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Vitek1552 [10]
3 years ago
14

Describe the quantum mechanical model of the atom and several observations which support this model.

Physics
1 answer:
PIT_PIT [208]3 years ago
7 0

This means that we shouldn't imagine electrons as single objects going around the atom. Instead, all we know is the probability of finding an electron at a particular location. What we end up with is something called an electron cloud. An electron cloud is an area of space in which an electron is likely to be found. It's like a 3-D graph showing the probability of finding the electron at each location in space. Quantum mechanics also tells us that a particle has certain numbers (called quantum numbers) that represent its properties. Just like how materials can be hard or soft, shiny or dull, particles have numbers to describe the properties. These include a particle's orbital quantum numbers, magnetic quantum number, and its spin. No two electrons in an atom can have exactly the same quantum numbers. Orbital quantum numbers tell you what energy level the electron is in. In the Bohr model, this represents how high the orbit is above the nucleus; higher orbits have more energy. The first orbit is n=1, the second is n=2, and so on. The magnetic quantum number is just a number that represents which direction the electron is pointing. The other important quantum mechanical property, called spin, is related to the fact that electrons come in pairs. In each pair, one electron spins one way (with a spin of one half), and the other electron spins the other way (with a spin of negative one half). Two electrons with the same spin cannot exist as a pair. This might seem kind of random, but it has effects in terms of how magnetic material is. Materials that have unpaired electrons are more likely to be magnetic

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PLEASE HELP!!! WILL GET BRAINIEST
zysi [14]
Hello There


Answers: 

1) BEVs and hydrogen fuel cell vehicles are more promising for the future because they reduce gas emissions as well as CO2 which makes our planet less-pulluted

2) This is an opinion. Mine is that they should be required to at least have it be an option to buy.

I hope this helps
-Chris


4 0
3 years ago
Heat engines take input energy in the form of heat, use some of that energy to do work, and exhaust the remainder. Similarly, a
Elanso [62]

Answer:

a).Q_{h}=1.5x10^5J

b).Q_{c}=13.2x10^3J

Explanation:

a).

Using the law of thermodynamic and using to isovolumetric

ΔU=Qh

Q_{h}=\frac{W_{net}}{Efficiency}

So to determine the internal energy knowing the work it do

Q_{h}=\frac{1.5x10^4J}{0.10}=1.5x10^5J

b).

Efficiency is the work done in relation of the work apply in this case to produce heat so:

E=\frac{Q_{h}-Q_{c}}{Q_{h}}

Solve to Qc

Q_{c}=Q_{h}*[1-E]

Q_{c}=1.5x10^4J*(1-0.10)

Q_{c}=13.2x10^3J

3 0
3 years ago
A wheel rotates with a constant angular acceleration of 6.0 rad/s2. During a certain time interval its angular displacement is 8
kari74 [83]

The angular velocity at the beginning of the interval of the wheel rotating  at a constant angular acceleration is determined as 10 rad/s.

<h3>Initial angular velocity of the wheel</h3>

The initial angular velocity of the wheel is determined by applying the kinematic equation as shown below;

ωf² = ωi² + 2αθ

where;

  • ωf is the final angular velocity
  • ωi is the initial angular velocity
  • α is angular acceleration
  • θ is angular displacement

Substitute the given parameters and solve for the initial angular velocity.

14² = ωi² + 2(6)(8)

196 = ωi² + 96

ωi² = 196 - 96

ωi² = 100

ωi = √100

ωi = 10 rad/s

Thus, the initial angular velocity of the wheel is 10 rad/s.

Learn more about angular velocity here: brainly.com/question/6860269

3 0
2 years ago
How does the buoyant force affect a submerged object
NeX [460]

Answer:

The buoyant force is the pressure of the object being forced upward.  

<em>Weight of the object affects the buoyant force</em> of the submerged object; as weight is added to the object, it will cause the object to sink.  The more weight...the more it will sink.

If the weight is less than the buoyant force, it will cause the object to go up.

If the weight is the same as the buoyant force, the object will stay in the same position.

Explanation:

5 0
3 years ago
Help!!
Mkey [24]

Answer:

6.2j

Explanation:

work done=force × displacement

wd=11N×0.56m

wd=6.16N/m~6.2j

4 0
3 years ago
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