physics
posted by ashley  HELP PLEASEE!!! on .
The capacitance of a capacitor is 10 μF. The distance between the plates is made half and area is doubled. The capacitance of the capacitor will now be:
i think its 20 im not sure tho

No. Capacitance is proportional to A/d.
A doubles and d is reduced by half.
Both changes have the effect of doubling the capacitance.
Try again.
What happens when you double something twice? 
so its 40?