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Vikentia [17]
3 years ago
9

1) For a positive point charge, the lines radiate ………. . While, for a negative point charge, the lines converge …………. .

Physics
1 answer:
ch4aika [34]3 years ago
5 0

Answer:

For a positive point charge, the lines radiate <u>outwards</u>, while for a negative point charge, the lines converge<u> inwards.</u>

Explanation:

A single point charges produces an electric field which has a radial shape.The sign of a charge determines the the direction of the field. In Positive charge have the direction of field is out of the charge and for negative charge, the direction of field is towards the charge.This behavior is in relation to how a positive test charge will experience in a field.

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At what distance x from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center?
Mrac [35]

Answer:

The value of x is 2.1 cm from the center of the coil.

Explanation:

Radius, R = 2.7 cm

Number of turns, N = 800

The magnetic field at the axis is half of the magnetic field at the center.

B_{axis}=\frac{B_{center}}{2}\\\\\frac{\mu o}{4\pi}\times \frac{2 \pi I N R^2}{\left (R^2 + x^2  \right )^{\frac{3}{2}}} = 0.5\frac{\mu o}{4\pi}\times\frac{2\pi N I}{R}\\\\\frac{R^2}{(R^2 + x^2)^\frac{3}{2}} = \frac{1}{2R}\\\\4R^6 = (R^2+x^2)^3\\\\1.6 R^2 = R^2 + x^2\\\\x^2 = 0.6 \times 2.7\times 2.7 \\\\x = 2.1 cm

4 0
3 years ago
11) The circumstance MOST LIKELY to cause a compass to give an erroneous reading is standing too close to
Likurg_2 [28]
That would be the presence of a magnet anywhere near the compass.
3 0
2 years ago
A runner makes one lap around a 200m track of 25s. What were the runners average speed and average velocity?
kobusy [5.1K]
Here is the answer. In order for us to get the speed, we are just going to use the formula speed is equal to distance over time. Given that the distance s 200m and the time is 25s, this would give us the answer of 8m/sec. Hope this answers your question.
5 0
3 years ago
a team of dogs is pulling a sled with a net force of 2000 N. The sled is accelerating a 2.2 m/s^2. What is the mass of the sled?
sweet-ann [11.9K]
Force, F = ma

Where m = mass in kg, a = acceleration in m/s²,  Force, F is in N.

F = ma

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m = 2000/2.2

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3 years ago
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The force is gravity
4 0
3 years ago
Read 2 more answers
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