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A 500 uF capacitor is charged to 290 V. Then a wire is connected between the plates. How many joules of thermal energy are produced as the capacitor discharges if all of the energy that was stored goes into heating the wire?
A standing observer perceives a train whistle to have a frequency of 300 Hz. compute the frequency of the sound waves emitted from the train
A wheel experiences a time dependant angular acceleration given by ?(t) = 3 + 0.333t^3. Derive an expression for the angular velocity as a function of time
A student sits on a rotating stool holding two 3.6-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
At rest, a car's horn sounds at a frequency of 385 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the similar direction with one-third the car's speed hears a frequency of 342 Hz. What is the speed of the ca..
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
A series AC circuit contains a resistor, an inductor of 240 mH, a capacitor of 4.80 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. Calculate the capacitive reactance
A block of weight 43.6 N is hanging from a rope. The tension from the rope is pulling upward on the block. What is the magnitude of the tension in the rope
A 55.5 kg ice skater is moving at 3.99 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. What is the ratio of this force to her weight
Three successive resonance frequencies for a certain string are 481., 518., and 555. Hz. What is the fundamental frequency
Find out the magnitude of its average acceleration between those points. Find the direction of its average acceleration between those points.
A ball is shot from the top of a building with an initial velocity of 20 m/s at an angle ? = 44° above the horizontal. If a nearby building is the same height and 55 m away, how far below the top of the building will the ball strike the nearby build..
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 6.8 m/s right before entering the wood. The mass of the nail is .06kg. what is the average force on the nail by the wood
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