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2 years ago

Wolfgang pauli hypothesized an exclusion principle. This principle says two electrons in an atom cannot have the same what?.

1 answer:

3 0

No two electrons in an atom or molecule may have the same four electronic quantum numbers, according to the Pauli Exclusion Principle. Only two electrons can fit into an orbital at a time, hence they must have opposing spins.

<h3>What is Pauli's exclusion principle ?</h3>

According to Pauli's exclusion principle, two electrons cannot share the same orbital and must have anti-parallel or opposite spins. Example: Two bonded electrons in a neutral helium atom achieve the opposite spin to occupy the lowest-energy () states.

It is known as the exclusion principle because, in accordance with it, all other electrons in an atom are excluded from having the same set of specific values for the four quantum numbers as one electron in the atom.

Learn more about Pauli's exclusion principle here:

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A jogger runs at an average speed of 5 m/s for 3 minutes, then finishes with an average speed of 4 m/s for 2 minutes. What is hi

Mrac [35]

Answer:

4.6 m/s

Explanation:

5 * 180 + 4 * 120 = 1380

1380 / (5 * 60) = 4.6

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4 years ago

A navy diver hears the underwater sound wave from an exploding ship across the harbor. They immediately lift their head out of t

tamaranim1 [39]

Answer:

s = 1800 m = 1.8 km

Explanation:

The distance, the speed, and the time of reach of the sound are related by the following formula:

$s = vt$

where,

s = distance

v = speed

t = time

FOR WATER:

$s = v_wt$ ---------------------- eq (1)

where,

s = distance between ship and diver = ?

$v_w$ = speed of sound in water = 1440 m/s

t = time taken by sound in water

FOR AIR:

$s = v_a(t+4\ s)$ ---------------------- eq (2)

where,

s = distance between ship and diver = ?

$v_a$ = speed of sound in water = 344 m/s

t + 4 s = time taken by sound in water

Comparing eq (1) and eq (2),because distance remains constant:

$v_wt=v_a(t+4\ s)\\\\(1440\ m/s)t = (344\ m/s)(t+4\ s)\\(1440\ m/s - 344\ m/s)t=1376\ m\\t = \frac{1376\ m}{1096\ m/s}$

t = 1.25 s

Now using this value in eq (1):

$s = (1440\ m/s)(1.25\ s)$

4 0

3 years ago

Why does a mirror get misty after a shower??

masha68 [24]

This is because warm water vapor, suspended in the air, transforms back into water droplets as it cools. These small droplets collect on surrounding surfaces and are especially noticeable on materials such as glass since they distort light waves, making the mirror and windows appear foggy or misty

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3 years ago

A wave is represented by the equation y = 0.20 sin [ 0.4π (x – 60t)], where x and y are in cm and t is in s. The velocity of the

Leya [2.2K]

Answer:

v = 60 m/s

Explanation:

It is given that,

A wave is represented by the equation :

$y=0.2\sin [0.4\pi (x-60)t]$

We need to find the velocity of the wave

The general equation of a wave is given by :

$y=A\sin (kx-\omega t)$ ....(1)

Equation (1) can be written as :

$y=0.2\sin (0.4\pi x-24\pi t)$ ...(2)

If we compare equation (1) and (2) we get :

$k=0.4\pi$

$\omega=24\pi$

The velocity of a wave is given by :

$v=\dfrac{\omega}{k}\\\\v=\dfrac{24\pi}{0.4\pi}\\\\v=60\ m/s$

So, the velocity of the wave is 60 m/s.

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3 years ago

Which of the following is an example of energy changing from one form to another?

Anastaziya [24]

The correct option is

a fire

In fact, a fire is a conversion of chemical energy (contained in the molecules of the initial substances) into thermal energy (the heat released by the fire itself), therefore this is an example of energy changing from one form to another. All the other objects, instead, do not represent any form of energy conversion.

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4 years ago

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