Answer:
W = 2.74 J
Explanation:
The work done by the charge on the origin to the moving charge is equal to the difference in the potential energy of the charges.
This is the electrostatic equivalent of the work-energy theorem.
where the potential energy is defined as follows
Let's first calculate the distance 'r' for both positions.
Now, we can calculate the potential energies for both positions.
Finally, the total work done on the moving particle can be calculated.
Answer: (5/6) m/s
Explanation:
Distance = 100m
Time taken = 2 min
= 2 × 60 s
= 120 s
Speed = ?
Now,
Speed = distance / time taken
Speed = 100 / 120
Speed = (5/6) m/s
Which excerpt are you talking about?
Rolling friction is less than sliding friction