friction depends upon --
1. nature of d 2 surfaces in contact
2. force pressing d 2 surfaces together It do not depend upon surface area and relative motion of two objects. Regards
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State one factor on which the magnitude fo a non-contact force depends. How does it depend on the factor stated by you?
State three factors on which the resistance of a wire depends. Explain how does the resistance depend on the factors stated by you.
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