the camera to the object is 40 ns. How far from the object is the camera?

1 ⤊

A 1 m E 8 m
B 2 m F 10 m
C 3 m G 12 m
D 6 m H 15 m

2007-05-14 20:06:22 · 2 answers · asked by bud1658 2 in Science & Mathematics ➔ Physics

the speed of light is 3*10^8 m/s

distance = speed*time
= 3*10^8*40*10^-9
=120*10^-1
=12 m
so answer is G, 12 m

2007-05-14 20:14:23 · answer #1 · answered by dipakrashmi 4 · 1⤊ 0⤋

distance d =ct
c speed of light =3*10^8 t= 40*10^-9

so d= 120*10^-1=12m

answer G

2007-05-14 21:48:43 · answer #2 · answered by maussy 7 · 0⤊ 1⤋