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2 answers:
Answer:
0.11 m/s and 0.28 m/s
Explanation:
Average velocity is defined as the ratio of total displacement covered to the total time taken.
For first 0.25 m
Total displacement = 0.25 m
Total time taken = 2.23 second
Average velocity = 0.11 m/s
For second 0.25 m
Total displacement = 0.50 - 0.25 = 0.25 m
Total time = 3.13 - 2.23 = 0.9 second
Average velocity = 0.28 m/s
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If one of two interacting charges is doubled, the force between the charges will double.
Explanation:
The force between two charges is given by Coulomb's law
K=constant= 9 x 10⁹ N m²/C²
q1= charge on first particle
q2= charge on second particle
r= distance between the two charges
Now if the first charge is doubled,
we get
F'= 2 F
Thus the force gets doubled.