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MrMuchimi
3 years ago
13

A rubber balloon has become negatively charged from being rubbed with a wool cloth, and the charge is measured as 1.00 × 10−14 C

. According to this charge, the balloon contains an excess of how many electrons?
Physics
1 answer:
inysia [295]3 years ago
5 0

Answer:

1.60 x 10-10 C

Explanation:

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A circular loop with radius r is rotating with constant angular velocity ω in a uniform electric field with magnitude E. The axi
inn [45]

Answer:

\Phi_{E} = E\pi r^2 \omega t

Explanation:

The electric flux is defined as the multiple of electric field and the area that the electric field passes through, such that

\Phi_{E} = \vec{E}\vec{A}

When calculating the electric flux, the angle between the directions of electric field and the area becomes important, especially if the angle is changing with time.

The above formula can be rewritten as follows

\Phi_{E} = EA\cos(\theta)

where θ is the angle between the electric field and the area of the loop. Note that, the direction of the area of the loop is perpendicular to the plane of the loop.

If the loop is rotating with constant angular velocity ω, then the angle can be written as follows

\theta = \omega t

At t = 0, cos(0) = 1 and the electric flux through the loop is at its maximum value.

Therefore the electric flux can be written as a function of time

\Phi_{E} = E\pi r^2 \omega t

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4 years ago
Acceleration is zero if
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It’s doesn’t change meaning it’s 0
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The Answer to the question is plant cell. I got this wrong...Thanks Alot
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This is a statement not a question .

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Archer shoots his arrow towards a target at a distance of 90 m and hits bullseye . Calculate the acceleration and time taken by
goldfiish [28.3K]

Answer:

acceleration = 45 m/s²

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Explanation:

We are given;

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So, to find the acceleration, we can use Newton's 2nd law of motion which is;

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Plugging in the values;

90² = 0² + 2a(90)

8100 = 180a

a = 8100/180

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A 100 W lightbulb produces 5.0 W of visible light. (The other 95 W are dissipated as heat and infrared radiation.) What is the l
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Answer:

17.5

Explanation:

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