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An LP turntable must spin at 3.520 rad/s to play a record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 1.900 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.70 cm and mass 0.3100 kg.
An in?nitely long wire carries a current I along the x-axis, and is bent so as to have a semi-circular detour around the origin, with radius R. Determine B at the origin.
A cylindrical fishing reel has a moment of inertia of I =6.30E-4 kg*m2 and a radius of 3.86 cm. What is theforce of the fish on the line
A tornado Siren emits 3000 W of sound power, radialy equal in all directions. Assume the weakest sound likely to be heard over background noise is 55dB. What is the maximum distance the iran can be heard
A 7.80 gram bullet moving at 460 m/s penetrates a tree trunk to a depth of 4.4 centimeter. Use work and energy considerations to compute the average frictional force that stops the bullet
Sphere A has a mas m and is moving with velocity v (along +x axis). It makes a head-on elastic collistion with a stationary shpere B of mass 2m. after the collisiion, the spee of sphere B is 2v/3. What is the velocity of Sphere A in terms of v after ..
A 0.362 kg bead slides on a curved wire, starting from rest at point A, find the speed of the bead at C
A 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of y1.
The shaft-disk-belt arrangement shown is used to transmit 2.4 kW from point A to point D. Knowing that the maximum allowable couples that can be applied to shafts AB and CD are 25 N . m and 80 N . m, respectively, determine the required minimum sp..
The charge on the opposite side to the point is -4 nC and the charges on the adjacent sides of the square are +4 nC. Find the potential at the uncharged corner
A student throws a ball vertically upward such that it travels 7.5m to its maximum height. What is the ball's average velocity
A projectile is fired at such an angle from the horizontal that vertical component of its velocity is 49 m/s. The horizontal component of its velocity is 61 m/s.
A car traveling at 120km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.85m. What was the magnitude of the average acceleration
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