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Sidana [21]
3 years ago
6

A swing oscillates 8 times in 12 seconds what is its period what is its frequency

Physics
1 answer:
kotykmax [81]3 years ago
4 0
[Period (T)] T=time/# of cycles
T=12/8=3/2

[Frequency (F)] F=# of cycles/time
F=8/12=2/3

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2. the dipole moment of a dipole in a 300-n/c electric field is initially perpendicular to the field, but it rotates so it is in
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Work Done (W) by the field is-6x 107 J,

<h3>What is Electric dipole?</h3>

A pair of opposite, non-coplanar, equally powerful electric charges that are in opposition to one another. An atom is said to have a "induced electric dipole" if the center of the negative cloud of electrons has moved a little bit away from the nucleus due to an external electric field. When the external field is taken away, dipolarity is lost.

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Solution:

From the formula we know.

U = -pE cosФ

Here,

p Denotes Dipole moment.

E Denotes Electric field.

Ф Denotes angle b/w them

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So, let's find Change in Potential energy which will be equal to the work done

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ΔU = Uf - Ui

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ΔU = pE * [cos Ф2+ cos Ф1]

Substituting the values,

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ΔU = 6 x 10^(-9+2)

ΔU = 6 x 10^-7

W = ΔU = -6 x 10^-7

W = - 6 x 10 7 J

Work Done (W) by the field is - 6 x 10-7 J.

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