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taurus [48]
4 years ago
11

Metals vs. Nonmetals Physical Properties

Physics
2 answers:
vovikov84 [41]4 years ago
6 0

Answer:

sample c

Explanation:

sergiy2304 [10]4 years ago
3 0

Answer:

C) sample c

Explanation:

i got it right on usa test prep

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21. A person standing 49.5m from the foot of a cliff claps his hands and hears an echo 0.3
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330 m/s

Explanation:

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Which material transmits the most visible light?
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c

Explanation:

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3 years ago
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3 years ago
Two spherical objects are separated by a distance of 2.59 × 10-3 m. The objects are initially electrically neutral and are very
kodGreya [7K]

Answer:

Number of electrons, n = 12 electron

Explanation:

Given that,

The distance between charged spheres, d=2.59\times 10^{-3}\ m

The object experiences an electrostatic force that has a magnitude of, F=4.94\times 10^{-21}\ N

The electric force between spheres is given by :

F=\dfrac{kq^2}{d^2}

q=\sqrt{\dfrac{Fd^2}{k}}

q=\sqrt{\dfrac{4.94\times 10^{-21}\times (2.59\times 10^{-3})^2}{9\times 10^9}}

q=1.91\times 10^{-18}\ C

Let there are n number of electrons. Using quantization of electric charge we get :

q=ne

n=\dfrac{q}{e}

n=\dfrac{1.91\times 10^{-18}}{1.6\times 10^{-19}}

n = 11.93 electrons

or

n = 12 electrons

Hence, 12 electrons produce the charge on one of the objects.

4 0
3 years ago
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