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Name:
Coulomb's Law
Problems. Show all work.
1.
What is the electric force between an electron and a proton that are separated by a distance of 1.0
´
10
m? Is the force attractive or repulsive? (
e
= 1.60
´
10
C,
k
= 8.99
´
10
N
·
m
/C
)
2.
What is the electric force between a proton and an alpha particle (charge 2
e
) that are separated by a distance of 3.0
´
10
m? (
e
= 1.60
´
10
C,
k
= 8.99
´
10
N
·
m
/C
)
3.
Two equal charges are separated by 3.7
´
10
m. The force between the charges has a magnitude of 2.37
´
10
N. What is the magnitude of
q
on the charges? (
k
= 8.99
´
10
N•m
/C
)
4.
Two point charges having charge values of 2.0
m
C and –4.0
m
C, respectively, are separated by 1.5 cm. What is the value of the mutual force between them? (
k
= 8.99
´
10
N
·
m
/C
)