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const2013 [10]
3 years ago
12

a 5.0 charge is placed at the 0 cm mark of a meterstick and a -4.0 charge is placed at the 50 cm mark. what is the electric fiel

d at the 30 cm mark

Physics
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

-1748*10^N/C

Explanation:

See attached file

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A long thin uniform rod of length 1.50 m is to be suspended from a frictionless pivot located at some point along the rod so tha
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Answer:

0.087 m

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Length of the rod, L = 1.5 m

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T = 2\pi \sqrt{\frac{I}{mgd}}    .... (1)

where, I is the moment of inertia of the rod about the pivot point and g is the acceleration due to gravity.

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By using the parallel axis theorem, the moment of inertia of the rod about the pivot is

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Substituting the values in equation (1)

3 = 2 \pi \sqrt{\frac{\frac{mL^{2}}{12}+ md^{2}}{mgd}}

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Thus, the distance between the pivot and the centre of mass of the rod is 0.087 m.

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