Author Question: The distance between the two planets is 1.6 106 m. How much time would the light signal take to go ... (Read 55 times)

viki · **on:** Jul 27, 2018

The distance between the two planets is 1.6 106 m. How much time would the light signal take to go from one planet to the other?

A) 1.9 10-2 s
B) 0.45 10-2 s
C) 0.53 10-2 s
D) 1.3 10-2 s
E) None of the other answers is correct.

Question 2

A seesaw made of a plank of mass 10.0 kg and length 3.00 m is balanced on a fulcrum 1.00 m from one end of the plank. A 20.0-kg mass rests on the end of the plank nearest the fulcrum.

What mass must be on the other end if the plank remains balanced? A) 6.67 kg
B) 7.50 kg
C) 10.0 kg
D) -10.0 kg
E) 5.00 kg