Which statement accurately describes static electricity? O A. It is caused by positively and negatively charged particles
gathered together.
B. It is caused by positively charged particles that flow.
c. It is caused by only negatively charged particles on a surface.
D. It is caused by separated positively or negatively charged
particles.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.