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kenny6666 [7]
2 years ago
15

How can the atomic number of nitrogen be determined?

Physics
1 answer:
Doss [256]2 years ago
4 0

Answer:

So... for the element of NITROGEN, you already know that the atomic number tells you the number of electrons. That means there are 7 electrons in a nitrogen atom. Looking at the picture, you can see there are two electrons in shell one and five in shell two.

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Two identical charges, 2 m apart, exert forces of magnitude 4 N on each other. The value of each charge is: 1. 9 × 105 C 2. 4.2
lesya692 [45]

Answer:

The value of each charge is 4.22 x 10⁻⁵ C

Explanation:

Given;

distance between the two identical charges, d = 2 m

the force of repulsion between these two charges, F = 4N

Apply Coulomb's law;

F = \frac{kq_1q_2}{r^2} \\\\but \ q_1 =q_2,then \ let \ q_1 =q_2 = q\\\\F = \frac{kq^2}{r^2}\\\\q^2 = \frac{Fr^2}{k}\\\\q^2 = \frac{4*2^2}{9*10^9} \\\\q ^2 = 1.7778*10^{-9}\\\\q = \sqrt{1.7778*10^{-9}}\\\\q =4.22 *10^{-5} C\\\\q= q_1=q_2= 4.22 *10^{-5} C

Therefore, the value of each charge is 4.22 x 10⁻⁵ C

7 0
3 years ago
Physical values in the real world have two componnts: magnitude and ____
Dahasolnce [82]

Answer:

DIRECTION

Explanation:

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3 years ago
How many miles away is the sun to the earth?
geniusboy [140]
<span>92.96 million mi..........</span>
7 0
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Which of the following phenomena are due to the electric interaction? (Select all that apply.) surface tension in water friction
Eddi Din [679]

Answer:

Surface tension in water

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Explanation:

Surface tension in water: It is due to the electrostatic force of attraction (cohesive force) between water molecules.

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3 years ago
What from the following list of statements about vectors is definitely true? (section 3.3) The magnitude of a vector can be smal
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"Magnitude of a vector can be zero only if all components of a vector are zero."

Explanation:

"The magnitude of a vector can be smaller than length of one of its components."

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"Magnitude of a vector is positive if it is directed in +x and negative if is is directed in -X direction."

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Wrong. For the magnitude of a vector to be zero, all components must be zero.

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True.

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3 years ago
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