Answer:
I don't know about these problems
Explanation:
I don't know about these problems at all.
The paper clip did because it is a conductor. A pencil is made with wood and that is an insulator.
We have that the magnification of each focal length is given respectively as
A) has 
B) has 
C) has 
From the question we are told that:
Focal Length F
Generally, the equation for Magnification is mathematically given by

Therefore

For A

Therefore


Therefore

For B

Therefore

Where


Therefore

For C

Therefore

Therefore


Therefore

Conclusion
From the calculations above we can rightly say that the magnifications of the values above are
A has 
B has 
C has 
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Explanation:
the electrostatic force is also known as the coulomb force or coulomb interaction. it's the attractive or repulsive force between two electrically charged object. like charges repel each other while unlike charges attract each other. coulomb's law is used to calculate the strength of the force between two charger .
Answer:
16 is D, 17 is A, 18 is C, 19 is B ( would approve of brainliest)
Explanation:
16 is D, 17 is A, 18 is C, 19 is B