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Question
A 5.0-kg crate is resting on a horizontal plank. The coefficient of static friction is 0.50 and the coefficient of kinetic friction is 0.40. After one end of the plank is raised so the plank makes an angle of 25°with the horizontal, the force of friction is:
A) 0 N
B) 20 N
C) 21 N
D) 22 N
E) 44 N
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Q:
In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:
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Q:
In a photoelectric effect experiment at a frequency above cut off, the number of electrons ejected is proportional to:
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Q:
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Q:
Pi mesons at rest have a half-life of T.If a beam of pi mesons is traveling at a speed of, the distance in which the intensity of the beam is halved is:
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Q:
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5) decrease the separation between the slits
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Q:
The resolving power of a telescope can be increased by:
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Q:
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Q:
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