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umka21 [38]
3 years ago
8

** PLEASE PLEASE HELP A student uses the right-hand rule as shown.

Physics
2 answers:
guapka [62]3 years ago
7 0

As per right hand thumb rule if we put our thumb of right hand along the current in the wire then curl of fingers will show the direction of magnetic field.

So here as we can see the fingers in the above case is curled such that in front position its showing towards right.

So the direction of magnetic field near the student in front position must be towards Right.

elena-14-01-66 [18.8K]3 years ago
5 0

What is the direction of the magnetic field in front of the wire closest to the student?


B) Right

                                                                                                                                           

                                                                                                                                                 

                                                                                                                                               

                                                                                                                                                                                                                                                                                                       

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Answer:

a) x = 0.200 m

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q_1 = 47.0\mu C

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by relation for electric field we have following relation

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FROM FIGURE

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\frac{k21}{x}^2 = \frac{k47}{0.5-x}^2

solving for x we get

\frac{0.5}{x} = 1+ \sqrt{\frac{47}{21}}

x = 0.200 m

b)electric field at half way mean x =0.25

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A bead slides without friction around a loopthe-loop. The bead is released from a height 21.9 m from the bottom of the loop-the-
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Answer:

Part a)

v = 12.45 m/s

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Explanation:

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As we know that the point A lies on the top of the loop

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mgH = \frac{1}{2}mv^2 + mg(2R)

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v = \sqrt{2g(H - 2R)}

v = \sqrt{2(9.81)(21.9 - 2\times 7)}

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Now the force equation at point A is given as

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F_n = \frac{mv^2}{R} - mg[/tex]

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Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equ
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Answer:

Magnitude of the net force on q₁-

Fn₁=1403 N

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Fn₃= 810 N

Explanation:

Look at the attached graphic:

The charges of the same sign exert forces of repulsion and the charges of   opposite sign exert forces of attraction.

Each of the charges experiences 2 forces and these forces are equal and we calculate them with Coulomb's law:

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Fn₃x= 810- 810 cos 60° = 405 N

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Magnitude of the net force on q₂+

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