Answer:
Is the "1 cm deep?" correct? 1 km?? I'll assume cm is correct.
Explanation:
(Velocity)*(Time) = Distance.
We want the time, t.
(1540m/sec)(t) = 1cm
By definition, 1 m = 100cm
Conversion factor: (1m/100cm)
Therefore 1 cm = 0.010 m
(1540m/sec)(t) = 0.010 m
t = (0.010 m)/(1540m/sec))
t = 1.0x10^-2m/(1.54x10^3m/sec)
t = 6.5x10-6 seconds, or 6.5 microseconds
