Two spheres of equal diameter have a positive 20 µC and a negative 15 µC, respectively. If they are placed 10 cm apart, what would be the force of attraction between them? is at first raised? Why is the final answer is + 270 N if one of the given values is q2= - 15 C?

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter30: Atomic Physics
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Two spheres of equal diameter have a positive 20 µC and a negative 15 µC, respectively. If they are placed 10 cm apart, what would be the force of attraction between them? is at first raised?

Why is the final answer is + 270 N if one of the given values is q2= - 15 C?

Find:
The force of attraction between the charges: F
Solution:
The force of attraction between the charges is:
F
d?
(9x10° N - m²/c² )|20 µC||-15 µC|
(10 cm)
(9×10° N ·m²/C² )(20 ×10° c)(15×10 C)
(0.10 m )*
F = 270 N
Thus, the force of attraction between the charges is 270 N.
Transcribed Image Text:Find: The force of attraction between the charges: F Solution: The force of attraction between the charges is: F d? (9x10° N - m²/c² )|20 µC||-15 µC| (10 cm) (9×10° N ·m²/C² )(20 ×10° c)(15×10 C) (0.10 m )* F = 270 N Thus, the force of attraction between the charges is 270 N.
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