In a head-on collision between two vehicles, is there a force acting on the persons in the car that propels them toward the windshield? explain why or why not.

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons