below, what belongs to the organs of the circulatory system in humans is...
<em>a. heart - kidneys - lungs</em>
b. heart-blood vessels - blood
c. heart - kidney - liver
d. heart - lungs
The assumption that the cosmic microwave background
is the remnant of the environment at the time of the big bang
or very shortly after it explains very well what we observe now.
So it is the current prevailing theory. "Believe" is not involved.
Answer:
12N S
Explanation:
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