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Two tiny, spherical water drops, with equal charges of -4.00 x 10-17 C, have a center-to-center separation of 1.4 centimeter.
(a) Find the magnitude of electrostatic force acting between them?
N
(b) Find how many excess electrons are on each drop, giving it its charge imbalance?
electrons
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket. What power P is dissipated in the resistor
q1. a dockworker applies a constant horizontal force of 79.0 to a block of ice on a smooth horizontal floor. the
Collisions between atomic and subatomic particles are usually perfectly elastic. Find the magnitude of the velocity of the alpha particle after the collision
A circular wire loop of radius is 16.0 cm carries a current of 2.80 A. What is the magnitude of the torque acting on the loop
Sue and Sean are pushing on opposite sides of a 5.0kg box which is on a frictionless surface. What is Sean's force if the box accelerates away from Sue at 2.0m/s^2
A particular engine has a power output of 4.00 kW and an efficiency of 25.0%. Assume the engine expels 7000 J of energy in each cycle. Find the time required to complete each cycle
a sphere of radius r starts from rest and rolls without slipping along a curved surface dropping through a vertical
Light is emitted from an ordinary lightbulb filament in wave-train bursts about 10 ^ -8 s in duration. What is the length in space of such wave trains
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
Uncompressed, the spring for an automobile suspension is 45cm long. It needs to be fitted into a space 36cm long. how much work does a mechanic have to do to fit the spring
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
Through a thunderstorm, 4.7s elapses between observing alighting flash and hearing the resulting thunder. About how far away in kilometres and miles was the lighting flash?
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