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r-ruslan [8.4K]
3 years ago
12

A force can exist between two charged particles or objects even if they're as small as subatomic particles. Between which of the

se would no force exist?
Select one:
a. Proton-proton
b. Neutron-proton
c. Electron-electron
d. Proton-electron
Physics
2 answers:
aev [14]3 years ago
7 0
I think it is a not sher
Mrrafil [7]3 years ago
7 0

The force between particles can be an electrical force because of their charges, and a gravitational force because of their masses.

Protons, neutrons, and electrons all have mass, so all of the choices (a, b, c, d) have gravitational forces between them.

Neutrons don't have any electrical charge, so there's no electrical force in choice-b .

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The magnitude of the electric field for 60 cm is 6.49 × 10^5 N/C

R(radius of the solid sphere)=(60cm)( 1m /100cm)=0.6m

Q\;(\text{total charge of the solid sphere})=(26\;\mathrm{\mu C})\left(\dfrac{1\;\mathrm{C}}{10^6\;\mathrm{\mu C}} \right)={26\times 10^{-6}\;\mathrm{C}}

Since the Gaussian sphere of radius r>R encloses all the charge of the sphere similar to the situation in part (c), we can use Equation (6) to find the magnitude of the electric field:

E=\dfrac{Q}{4\pi\epsilon_0 r^2}

Substitute numerical values:

E&=\dfrac{24\times 10^{-6}}{4\pi (8.8542\times 10^{-12})(0.6)}\\ &={6.49\times 10^5\;\mathrm{N/C}\;\text{directed radially outward}}}

The spherical Gaussian surface is chosen so that it is concentric with the charge distribution.

As an example, consider a charged spherical shell S of negligible thickness, with a uniformly distributed charge Q and radius R. We can use Gauss's law to find the magnitude of the resultant electric field E at a distance r from the center of the charged shell. It is immediately apparent that for a spherical Gaussian surface of radius r < R the enclosed charge is zero: hence the net flux is zero and the magnitude of the electric field on the Gaussian surface is also 0 (by letting QA = 0 in Gauss's law, where QA is the charge enclosed by the Gaussian surface).

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Water boiling is an example of a physical change. The rest are chemical changes.  
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