Question

A test charge is placed at a distance of 2.0 × 10-1 meters from a charge of 5.4 × 10-8. What is the electric field at the test charge? (k = 9.0 × 109 newton·meter2/coulomb2)
Select one of the options below as your answer:

A.
1.0 × 10-2 newtons/coulomb
B.
1.2 × 103 newtons/coulomb
C.
2.5 × 104 newtons/coulomb
D.
3.5 × 10-1 newtons/coulomb
E.
5.4 × 10-8 newtons/coulomb

Answer 1

I only have 3 left after this please help

Answer 2

\[E=\frac{ kq }{r^2 }=12 *10^3\]

Answer 3

hmmm

Answer 4

what do I plug into the top

Answer 5

I hate math...:/

Answer 6

\[\frac{ 9*10^9*5,4*10^{-8} }{ 4*10^{-2} }\]

Answer 7

I got 1

Answer 8

but that was GCF

Answer 9

then I got 1.25 but there is no 1.3

Answer 10

please help i have 5 minutes left please

Answer 11

i went with 1.2 x 10^3