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sesenic [268]
4 years ago
13

Why is the gravitational force usually ignored in problems involving particles such as electrons and protons?

Physics
1 answer:
Studentka2010 [4]4 years ago
4 0

Answer:

Because the mass of electrons and protons is very small

Explanation:

The gravitational force exerted between two objects is given by:

F=G\frac{m_1 m_2}{r^2}

where

G=6.67 \cdot 10^{-11} m^3 kg^{-1} s^{-2} is the gravitational constant

m1 and m2 are the masses of the two objects

r is the distance between the two objects

The mass of a proton and of an electron is very small, so the gravitational force involved in case of such particles is very weak. Let's calculate for example the gravitational attraction between one proton and one electron at a distance of r = 1 m. We have:

- Proton mass: m_1 = 1.67 \cdot 10^{-27}kg

- Electron mass: m_2 = 9.11\cdot 10^{-31}kg

So, the gravitational force between the two particles is:

F=(6.67\cdot 10^{-11} m^3 kg^{-1} s^{-2})\frac{(1.67\cdot 10^{-27}kg)(9.11\cdot 10^{-31} kg)}{(1 m)^2}=1.01\cdot 10^{-67}N

Which is a very weak force.

By comparison, let's calculate instead the electromagnetic force between a proton and an electron (both having a charge of q=1.6\cdot 10^{-19}C) still separated by a distance of r = 1 m. We have:

F=k\frac{q_1 q_2}{r^2}=(9.0\cdot 10^9 Nm^2C^{-2})\frac{(1.6\cdot 10^{-19}C)(1.6\cdot 10^{-19}C)}{(1 m)^2}=2.3\cdot 10^{-28}N

Which we see is much stronger than the gravitational force (almost by a factor 10^{40}

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gregori [183]

Answer:

Explanation:

See the file attached .

b ) Range of projectile

= u²sin2θ / g

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c )

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6 0
3 years ago
What would be the resulting charge of carbon (C) after this element loses four electrons?
Sladkaya [172]

Answer:

Carbon will become positively charged.

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Explanation:

The charge of Carbon will be +4.

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7 0
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frez [133]
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5 0
3 years ago
A person is drinking a glass of soda with ice.
prisoha [69]

The relative kinetic energy of molecules in the soda is least energy and above the soda in the glass is greatest energy.

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Also, relative kinetic energy of gas molecules increases with in the temperature of the gas molecules and decreases with a decrease in the temperature of the of the gas molecules;

ΔK.E ∝ T

The ice in the soda lowers the temperature of the gas molecules, thereby reducing their average speed which in turn reduces the average kinetic energy of the gas molecules in the soda.

Above the soda in the glass, the concentration of the gas molecules is less and their mean distance is greatest when compared to inside the soda. This results to an increase in the speed of the gas molecules which increases their average kinetic energy.

Thus,  the relative kinetic energy of molecules in the soda is least energy and above the soda in the glass is greatest energy.

Learn more about temperature and kinetic energy here: brainly.com/question/305606

3 0
3 years ago
How do I find the approximate velocity of "the object", on the graph at 5 seconds?
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First, foremost, and most critically, you must look at the graph, and critically
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Without that ability ... since the graph is nowhere to be found ... I am hardly
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7 0
4 years ago
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