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Andru [333]
1 year ago
7

What is the magnitude of a the vertical electric field that will balance the weight of a plastic sphere of mass 2. 1 g that has

been charged to -3. 0 nc? (k = 1/4πε0 = 9. 0 × 109 n ∙ m2/c2)
Physics
1 answer:
sladkih [1.3K]1 year ago
5 0

The magnitude of a vertical electric field that will balance the weight of a plastic sphere of mass 2. 1 g that has been charged to -3. 0 NC is 6.86 × 10^{6} N/C.

An electric field is the physical field that surrounds electrically charged particles and exerts a force on all other charged particles in the field, either attracting or repelling them. It also refers to the physical field of a system of charged particles.

It is given that,

Mass of sphere, m = 2.1 g =0.0021kg

Charge,q = ₋3nC = ₋ 3 ₓ 10^{-9}

To balance the weight of a plastic sphere, we must determine the magnitude of the electric field. So,

ma= qE

a = g

E = \frac{mg}{q}

E = \frac{0.0021 * 9.8}{-3 * 10^{-9} }

E = 6860000 N/C

E = 6.86 × 10^{6} N/C

Hence, the magnitude of the electric field that balances its weight is 6.86 × 10^{6} N/C .

To know more about  electric field refer to:  brainly.com/question/8971780

#SPJ4

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Decreases the time period of revolution

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The time period of Cygnus X-1 orbiting a massive star is 5.6 days.

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                                         ω = √[GM/(R + h)] /(R +h)

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The time period of rotational motion is,

                                     T = 2π/ω

By substitution,

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Two billiard balls move toward each other on a table. The mass of the number three ball, m1, is 5 g with a velocity of 3 m/s. Th
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This question involves the concepts of the law of conservation of momentum and velocity.

The velocity of the eight ball is "5.7 m/s".

According to the law of conservation of momentum:

m_1u_1+m_2u_2=m_1v_1+m_2v_2

where,

m₁ = mass of number three ball = 5 g

m₂ = mass of the eight ball = 6 g

u₁ = velocity of the number three ball = 3 m/s

u₂ = velocity of the eight ball = - 1 m/s (negative sign due to opposite direction)

v₁ = final velocity of the three number ball = - 5 m/s

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Therefore,

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v_2=\frac{34\ g.m/s}{6\ g}\\\\

<u>v₂ = 5.7 m/s</u>

<u></u>

Learn more about the law of conservation of momentum here:

brainly.com/question/1113396?referrer=searchResults

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