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A wheel spins on its axis with a angular velocity of 2 rad/s. A torque is applied to speed to wheel up, and this torque produces an angular acceleration of 3 rad/s2. Find how long will it take to get the angular velocity up to 8 rad/s?
A rifle bullet weighing 17 gand traveling 240 m/s penetrates a 2.5 kg block of wood and emergesgoing 175 m/s. how fast does it move after the bullet emerges
A stone is dropped from the top of a 77 meter tall building. Determine how far above the ground is the stone one seconds before it reaches the ground
A ski starts from rest and slides down a 28 degree incline 70m long. If the coefficient of friction is 0.090, what is the ski's speed at the base of the incline
A solenoid is formed by winding 11.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping and the insulating coat on the wire is negligibly thin.
a 2-kg mass at the end of a 1.5m rod is rotating in a vertical circle with a constant angular velocity of 8.5
A square, 0.66 m on a side, is mounted therefore that it can rotate about an axis that passes during the center of the square. The axis is perpendicular to the plane of the square. A force of 14.3 N lies in this plane and is applied to the square.
A current of 16.0 mA is maintained in a single circular loop with a circumference of 3.70 m. What is the magnitude of the torque exerted on the loop by the magnetic field
A block with mass 0.5 kilogram is covering a hole in a horizontal table. From below the table a bullet with mass 5 g is fired straight up. Find the speed with which the bullet hit the block
A 110kg linebacker tackles an 85kg halfback. immediately before the collision the linebacker is slipping with a velocity of 8.8 m/s north and the halfback is sliding with a velocity of 7.2m/s east.
what is the gravitational acceleration at altitude 1.2 Re above the earth's surface. what is the orbital speed
A small button placed on a horizontal rotating platform with diameter 0.316 m will revolve with the platform when it is brought up to a rotational speed of 39.0 rev/min, How far from the axis can the button be placed
A 7.05 bullet traveling at 520 m/s embeds itself in a 1.85kg wooden block at rest on a frictionless surface. Find the amplitude of the subsequent simple harmonic motion
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