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ladessa [460]
3 years ago
7

Why does a glass rod become positively charged when it is rubbed with a silk cloth?

Physics
2 answers:
earnstyle [38]3 years ago
4 0

Answer:

<u><em>A glass rod becomes positively charged when it is rubbed by a silk because the glass rod is negetively charged and when it is rubbed by the conductors like silk it gets positive charged.</em></u>

<u><em /></u>

<u><em>Explanation:</em></u>

satela [25.4K]3 years ago
3 0

Answer:

Hope this helps ya out

Explanation:

The core has positive charge, the electrons have negative charge. When you are rubbing the glass rod with the silk cloth, electrons are stripped away from the atoms in the glass and transferred to the silk cloth. This leaves the glass rod with more positive than negative charge, so you get a net positive charge.

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1. The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. What is the intensity of the source?
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<u>Answer</u>

1) A. 96 Candelas

2) A. Both of these types of lenses have the ability to produce upright images.

3) C. 5 meters


<u>Explanation</u>

Q1

The formula for calculation the luminous intensity is;

Luminous intensity = illuminance × square radius

Lv = Ev × r²

= 6 × 4²

= 6 × 16

= 96 Candelabra

Q2

For converging lenses, an upright image is formed when the object is between the lens and the principal focus while a diverging lens always forms and upright image.

A. Both of these types of lenses have the ability to produce upright images.

Q3

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= 25

r = √25

= 5 m




5 0
4 years ago
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An electric field is produced by the very long, uniformly charged rod drawn above. If the strength of the electric field is E1 a
Debora [2.8K]

Answer: hello the complete question is attached below

answer :

r2 = 4r1

Explanation:

Electric field strength = F / q

we will assume the rod has an infinite length

For an infinitely charged rod

E ∝ 1/ r

considering two electric fields E1 and E2 at two different locations as described in the question

E1/E2 = r1/r2 ----- ( 2 )

<u>Calculate for r2 when E2 = E1/4 </u>

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E1 / (E1/4) = r1 / r2

∴ r2 = 4r1

3 0
3 years ago
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