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Leya [2.2K]
3 years ago
6

Select the correct answer. Which hand is negatively charged?

Physics
1 answer:
ozzi3 years ago
6 0

Answer:

b

Explanation:

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5 0
3 years ago
The magnetic field produced by a long straight current-carrying wire is
alexdok [17]

Answer:

proportional to the current in the wire and inversely proportional to the distance from the wire.

Explanation:

The magnetic field produced by a long, straight current-carrying wire is given by:

B=\frac{\mu_0 I}{2 \pi r}

where

\mu_0 is the vacuum permeability

I is the current intensity in the wire

r is the distance from the wire

From the formula, we notice that:

- The magnitude of the magnetic field is directly proportional to I, the current

- The magnitude of the magnetic field is inversely proportional to the distance from the wire, r

Therefore, correct option is

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A 200-N woman is standing on a concrete floor. How much force does the floor exert on her?
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