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A 3.30 kilogram birdfeeder hangs from the tip of a 1.60 meter pole that sticks up from the ground at a 65.0 degree angle. Find the magnitude of the torque exerted on the pole by the birdfeeder? Treat the bottom end of the pole as the pivot point.
A spinning flywheel has rotational inertia I = 401.0 kg · m2. Its angular velocity decreases from 20.4 rad/s to zero in 261.6 s due to friction
A swimmer looks upward from the bottom of a 3.5-m-deep swimming pool. How far from the swimmer does the board appear to be
A mass m is connected to the bottom of a vertical spring whose force constant is k. Attached to the bottom of themass is a string that is connected to a second mass m, asshown in the figure . Both masses are undergoing simple harmonicvertical moti..
A uniform 7.6 kg ladder is leaning against a frictionless vertical wall, with which it makes a 15 deg angle. how massive a person would make the ladder slip
question what is the probability of the electron in thee ground state of a hydrogen atom being found outside a sphere
a rod is lying on the top of a table. one end of the rod is hinged to the table so that the rod can rotate freely on
Figure below shows two very long straight wires (in crosssection) that each carry a current of 4.17 A directly out of thepage. Distance d1 = 6.12 m and distance d2 = 4.32 m. What is the magnitude of the netmagnetic field at point P, which lies on a ..
A 30g dart is shot straight up at 10 m/s . At the same instant, a 21g ball of cork is dropped from 2.8m above the dart. What is the speed of the cork ball immediately after it is hit by the dart
A boy coasts down a hill on a sled, reaching a level surfaceat the bottom with a speed of 7.1 m/s. how far does the sledtravel on the level surface before coming to rest
A proton is moving along the axis of a uniformly charged thing ring of 20nC/cm. The radius of the ring is 5cm. what initial speed does it need to be able to cross the plane of the ring
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, What is the energy lost by the pendulum
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