20a) Which of the following is an electric potential?
A. 2.5 J
B. 2.5 C
C. 2.5 N D. 2.5 V

c

explanation:

i believe the answer is c and this is only worth 10 points you might wanna change it

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

okay i have so many questions. but the big one here is: um wt..f is this mess? ?