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A battery's potential is measured to be 9 V outside of a circuit, the battery is placed in a circuit and it delivers 0.2 A of current. The potential of the battery is measured in the circuit and it has dropped to 6.6 V, what is the internal resistance of the battery?
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.70 N is applied. A 0.490-kg particle rests on a frictionless horizontal surface, What is the amplitude of the motion
A 102g Frisbee is 25cm in diameter and has half its mass spread uniformly in the disk and the other half concentrated in the rim. What is the Frisbee's rotational inertia
Consider an unpolarized lightwave incident from air onto a planar dielectric material of index of refraction 1.50. Calculate the degree of polarization of the transmitted beam in part b above
If a force vector has a magnitude of 2.61 newtons and points 64.5 degrees south of east, then what is its x-component?
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
A proton moves at 7.50 X 10 ^7 m/s, perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius 0.800m.
Suppose that a simple pendulum consists of a small 58.0 g bob at the end of a cord of negligible mass. What is the pendulum's length
A 1200 kg car moving north at 27 m/s is struck by a 2165 kg car moving east at 11.0 m/s. The cars are stuck together. How fast and in what direction do they move at once after the collision.
The water in a atank is at a gauge pressure of 190,000 Pa. what is the force on the bottom of the tank
A block of wood, with density 780 kg/m3 has a cubic shape with sides .0330 m long. What is the mass of the lead
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
A 3.80-kg cylindrical rod of length 2.00 m is suspended from a horizontal bar so it is free to swing about that end. What is the angular velocity of the rod immediately after the collision
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