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3 years ago

Why does a vibrating simple pendulum not to produce any sound

1 answer:

7 0

It does produce 'sound' ... a compression wave traveling through the air. But your ears don't hear a sound that's vibrating less than 20 or 30 times every second. If you could swing your pendulum that fast, you could hear the sound of its vibrations pushing the air around.

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Charge is distributed uniformly along a long straight wire. the electric field 2 cm from the wire is 20 n/c. the electric field

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The electric field 4cm from the wire is

$É = 10nc { }^{ - 1}$

Given:

charge is distributed uniformly along a long straight wire.

electric field 2cm from the wire is 20n/c

To find:

electric field 4cm from the wire

what is electric field?

Electric field is the region around charge particle or charged body in which if another charge is placed it experiences electrostatic force.An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

$E ∝ \frac{1}{r}$

$\frac{E}{É} = \frac{r2}{r1}$

$\frac{20}{ É } = \frac{4}{2}$

$É = \frac{40}{4}$

$É = 10nc {}^{ - 1}$

thus the electric field 4cm from the wire is

$É = 10nc { }^{ - 1}$

learn more about electrostatic force from here: brainly.com/question/28166144

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