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A piece of machinery with a momentum of inertia of 2.6 kg m2 rotates with a constant angular speed of 4.0radians/second when a frictional torque of 0.56 mN acts on it. What is the net torque acting on the piece?
a spring with a spring constant k is hung vertically. a mass m is attached to it and released in such a way that the
An electron moves from the initial position r = (0.1m)I to final position r=(0.2m)j. what is the surface charge density (i.e. charge per area) on the inner surface of the conducting sphere
An interference filter has an effective bandwidth of 10 nm. Would it be feasible to employ such a filter to isolate the calcium emission line at 422.7 nm from the potassium emission line at 404.4 nm? Assume that the signals are triangular in shape. S..
An automobile of mass 1500 kg moving at 25 m/s colides with a truck of mass 4500 kg at rest. What is the final velocity of the truck after the collision
Two traveling waves, 1 and 2, are described by the equations below. Which one has the largest maximum displacement
a point charge of -2.00 muc is located in the center of a spherical cavity of radius 6.50 cm inside an insulating
A laser beam enters a 18.5 cm thick glass window at an angle of 38.0° from the normal. The index of refraction of the glass is 1.46. At what angle from the normal does the beam travel through the glass? How long does it take the beam to pass through ..
A proton traveling with a velocity of 6.20x10^6 m/s in the positive x direction encounters a uniform 0.25 magnetic field in the positive y direction
Calculate the speed of a proton that is accelerated from rest through an electric potential difference of138V. Calculate the speed of an electron that is accelerated through the same potential difference.
A pair of speakers separated by 0.700 m is driven by the same oscillator at a frequency of 655 Hz. How far must the observer walk before reaching a relative maximum in intensity
If 16 students lift a car . While holding the car off the ground, each person exerts an upward force of 400 N. What is the weight in pounds
at the start of a trip a driver adjusts the absolute pressure in her tires to be 2.85e5 pa when the outdoor temperature
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