ap03baller
30.11.2020 •
Physics
A block slides down a 30.0 degree inclined plane at an acceleration of 2.0 m/s^2. What is the coefficient of friction between the block and the inclined plane? Use g=10.0 m/s^2
A) .20
B) .25
C) .30
D) .35
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Ответ:
D) .35
Explanation:
m = Mass of block
g = Acceleration due to gravity =
= Angle of inclination =
a = Acceleration of block =
= Coefficient of friction between the block and the inclined plane
f = Frictional force =
As the forces are conserved in the system we have
The coefficient of friction between the block and the inclined plane is 0.35
Ответ:
B. cornea,
C. iris, and
E. pupil