How much work does the electric field do in moving a proton from a point with a potential of +175 v to a point where it is -55 v ? express your answer in joules?

as per the question the proton is taken from the point of 175 volt to the point of -55 volt.

the work done in case of electric filed is given as

where Vab is the potential difference between two points.

Vab =Va-Vb

       =175-[-55]volt

        = 230 volt

the charge of proton is

hence the work done will be-

      W=230 volt ×

         =368.46 joule [ans]

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)