Consider two points in an electric field. The potential at point 1, V1, is 36 V. The potential at point 2, V2, is 196 V. An electron at rest at point 1 is accelerated by the electric field to point 2. Part (a) Write an equation for the change of electric potential energy U of the electron in terms of the symbols given.
Part (b) Find the numerical value of the change of the electric potential energy in electron volts
Part (c) Express v2, the speed of the electron at point 2, in terms of dU, and the mass of the electron me.
Part (d) Find the numerical value of v2 in m/s.

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?