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Zielflug [23.3K]
3 years ago
10

The nuclei of large atoms, such as uranium, with 92 protons, can be modeled as spherically symmetric spheres of charge. the radi

us of the uranium nucleus is approximately 7.4×10−15m . part a what is the electric field this nucleus produces just outside its surface? express your answer using two significant figures.
Physics
2 answers:
Hitman42 [59]3 years ago
6 0
The formula for the electric field is written below:

E = kQ/d²
where
k is the Coulomb's Law constant = 9×10⁹ N
Q is the total charge
d is the distance of the object from the center

The charge of each proton is +1.6×10⁻¹⁹ C. So,
Q = 92(+1.6×10⁻¹⁹ C) = 1.472×10⁻¹⁷ C
So,

E = (9×10⁹ N)(1.472×10⁻¹⁷ C)/(<span>7.4×10</span>⁻¹⁵<span>m)</span>²
<em>E = 2.42×10²¹ N/C</em>
natali 33 [55]3 years ago
5 0
Total number of Photons = 92. 
Radius of the Nucleus = 7.4 x 10^-15 m 
Charge of the nucleus = 1.6*10^-19. 
Total charge q = 92 x 1.6*10^-19 = 147.2 x 10^-19 
k = 9 x 10^9 N m^2 / C^2 
Electric field charge E = kq / r^2 
=> E = (9 x 10^9 x 147.2 x 10^-19) / (7.4 x 10^-15) ^2  
=> (1324.8 x 10^-10) / 54.76 x 10^-30 => 24.19 x 10^20 N/C
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