I almost have the answer to this one, but the computer wants me to check by sig

Question

I almost have the answer to this one, but the computer wants me to check by sig figs and rounding. IDK what's wrong.

A 1.0 cm × 1.0 cm parallel-plate capacitor has a 2.0 mmspacing. The electric field strength inside the capacitor is 1.3×105 V/m .

Part A

What is the potential difference across the capacitor?

Express your answer using two significant figures.

260V

(this is what I got, and it's correct)

Part B

How much charge is on each plate?

Enter your answers numerically separated by a comma. Express your answer using two significant figures.

The answers I tried are as below. Supposedly answer 4 was close, but answer 5 was incorrect. Any suggestions?

?V =

260V

(this is what I got, and it's correct)

ANSWER 4: q1, q2 = 1.15.10 10.1.15.10 10 C Term 1: Very close. Check the rounding and number of significant figures in your final answer Term 2: Very close. Check the rounding and number of significant figures in your final answer ANSWER 5: 9-Y2 = 1.2-10 10.1.2.10 10

Explanation / Answer

given are

1.0 cm × 1.0 cm

Area of plate=1.0 cm × 1.0 cm=1cm^2

Area of plate=1*10^-4m^2

d=2mm=2*10^-3m

E= 1.3×105 V/m

V=Ed

V=1.3×10^5*2*10^-3

V=2.6*10^2

V=260Volts

b) C=0A/d, where 0 is the vacuum permittivity constant = 8.85x10^-12 C^2/Nm^2, and C=Q/V,

C= 8.85x10^-12*1*10^-4/2*10^-3

C=4.425*10^-13 F

C=qV

4.425*10^-13=q*260

0.017*10^-13C=q--answer to second part

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