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A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.95 rev/s. The disk rotates through 2.25 revolutions before coming to rest. What is the tangential acceleration of a point on the disk 3.55 cm from the axis?
a compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12
A college Student went to an amusement park where they rode a ridecalled the rotor. It is essentially a large, hollow cylinder thatis rotated rapidly around its central axis. What minimum velocity must the cylinder and rider have
A point source of light illuminates an aperture 2.00m away. How wide is the aperture
A 3.0-kg block is traveling in the -x direction at 5.0 m/s, and a1.0-kg block is traveling in the +x diection at 3.0 m/s. (a)find the velocity Vcm of the center of mass.
a plane has an airspeed of 142 ms. a 16.0 ms wind is blowing southward at the same time as the plane is flying. if the
A rescue plane is flying at 300 m above the ground at 210 km/hr. It is going to drop a package of supplies to some survivors on the ground. how far from the survivors should it drop the package
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation. What is the radius (in cm) of coil 2
The total energy of a particle is 3.97 times its rest energy. The mass of the particle is 2.8 × 10^-27 kg. With what speed is the particle moving and what is the particle's momentum
If a real object is placed inside the focal point of a diverging lens, the image is_______.
A family ice show is held in an enclosed arena. The skatersperform to music playing at a level of 85.0 dB. What is the combined sound level
A dive bomber has a velocity of 230 m/s at an angle theta below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, Find the angle theta
q1. in a crash test a 1300 kg car slams into a concrete wall at 18.8 ms and comes to rest in 0.275 s. a find the
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