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A cord is wrapped around the rim of a wheel 0.310 m in radius, and a steady pull of37.0 N is exerted on the cord. Thewheel is mounted on frictionless bearings on a horizontal shaftthrough its center. The moment of inertia of the wheel about thisshaft is 4.00 kgm2. Compute the angular acceleration of the wheel.
___________rad/s2
When a wavelength is 300nm, its stopping potential is 1.10V. When it is changed to 200nm, the stopping potential is 3.06V. What value does this experiment yield for Planck's constant
A typical capacitor in an MP3 player has C = 5 ?F. If a charge ±37 ?C is placed on the plates, what is the voltage across the capacitor?
In a photoelectric effect experiment, which metal will have a higher cutoff wavelength (i.e. the wavelength above which no electrons are emitted), silver which has a work function of 4.73 eV or lead which has a work function of 4.14 eV? Explain why.
A small rocket is powered upward on lift-off by an engine thrust of 12,000-N. If the resulting upward acceleration is 6.40m/s^2, what is the mass of the rocket?
A box slides down a ramp between a delivery area and soring area. You must determine the angle this ramp should have with the horizontal direction so that a 500 pound box takes 5.0 seconds to slide down the ramp starting from rest at the top. While t..
A power supply has an open-circuit voltage of 43.0 V and an internal resistance of 2.00 ?. What additional resistance should be added in series
Two particles, with identical positive charges and a separation of 2.70 10-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration A1 whose magnitude is 4.90 103 m/s2,
A concave spherical mirror has a radius of curvature of 0.72 m. An object placed in front ofthe mirror is 0.30 m tall. Find the height of the image formed
a bee that is 3m away from a person produces a buzzing sound that is barely audible (the intensity is the threshold of hearing I0) What is the decible level of 1000 bees
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 5.90 m to a store. At what angle is the escalator inclined above the horizontal
In a serve, a tennis player hits the ball horizontally. Neglect the effects of air resistance and the diameter of the ball. Where will the ball land if it just clears the net
Two space walkers, one with a mass of 77 kg and the other with a mass of 78 kg, hold on to the ends of a lightweight cable 14.5 m long. how far will the less massive astronaut move
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