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2 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! Which number shows the wavelength?

Physics

2 answers:

Ray Of Light [21]2 years ago

6 0

If you read the question carefully, you can find the answer right there in it.

In fact, you don't even have to read the whole question ... you only need to read one word.

In fact, you don't even have to read the whole word ... you only need to read part of the word.

The word to read is "wavelength".

The important part of the word is "length".

Now it's time to look at the picture:

#1 is a height.

#2 is a place on the wave

#4 is a place on the wave

#3 is the only thing in the picture that's a "length" of anything.

uysha [10]2 years ago

6 0

Number 3 is the wavelength

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2 years ago

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Two spheres have identical charges and are 75 cm apart. the force between them is +0.30 n. what is the magnitude of the charge o

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Answer:

$4.33\cdot 10^{-6}C$ , charges are both positive or both negative

Explanation:

The electrostatic force between the two spheres is given by

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the charges on the two spheres

r is the distance between the centres of the two spheres

In this problem, we have

$F=+0.30 N$ is the force

$r=75 cm=0.75 m$ is the distance between the spheres

$q_1 =q_2 =q$ because the two spheres have identical charge

Solving the formula for q, we find

$q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(+0.30 N)(0.75 m)^2}{9\cdot 10^9}}=4.33\cdot 10^{-6}C$

And the two charges have the same sign (so, both positive or both negative), since the sign of the force is positive (+0.30 N), so it is a repulsive force.

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2 years ago

Please help me, please i will mark brainliest

abruzzese [7]

Answer:

conductor,neither,insulator

Explanation:

conductors allow electricity to flow through while insulators do not

HOPE IT HELPS

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In general, if a wavelength is short;

Scorpion4ik [409]

Hello there.

In general, if a wavelength is short;

A- the energy and frequency are high

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2 years ago