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larisa86 [58]
3 years ago
11

What is the difference between Rutherford's model of the atom and Bohr's model of the atom? A. There is no difference. B. Bohr's

model builds on Rutherford's model and states that electrons are in fixed circular orbits, but they can move if they have enough energy. C. Rutherford's model states that electrons move in orbits around the nucleus, while Bohr's model suggests that electrons float in a sea of positive charge.
Physics
1 answer:
ExtremeBDS [4]3 years ago
5 0
B. Bohr's model builds on <span>Rutherford's model and states that electrons are in fixed circular orbits, but they can move if they have enough energy</span>
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A dog mass with 14 kg has a kinetic energy of 135.5 J.What is the speed of the dog?
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cylindrical electric resistance heater has a diameter of 1cm and length of 0.25m. When air at 25oC flows across the heater a hea
kirza4 [7]

Answer:

Explanation:

From the information given:

The diameter of the cylindrical heater (d) = 1 cm

The length of the cylindrical heater (l) = 0.25 m

The ambient air temperature (T_{\infty}) = 25° C= (273+25)K = 298 K

The convective heat transfer coefficient (h) = 25 W/m² °C

The electric input Q = 5W

As stated in the question that if radiation is being neglected:-

Let also assume that;

the heat transfer takes place at a steady-state

1-D flow takes place

No external heat generation; &

No force convection takes place;

Then; the heat transfer through the convection can be calculated as:

Q = hA(T - T_{\infty})

5= 25 \times (\pi \times (1\times 10^{-2}) \times 0.25) (T -0.25)

By solving the above calculation:

T ( surface temperature of the heater) = 50.46° C  122.83° F

3 0
3 years ago
A storm sewer with a diameter of 3.0 ft carries a discharge of 20 ft3/s. A hydraulics jump occurs in this sewer, and the flow de
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The depth of the downstream of the jump is 2.37ft

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The explanation is shown on the first uploaded image

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Anions are _____ than their neutral parent atom, and cations are _____ than their neutral parent atom.
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In comparison to their neutral parent atom, anions are bigger and cations are smaller.

<h3>Why are anions of the same element larger than their neutral counterparts?</h3>

They are forced to spread out more due to electron-electron attraction. They can get closer to each other because there is less electron-electron repulsion.

Because cations contain fewer electrons than their parent atoms while maintaining the same nuclear charge, they are always smaller than those atoms. The leftover electrons are therefore held by the protons in the nucleus more tightly, and as a result, their radii are less than those of the parent atoms. With anion, this is the exact opposite.

To know more about anions and cations visit:

brainly.com/question/4933048

#SPJ4

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1 year ago
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