Which of the following determines  whether light shining on a metal surface  will eject electrons from that surface? a. the intensity of the light b. the frequency of the light c. the angle of incidence of the light d. the amount of time the light  shines on the surface

Which of the following would not be taken into consideration when describing the quality of a sound

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Which two particles are found in the center of an atom