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Neko [114]
3 years ago
12

HELP ASAP!!!!! ILL MARK YOU BRAINLIEST!

Physics
2 answers:
Julli [10]3 years ago
8 0
Hello! Sorry this is a little late!

The answer to your question would best be option C, y<span>es, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

I just took this test, and can 100% confirm this is the correct answer!

Hope this helps, and have a great day! :)</span>
valkas [14]3 years ago
3 0

Answer:

c. Yes, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

Explanation:

As we know by Coulomb's law the force of attraction or force of repulsion between two charged bodies is given by

F = \frac{kQ_1Q_2}{r^2}

now we know that

if two charges are of same sign then they will repel each other and if the two charges are of opposite sign then they must attract each other.

So here since two balloons are of negative charge so we can say that electric field on one balloon will repel the charge of other balloon.

So here both balloons will repel each other and correct answer will be

c. Yes, because electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them.

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Answer:

temperature change is 262.06°K

Explanation:

given data

mass = 0.07 kg

velocity = 258 m/s

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what is its temperature change

solution

we know here

heat change Q is is equal to kinetic energy that is

KE = 0.5 × m× v²   ...........1

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KE = 0.5 × 0.07 × 258²

KE = 2329.74 J

and we know

Q = mC∆t     .................2

here m is mass and ∆t is change in temperature and C is 127J/kg-K

so put here all value

2329.74 = 0.07 × 127 × ∆t

∆t = 262.06

so temperature change is 262.06°K

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4 years ago
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La comunicación verbal es aquella en la que se utilizan las palabras. El mensaje que se transmite se articula y expresa a través de la comunicación oral, o escrita. La comunicación verbal, surge de la necesidad de comunicarse

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