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How much work is required to bring three protons, initially infinitely far apart, to a configuration where each proton is 1.3 10-15 m from the other two? (This is a typical separation for protons in a nucleus.)
A ball of mass .05 kg moves with a velocity (17, 0, 0) m/s. It strikes a ball of mass .1 kg that is initially at rest. cWhat is the velocity of the lighter ball after impact
Explain how fast would it be moving after it had fallen a distance of 0.010 m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
A When the magnetic flux through a single loop of wire increases by 30 Webers, a current of 40.0 A is induced in the wire. over what time did the flux change
The current in a coil drops from 3.4 A to 2.8 A in 0.51 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
A parallel-plate capacitor is charged to an electric potential of 285 V by moving 3.20×10^16 electrons from one plate to the other
(a) compute the absolute pressure at the bottom of a freshwater lake at a point whose depth is 25.5 m. assume the density of the water is 1.00 x10^3 kg/m3 and the air above is at the pressure of 101.3 kPa.
If the coefficient of kinetic friction between a 35.0 kg crate and the floor is 0.25, what horizontal force is required to move the crate at a steady speed across the floor
The initial speed of a cannon ball is 0.20 km/s. what is the minimum time of flight for the ball
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffic..
A pulsar is a rapidly rotating neutron star. The Crab Pulsar is located in the Crab Nebula in the constellation Taurus. Find the pulsar's angular velocity
A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a radius of 25 cm. Find the average electrical power dissipated in the process
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. calculate the magnitude of the force on the charge
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