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velikii [3]
3 years ago
9

Why did John Dalton describe atoms as solid spheres, and did he think all spheres were the same?

Physics
1 answer:
Ray Of Light [21]3 years ago
8 0
Go here to get some help now a=can you help me i posted it on your profile


 https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-struct...
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A particle has a charge of -4.25 nC.
SpyIntel [72]

Answer:

-611.32 N/C

0.43723 m

Explanation:

k = Coulomb constant = 8.99\times 10^{9}\ Nm^2/C^2

q = Charge = -4.25 nC

r = Distance from particle = 0.25 m

Electric field is given by

E=\dfrac{kq}{r^2}\\\Rightarrow E=\dfrac{8.99\times 10^9\times -4.25\times 10^{-9}}{0.25^2}\\\Rightarrow E=-611.32\ N/C

The magnitude is 611.32 N/C

The electric field will point straight down as the sign is negative towards the particle.

E=\dfrac{kq}{r^2}\\\Rightarrow r=\sqrt{\dfrac{kq}{E}}\\\Rightarrow r=\sqrt{\dfrac{8.99\times 10^9\times 4.25\times 10^{-9}}{13}}\\\Rightarrow r=1.71436\ m

The distance from the electric field is 1.71436 m

4 0
3 years ago
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What percent of the world lumber harvest goes to paper production<br> 10%<br> 20%<br> 25%<br> 50%
sergejj [24]
The answer is 50% of the paper production
8 0
3 years ago
An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom
zubka84 [21]

<span>Chromium is represented by the element Cr with an atomic number of 24 and a molar mass of 52 gram per mole. The number of protons in the Chromium atom is the atomic number, so it has 24 protons. And the protons of chromium atom is equal to the number of electrons, so 24 electrons.</span>

4 0
2 years ago
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PLEASE HELP ASAP URGENT!!!!!
coldgirl [10]

Answer:

B

i am not fully sure but i believe its the most accurate its either A or B

5 0
3 years ago
How does heat travel between objects that are not touching each each another
skad [1K]
Through heat waves I'm pretty sure
8 0
3 years ago
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