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agasfer [191]
3 years ago
5

The magnetic field produced by a current in a long straight wire varies with respect to the radial distance r from the wire as G

roup of answer choices 1/r2. 1/r3. 1/r. r2. r.
Physics
1 answer:
Katarina [22]3 years ago
8 0

Answer:

1/r

Explanation:

The magnetic field produced by a current in a wire decreases with distance from the wire, this means the magnetic field produced by a currents is inversely proportional to it's distance from the wire.

Let E be magnetic field and r distance of wire

We have that,

E is inversely proportional to r

(E)×(1/r)

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A concave (convergent) mirror has a focus of 3.4 cm. A tree that is 0.5cm tall is situated 4.5 cm away from the mirror. Calculat
Elanso [62]

The image position is 13.9 cm from the mirror

Explanation:

To solve this problem, we can use the mirror equation:

\frac{1}{f}=\frac{1}{p}+\frac{1}{q}

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In this problem, we have:

f = 3.4 cm is the focal length of the mirror (positive for a concave mirror)

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Solving the equation for q, we find the position of the image:

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{3.4}-\frac{1}{4.5}=0.0719 cm^{-1}\\q=\frac{1}{0.0719}=13.9 cm

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brainly.com/question/8737441

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riadik2000 [5.3K]

Answer:

B. Dust storm

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Answer:

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