Alice and tom dive from an overhang into the lake below. tom simply drops straight down from the edge, but alice takes a running
1 answer:
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The work done by the electric field in moving a charge is the negative of the potential energy difference between the two locations, which is the product between the magnitude of the charge q and the potential difference 
:
The proton charge is
, and the two locations have potential of 
and 
, therefore the work is
The proton charge is
Answer:
e.)At twice the distance, the strength of the field is E/4.
Explanation:
The strength of the electric field at a certain distance from a point charge is given by:
where
k is the Coulomb's constant
Q is the charge
r is the distance from the point charge
In this problem, the distance from the point charge is doubled:
r' = 2r
So the new electric field strength is
so, at twice the distance the strength of the field is E/4.