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torisob [31]
3 years ago
6

If 10. joules of work must be done to move 2.0 coulombs of charge from point A to point B in an electric field, the potential di

fference between points A and B is
Physics
1 answer:
masya89 [10]3 years ago
8 0
The equation for work (W) done by an electric field is:

W = qΔV

where q is the magnitude of the charge and ΔV is the potential difference. The question gives you W and q, so plug n' play to find ΔV:

10 = 2ΔV
ΔV = 5
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The time taken by the swimmer was 1 hour.

Why?

Since the swimmer is maintaining an angle of 150° while he was swimming, there were two components of the speed (horizontal and vertical). If we want to calculate the time taken by him to cross the river, we need to calculate the vertical speed and consider that the flow's speed is compensated by his horizontal speed.

We can calculate both components of the speed using the following formula:

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Have a nice day!

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