The city council is discussing whether or not to put fluoride in the city's water supply. Many other towns add it already, but y
1 answer:
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Answer:
(a)
(b)
(c)
Explanation:
(a)
Given:
Charge on sphere (Q) =
Radius of sphere (R) = 11.0 cm = 0.110 m
Distance from the center (r) = 5 cm = 0.05 m
Coulomb's constant (k) =
Now, we know from Gaussian law for uniform charged spheres, the electric field at a distance 'r ≤ R' from the center of sphere is given as:
Plug in the given values and solve for 'E'. This gives,
(b)
Given:
Charge on sphere (Q) =
Radius of sphere (R) = 11.0 cm = 0.110 m
Distance from the center (r) = 10 cm = 0.10 m
Now, we know from Gaussian law for uniform charged spheres, the electric field at a distance 'r ≤ R' from the center of sphere is given as:
Plug in the given values and solve for 'E'. This gives,
(c)
Given:
Charge on sphere (Q) =
Radius of sphere (R) = 11.0 cm = 0.110 m
Distance from the center (r) = 50 cm = 0.50 m
Now, we know from Gaussian law for uniform charged spheres, the electric field at a distance 'r > R' from the center of sphere is given as:
Plug in the given values and solve for 'E'. This gives,