according to einstein's theories of relativity name two ways that someone else's time can flow at a different rate compared to your time?

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves