7. A metal ball with a charge of -8 nC contacts a second metal ball and loses half its excess electrons. What force does the second metal ball exert on a proton 6 m away?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Ineed the answer to question 1 , i’m desperate

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon