What would cause the force of kinetic friction to increase? a. a decrease in the normal force b. an increase in u s c. an increase in the normal force d. a decrease in u k

If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?