Author Question: A visual defect wherein a person can see distant objects clearly but not nearby objects is called ... (Read 111 times)

james0929 · **on:** Jul 28, 2018

A visual defect wherein a person can see distant objects clearly but not nearby objects is called
a. dispersion.
b. destructive interference.
c. farsightedness.
d. nearsightedness.

Question 2

Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling relative to their own ship?
a. 0.36 c
b. 0.60 c
c. 0.64 c
d. 0.80 c
e. 1.25 c