Oppositely charged objects attract each other. This attraction holds electrons in atoms and holds atoms to one another in many compounds. However, Ernest Rutherford’s model of the atom failed to explain why electrons were not pulled into the atomic nucleus by this attraction. What change to the atomic model helped solve the problem seen in Rutherford’s model?

Answers

Answer 1

Answer:

Answer:

A) Bohr’s work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.

Explanation:

Answer 2

Answer:

Final answer:

The change to the atomic model that helped solve the problem seen in Rutherford's model was the discovery of the strong nuclear force.

Explanation:

Rutherford's model required that the electrons be in motion. Positive and negative charges attract each other, so stationary electrons would fall into the positive nucleus. However, Rutherford's model failed to explain why electrons were not pulled into the atomic nucleus by this attraction. The change to the atomic model that helped solve this problem was the discovery of the strong nuclear force, which is much stronger than electrostatic interactions and holds the protons and neutrons together in the nucleus.

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The Otto-cycle engine in a Mercedes-Benz SLK230 has a compression ratio of 8.8.Part A. What is the ideal efficiency of the engine? Use γ=1.40.
Part B. The engine in a Dodge Viper GT2 has a slightly higher compression ratio of 9.6. How much increase in the ideal efficiency results from this increase in the compression ratio?

Answers

Answer:

58.1%

59.533%

1.433%

Explanation:

$(V_1)/(V_2)$ = Compression ratio

$\gamma$ = Specific heat ratio = 1.4

Efficiency in the Otto cycle is given by

$\eta=1-(1)/(\left((V_1)/(V_2)\right)^(\gamma-1))\n\Rightarrow \eta=1-(1)/(\left(8.8\right)^(1.4-1))\n\Rightarrow \eta=0.581$

The ideal efficiency of the engine is 58.1%

$\eta=1-(1)/(\left((V_1)/(V_2)\right)^(\gamma-1))\n\Rightarrow \eta=1-(1)/(\left(9.6\right)^(1.4-1))\n\Rightarrow \eta=0.59533$

The ideal efficiency of the engine is 59.533%

Increase in efficiency is 59.533-58.1 = 1.433%

If a cart of 4kg mass has a force of 8 newtons exerted on it what is it's acceleration

Answers

Force=mass x acceleration
Data:
mass=4 Kg
Force=8 N

8 N=4 kg * a
a=8 N/4 Kg=2 m/s²

answer: the acceleration is 2 m/s²

If the current in the circuit above is 10 amps and the resistance is 3 ohms, what is the voltage?

Answers

It's really difficult to make out the circuit above. Quite frankly, your
question leaves me to wonder how far 'above' it may be.
The best I can do will be to try and fabricate an answer based on the
information given in the text of the question, augmented only by my own
training, chutzpah, and life experiences.

If the circuit ... wherever it is ... consists entirely of the single 3-ohm
resistance and no other components, and the current through the
resistance is 10 Amperes, then

Voltage = (Current) x (resistance) = 30 volts .

What is the slope of the line if the rise of a line on a distance versus-time graph is 900 meters and the run is 3 minutes?

Answers

Slope = (rise) / (run) = (900 meters) / (3 minutes). / / / Slope = 300 meters/minute or 5 meters/sec.

Rise/run so 900/3 which is 300 i am not sure if i am right but i think thats the answer

Which type of wave requires a medium in which to travel? A) Heat B) Electromagnetic C) Light D) Mechanic

Answers

Answer:

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down. What could be the cause of this?

Answers

Final answer:

A deep draught vessel sailing in a narrow channel can experience a sudden sheer due to squat, which is the downward displacement caused by hydrodynamic forces in shallow water. This can lead to the ship sinking lower in water and potentially losing control. Ship operators should be aware of this phenomenon and take precautions when navigating in narrow channels.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the phenomenon called squat. Squat refers to the downward displacement of a ship caused by hydrodynamic forces when it is sailing in shallow water. As the vessel slows down, the decrease in speed leads to a decrease in the hydrodynamic forces supporting the ship, causing it to sink lower in the water and potentially lose control.

This sudden sheer can be dangerous as it can result in the ship deviating from its intended course and potentially colliding with the channel walls or disturbing other vessels in the vicinity.

It is important for ship operators to be aware of this phenomenon and take necessary precautions when navigating in narrow channels, such as maintaining a safe speed and keeping a proper distance from the channel walls.

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Final answer:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel. When the channel narrows, there is a pressure difference which results in a net force on the fluid. This net force causes the vessel to experience a sudden sheer as it slows down.

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Older auto-focus cameras sent out a pulse of sound and measured the time interval required for the pulse to reach an object, reflect off of it, and return to be detected. Can air temperature affect the camera's focus? New cameras use a more reliable infrared system.

If the potential energy and the kinetic energy are not the same, where did the leftover energy go?

Which behavior of light makes it possible for you to see a spectrum of colors in a spray of water on a sunny day? diffusion