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A 4.7 meter long, 450 kilogram steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kilogram construction worker stands at the far end of the beam. Obtain what is the magnitude of the torque about the point where the beam is bolted into place?
A block, mass m, slides down a ramp inclined 27 degrees above the horizontal. Calculate the speed of the block if it begins at rest
A +1 uC charge is held 10 cm directly above the origin. A -1 uC charge is held 5 cm directly to the right of the origin. What is the electric potential at the origin
A public transportation bus makes the position-time graph over a 5.00 hour interval shown below. What is the average velocity (magnitude and direction) of the bus
Two power supplies are connected in series. The maximum voltage of each power supply is8.3V and 15.0V respectively, what is the resulting maximum voltage produced by the supplies
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
A boy is running at a speed of (6.4 m/s) and grabs a rope hanging vertically from a tall tree in order to swing out over a pond. Determine how high can he swing upward
A 19.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 4.50 cm in diameter. How far to the side does the top of the pole flex
1 find the solid angle subtended by a f1 lens at a point source located at its focus.2 find the radian intensity of a
A bicycle wheel of radius 28 cm is mounted at the middle of anaxle 50 cm long. The tire and rim weigh 30 N. What is the angular speed of precession
A fun-loving 10.1kg otter slides up a hill and then back down to the same place. how much mechanical energy did she lose on the hill
a 1 microci hot particle was removed from a workers forearm using a tape press. an isotopic analysis of the particle is
A three-way 240 V lamp bulb that contains two filaments is rated for 200-400-600 W. One filament burns out. Afterward, the bulb operates at the similar intensity (dissipates energy at the same rate) on its lowest as on its highest switch positions ho..
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