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A wheel of diameter 3.0 cm has a 4.0-m cord wrapped around itsperiphery. Starting from rest, the wheel is given a constant angular acceleration of 2.0 rad/s2.The cord will unwind in: 0.82 sB. 2.0 sC. 8.0 sD. 16 sE. 130 s
In gravity-free interstellar space, a spaceship fires itsrockets to speed up. Th rockets are programmed to increase thrustfrom zero to 1.00x10^4 N with a linear increase over the course of18.0km.
A 1650-kg car is traveling at 34 m/s. How fast must a 91 kg bicycle and rider be traveling to have the same kinetic energy as the car.
A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage difference if charged by static electricity, What is the capacitance of the empty shelves if they have area 0.7 × 103 cm2
At what driving frequency fd do two phasors have the same length? At that driving frequency, what are (c) the phase angle in degrees, (d) the angular speed at which the phasors rotate, and (e) the current amplitude?
If a circular wire loop of radius 10 were held in this magnetic field, what current would be induced in the loop
A long solenoid consists of 1600 turns and has a length of 0.55 m.The current in the wire is 0.41 A. What is the magnitude of the magnetic field inside the solenoid?
a very long solid cylinder of radius r 4 cm has a uniform volume charge density ?a. how much total charge is contained
A spaceship in distress sends out two escape pods in opposite directions. One travels at a speed v1 = 0.60c in one direction, What speed does the first escape pod measure for the second escape pod
In a house the temperature at the surface of a window is 23°C. The temperature outside at the window surface is 4°C. What is the temperature at the outside window surface
A certain ac signal at 60 Hz is applied across a 40-mH inductor and a 200-? resistor. What is the power factor of this circuit
A golfer wishes to chip to a hole 50m away on flat levelground. If the fall sails off at 45 degrees, what speed must it have initallly
A mass m1 = 5.4 kg rests on a frictionless table and connected by a massless string to another mass m2 = 4 kg, How much work is done by the force F on the two block system
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