In the figure below an electron is shot directly toward the center of a large metal plate that has surface charge density -2.80 × 10-6 c/m2. if the initial kinetic energy of the electron is 4.80 × 10-17 j and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?

answer: 0.20

explanation: this can only be the answew because all the other measuremnets are not close

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

the answer to this is proletariats.

hope this : )

higher potential

explanation:

because it is in a high speed so it must move into a of high potential