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Lubov Fominskaja [6]
3 years ago
15

Bohr's atomic model differed from Rutherford's because it explained that

Physics
2 answers:
Julli [10]3 years ago
6 0

Answer:

Bohr's model explained that there were electrons that orbited the nucleus quantised orbits

Explanation:

emmainna [20.7K]3 years ago
5 0

Answer:

Bohr’s atomic model differed from Rutherford's because it explained that  <em><u>electrons exist in specified energy levels surrounding the nucleus (option A)</u></em>

Explanation:

Rutherford's atomic model was based on a central nucleus surrounded by electrons, as in the solar system. But this model had a contradiction corresponding to the fundamental laws of electrodynamics: considering that negatively charged electrons revolve around the nucleus they should emit electromagnetic radiation, with the consequent loss of energy. This radiation would consume energy that would cause electrons to collapse with the nucleus. Therefore, this model could not explain the stability of the atom.

Therefore, Bohr proposed that the electrons were at a certain distance from the nucleus, rotating in circles. Each circle or orbit was provided with a predetermined amount of energy. If an electron jumped into an orbit of lower energy, it would emit electromagnetic radiation. In short, Bohr's model solved the problem of the Rutherford model by indicating that electrons orbit around the nucleus but in certain orbits allowed with a specific energy. These defined orbits were referred to as layers of energy or energy levels. In other words, the energy of an electron within an atom is not continuous, but "quantified." Electrons can only gain or lose energy by jumping from one permitted orbit to another and, when this happens, it would absorb or emit electromagnetic radiation in the process.

Then, <u><em>Bohr’s atomic model differed from Rutherford's because it explained that  electrons exist in specified energy levels surrounding the nucleus (option A)</em></u>

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A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surfac
taurus [48]

Answer:  

a. Speed = 1.6 m/s  

b. Amplitude = 0.3 m  

c. Speed = 1.6 m/s  

Amplitude = 0.15 m  

Explanation:  

a.  

The frequency of the wave must be equal to the reciprocal of the time taken by the boat to move from the highest point to the highest point again. This time will be twice the value of the time taken to travel from the highest point to the lowest point:

frequency = \frac{1}{2(2\ s)} = 0.25 Hz  

The wavelength of the wave is the distance between consecutive crests of the wave. Therefore,  

Wavelength = 6.4 m  

Now, the speed of the wave is given as:  

Speed = (Frequency)(Wavelength)  

Speed = (0.25 Hz)(6.4 m)  

<u>Speed = 1.6 m/s</u>

b.  

Amplitude is the distance between the mean position of the wave and the extreme position. Hence, it will be half the distance between the highest and lowest point:  

Amplitude = (0.5)(0.6 m)  

<u>Amplitude = 0.3 m</u>  

c.  

frequency = \frac{1}{2(2\ s)} = 0.25 Hz  

Speed = (Frequency)(Wavelength)  

Speed = (0.25 Hz)(6.4 m)  

<u>Speed = 1.6 m/s</u>  

Amplitude = (0.5)(0.3 m)

<u>Amplitude = 0.15 m</u>

6 0
3 years ago
Think of an example that you could use to convice a friend that an object at rest has an "internal hold back property" that is d
zmey [24]

Answer:

Explanation:

There are various examples around us that states " internal hold back property " and is different from frictional force or the force of Earth's gravity.

The plaster which is the mixture of cement and water has an adhesive nature and molecules inside them has a internal hold back property. They stick to the walls and ceiling and do not fall.

Though gravity is applied on it still its molecules tends to hold the ceiling firmly and do not fall upon.

7 0
4 years ago
A man of 70 kg climbs a stair. He climbs 15 steps in 1 minute. If the height of 1 step is 15 cm . Calculate his power . (G=9.8 m
UkoKoshka [18]

Answer:

564

Explanation:

464565

7 0
2 years ago
A long, straight, vertical wire carries a current upward. due east of this wire, in what direction does the magnetic field point
Solnce55 [7]
(I assume that the 4 directions north-south-east-west are meant with respect to the wire seen from the top.)

We can use the right-hand rule to understand the direction of the magnetic field generated by the wire. The thumb follows the direction of the current in the wire (upward), while  the other fingers give the direction of the field in every point around the wire. Seen from the top, the field has an anti-clockwise direction. Therefore, if we take a point at east with respect to the wire, in this point the field has direction south.
8 0
3 years ago
Which energy transformation occurs in an
Mnenie [13.5K]
A motor takes in electricity from a cell or power source and then uses it to move components.

Therefore the answer is (1) Electrical to Mechanical
5 0
3 years ago
Read 2 more answers
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