Question

Problem1.

A) Whichis larger, the gravitation attractionbetween an electron and aproton separated by a dis-

tance d or the electricattraction between anelectron and a proton separated by adistanced?Justify

your answer by forming aratio of the sizesof the twoforces.

B) Giventhe answer to part A), why is thegravitational force between theearth and a falling eraser

greaterthan the electric force between the earthand the fallingeraser?

C)Compare the size of the gravitational force on aneraser resting onthe floor with the electric force

that thefloor exerts on the eraser.