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A girl pulls a sled with a force of 15 N over a distance of 3 m. What is the kinetic energy of the sled after she pulls it?
In a certain RLC circuit, the RMS current is 5.27 A, the RMS voltage is 228 V, and the current leads the voltage by 52.1degrees. What is the total resistance of the circuit
Two equal but oppositely-charged particles are placed 1.00 m away from each other. determine the charge on each particle
A 35.0 kg person crawls across a 15.0 m long horizontal beam that has a mass of 15.0 kg. The beam has a support line that is at an angle of 65 degrees up from the horizontal.
at what speed must an object be moving in order that it haskinetic energy 1.50 times its rest energy
Two capacitors (C1 = 7.9 uF, C2 = 15.7 uF) are charged individually to (V1 = 15.7 V, V2 = 4.5 V). Calculate the final potential difference across the plates of the capacitors once they are connected
A small spherical insulator of mass 8.00 x 10-2 kilograms and a charge 0.600 uC is hung by a thin wire of negligible mass. Find the angle
A 4.97-g bullet is shot through a1.02-kg wood block suspended on a string2.00 m long. The center of mass of the block rises a distance of0.49 cm. Find the speed of the bullet asit emerges from the block if its initial speed is 404 m/s.
Show that with equal values for the object and image distances (Do=Di), they must both be equal to twice the focal length: Do=Di=2f. What is the predicted magnification
explain why a capacitor acts as a short circuit at high angular frequencies and as an open circuit at low angular
A scientist changes the frequency of an incident X-ray to 4.50e19 Hz and measures the deflected X-ray frequency of 4.32e19 Hz. What was the angle of deflection
hearing damage may occur when a person is exposed to a sound intensity level of 90.0 db relative to the threshold of
A solid marble, a solid disk and a hoop have the same mass (M = 0.9 kg) and the same radius. Each object is held at rest at the same height and then released. what is the force the track exerts on the hoop
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