Physics Help. Ink droplets in an inkjet printer are ejected horizontally at 12 m/s, and travel a horizontal…?
Ink droplets in an inkjet printer are ejected horizontally at 12 m/s, and travel a horizontal
distance of 1.0 mm to reach the paper.
a) How long will it take the ink droplets to reach the paper?
b) How far will they drop in this time?
Answers:
a) 8.33 x 10 sec b) 3.40 x 10m
Help please. Thanks.
a) speed = distance / time
12 = 0.001 / t
t = 0.001 / 12
t = 8.33 * 10^-5 s to three significant figures.
b) s = ut + 0.5at
s = 0 + 0.5*9.8*8.33*10^-5
s = 3.40 * 10^-8 m to three significant figures.
That’s a time of 83.3 microseconds, and a drop of 34.0 nanometres.
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