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3 years ago

8

Sue observes a clear plastic, millimeter ruler under low power of her microscope. She sees three divisions of the ruler. What wo

uld be the field diameter of Sue’s microscope on low power? (in micrometers ('µm')

1 answer:

love history [14]3 years ago

4 0

field of view

3mm = 3x10^-3m

1 micron = 10^-6m

so there are 3x10^-3/10^-6 microns in 3mm

=3000microns

for the area, pi D^2 => 3X2999^^2 sq microns => 27000 sq microns

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Answer:

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Known information:

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We replaced the known information in the equation(1):

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Newton's first law

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Friction force calculation (Ff):

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μk kinetic coefficient of friction

We know that μk = 0.373and N= 21854N ,then:

$Ff=0.373*21854$

$Ff=8151.54 N$

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$sum Fx= mc*ac$

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