A sphere has a charge of -6.40 x 10-7 coulomb. Approximately how many electrons must be removed to make the sphere neutral? a. 2.50 x 10-13 c. 4.00 x 1012
b. 1.60 x 1012 d. 7.03 x 1024

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field