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3 years ago

Gases, just like liquids are made of particles which can be further classified as atoms or molecules,

Physics

1 answer:

olga_2 [115]3 years ago

8 0

Answer:

True

Explanation:

Solids, Liquids, and Gases are all make up of <u><em>atoms and molecules. </em></u>

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tiny-mole [99]

Explanation:

Charges, $q_1=8\ \mu C=8\times 10^{-6}\ C$

$q_2=-5\ \mu C=-5\times 10^{-6}\ C$

The distance between charges, r = 10 cm = 0.1 m

We need to find the magnitude and direction of the electric force. It is given by :

$F=\dfrac{kq_1q_2}{r^2}\\\\F=\dfrac{9\times 10^9\times 8\times 10^{-6}\times 5\times 10^{-6}}{(0.1)^2}\\\\F=36\ N$

So, the required force between charges is 36 N and it is towards positive charge i.e. +8 μC.

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How much equal charge should be placed on the earth and the moon so that the electrical repulsion balances the gravitational for

kumpel [21]

As we know that electrostatic force between two charges is given as

$F = \frac{kq_1q_2}{r^2}$

here we know that electrostatic repulsion force is balanced by the gravitational force between them

so here force of attraction due to gravitation is given as

$F_g = 1.98 \times 10^{20} N$

here we can assume that both will have equal charge of magnitude "q"

now we have

$1.98 \times 10^{20} = \frac{kq^2}{r^2}$

$1.98 \times 10^{20} = \frac{(9\times 10^9)(q^2)}{(3.84 \times 10^8)^2}$

$1.98 \times 10^{20} = (6.10 \times 10^{-8}) q^2$

now we have

$q = 5.7 \times 10^{13} C$

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3 years ago

Uma wants to recreate the discovery of superconductivity. Which describes the materials needed?

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Answer:

B)a tool to drop temperatures, mercury, an electric current, and a tool to measure resistance

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Which characteristics describe a point charge?

wolverine [178]

Answer:

Explanation:

becauase i just tooke the test

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