A plastic ball with a charge of +1.0 C is brought near another ball with a charge of
-2.0 C. The balls are let go so that they are free to move. What happens?
a. The balls move apart because they exert equal repulsive forces on each other.
b. Nothing. Both balls stay exactly where they are.
c. The negatively charged ball does not move, but the positively charged ball starts
to move toward it because of an attractive force.
d. The balls both start moving toward each other because they exert equal
attractive forces on each other.
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Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
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As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "
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A plastic ball with a charge of +1.0 C is brought near another ball with a charge of
-2.0 C. The ba...
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