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Q. An ice block is pushed horizontally on a frictionless surface with initial velocity v0. At some point, it comes to the nearly semicircular bump with a radius R=0.42m and the height h=0.33m above the ground.
a) Indicate with v1 the velocity of the block at the top of the bump. What condition must hold for the block to slip over the semicircular bump without flying away?
b) Compute the maximal value v1max that v1 can have in order to satisfy the condition in a).
c) Does the block fly away at the top of the bump if the initial velocity is v0=2.9m/s?
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
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An electric field is set up between two parallel plates, each of area 2.2 m2, by putting 1.0 C charge on one plate and the -1.0 C charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates ..
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