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a) An R = 54.9 ? resistor is connected to a C = 28.0 ?F capacitor and to a ?VRMS = 117 V, and f = 133 Hz voltage source. Calculate the power factor of the circuit.
b) Calculate the average power delivered to the circuit.
c) Calculate the power factor when the capacitor is replaced with an L = 0.175 H inductor.
d) Calculate the average power delivered to the circuit now.
A 60 (g} tennis ball with an initial speed of 32 {m/s} hits a wall and rebounds with the same speed. The figure shows the force of the wall on the ball throughout the collision.
a 2 kg block travels around a 0.5m radius circle with an angular speed of 12 rad/s. what is the resulting torque
A 85.6-kg wrecking ball hangs from a uniform heavy-duty chain having a mass of 27.0kg, Find the maximum tension in the chain
a 1.50-uf capacitor charged to 40.0 v and a 2.40-uf capacitor charged to 12.0v are connected to each other, What is the final charge on the 1.50-uf capacitor
q1. a child is sliding on a sled at 1.6 rm ms to the right. you stop the sled by pushing on it for 0.80 rm s in a
A solid, uniform disk of radius 0.250 m and mass 45.1 kg rolls down a ramp of length 5.20 m that makes an angle of 13.1° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
In discharging a capacitor what percentage of the initial potential remains after one time constant has passed? After two times constants? Three times constants
A place kicker should kick a football from a point 35m (about 38.0 yd) from the goal, and the ball should clear the crossbar, which is 3.05 m high. When kicked, ball leaves the ground with a speed of 21.0 m/s at an angle of 55° to the horizontal.
q1. the radius of a circle is measured to be 13.6 plusmn 0.2 m. calculate each of the following and give the
A 3.3-m-diameter merry-go-round with rotational inertia 100kg?m2 is spinning freely at 0.60rev/s. Determine the total energy lost to friction
A circular-motion addict of mass 85 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 5.9 m/s. What is the magnitude of the normal force on the addict from the seat when both go through the highest point of t..
A satellite in Earth orbit has a mass of 106 kg and is at an altitude of 1.94 106 m.(Assume that U = 0 as r ? infinity), What is the potential energy of the satellite-Earth system
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