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Physics 18 Online
OpenStudy (anonymous):

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

OpenStudy (anonymous):

I only have 3 left after this please help

OpenStudy (fifciol):

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

OpenStudy (anonymous):

hmmm

OpenStudy (anonymous):

what do I plug into the top

OpenStudy (anonymous):

I hate math...:/

OpenStudy (fifciol):

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

OpenStudy (anonymous):

I got 1

OpenStudy (anonymous):

but that was GCF

OpenStudy (anonymous):

then I got 1.25 but there is no 1.3

OpenStudy (anonymous):

please help i have 5 minutes left please

OpenStudy (anonymous):

i went with 1.2 x 10^3

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