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A turntable is switched from 4.71 rad/s (45rpm) to 3.49 rad/s(331/3) and the platter rotates through an angle of 11.5 rad inreaching the new angular speed. What is angular accelerationof the platter?
What is the kinetic energy of a 1,500 kg car with velocity of 72.0 km/hr? How much work must be done on the car to bring it to a complete stop.
A circuit consists of a 259- resistor and a 0.260-H inductor. Determine the phase angle between the current and the voltage of the generator. Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise
Two cars, starting from rest, begin thier trips to a mutual meeting point at the same time. Car A travels true east , and accelerates at 6m/s^2, For how long had each car been traveling
A ball is thrown horizontally from the top of a 55 m building and lands 105 m from the base of the building, How long is the ball in the air in seconds
A 370-kg sailboat has an acceleration of 0.87 m/s2 at an angle of 64° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2 = +3.84C. What is the distance r between the two charges
For a mass spectrometer the magnetic field is varied to allow ions of varying mass to reach the detector. A different method would be to maintain a constant magnetic field and vary the accelerating potential difference of V.
A car travels east at 100 km/h for 0.8 h. It then travels 30.0° east of north at 127 km/h for 1.5 h. What is the average velocity for the trip
A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N. The only other significant force on his forearm come from the biceps muscles (which acts perpendicularly to the forearm) and the forces at the elbow. If the biceps produce a ..
A force Farrowbold applied to an object of mass m1 produces an acceleration of 3.10 m/s2, What is the value of the ratio m1/m2
A 1200 kg automobile is moving at 30 m/s at a height of 5.0m above the bottom of a hill when it runs out of gasoline. what is the speed of that car at the lowest point
Calculate the conduction rate of heat H=deltaQ/deltaT through an A=2.0 m^2 glass window of the thickness of the glass is 4 mm and the temperature difference between the inside and the outside is 20 degree celsisus
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