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anyanavicka [17]
3 years ago
10

Which of the following would demonstrate an attraction between magnetic poles?

Physics
2 answers:
Korolek [52]3 years ago
8 0

Answer: The correct answer is C: North pole to a south pole.

Explanation: Opposite poles attract each other while alike poles repel one another.

hope this helps (:

vredina [299]3 years ago
5 0
"C. north pole to a south pole" would demonstrate an attraction between magnetic poles, since in the field of magnetics, opposites attract and similar forces repel one another. 
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Answer:0.27

Explanation:

Given

One worker Pushes with force F_1=430 N

other Pulls it with a rope of rope F_2=360 N

mass of crate m=290 kg

both forces are horizontal and crate slides with a constant speed

Both forces are in the same direction so Friction will oppose the forces and will be equal in magnitude of sum of two forces because crate is moving with constant speed i.e. net force is zero on it

f_r=F_1+F_2

where f_r is the friction force

f_r=430+360

f_r=790 N

f_r=\mu N

where \muis the coefficient of static friction

N=mg

790=\mu 29\cdot 9.8

\mu =0.27

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