Adita lifts a book from the floor, carries it across the room, and places it on a high shelf. when is adita doing work on the book? she does work on the book at no time during this process. she does work only while she carries the book across the room. she does work from the moment she touches the book until she lets it go. she does work as she picks up the book and as she lifts it to the shelf.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.