Peter took a selfie in his room. He was a wearing a light blue shirt. But he failed to realize that that shirt would clash in color with the light blue walls in his room. He wants to edit this photo using editing software. Which tool can Peter use to darken the background in his photo?

A1-megabit computer memory chip contains many 27 ff capacitors. each capacitor has a plate area of 3.09 × 10−11 m 2 . determine the plate separation of such a capacitor (assume an empty parallel-plate configuration). the characteristic atomic diameter is 10−10 m = 1 ˚a, and the permittivity of a vacuum is 8.8542 × 10−12 c 2 /n · m2 . answer in units of ˚a.