3 years ago

How many energy levels do the electrons occupy for a neutral Oxygen atom? *

1 answer:

6 0

Answer:

The neutral state of an atom is when it's net charge is zero; that is, the number of protons equals the numbers of electrons. Oxygen is the eighth element in the periodic table, with the symbol O. This means that it has eight electrons in its neutral state. Since it is neutral, it also has eight protons!

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A bungee jumper attains a speed of 30 m/s just as the bungee cord begins to stretch. If the period of stretch is 2 s while comin

Bogdan [553]

Answer: $1.53g$

Explanation:

average deceleration= ?

inial velocity: $u=0$

final velocity: $v=30m/s$

time: $t=2seconds$

The first law of kinematics :

$v=u+at$

find a the subject of the formula

$a=v-u/ t$

$a=\frac{0-30} 2$

$a=-30/2$

$a=-15m/s^{2}$

The deceleration about g(acceleration due to gravity) will be:

$15/9.8$

$1.53g$

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3 years ago

A helicopter is traveling at 86.0 km/h at an angle of 35° to the ground. What is the value of Ax? Round your answer to the neare

arsen [322]

First thing plot a right angle with angle of elevation of 35degrees as shown in figure then use SOHCAHTOA.

Ay/Helicopter = sin 35

Ay = 86 sin 35 = 36.8237

Ax/Helicopter = cos 35

Ax = 86 cos 35 = 77.7175

Note: I ignore the negative signs coz they signify direction

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3 years ago

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a soccer player kicks a ball with a speed of 30 m/s at an angle of 10. how long does the ball stay in the air?

Brut [27]

3.763 seconds I think

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Why are experiments often performed in laboratories?

Marrrta [24]

Answer:

Explanation:

Laboratories are usually controlled: however, in public places, there are way too many factors that could change an experiment

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3 years ago

What is the difference between polarization and separation of charge

DIA [1.3K]

The two sides of the aluminium pop can have opposite charges. Overall the can is electricity neutral; it's just that the positive and negative charge has been separated from each other. We can say that the charge in the can has been polarized. In general terms, polarization means to separate into opposites.

HOPE IT HELPS!!!!!!
plz mark as a brainliest answer!!!!!

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3 years ago