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A wheel 55.0 cm in diameter accelerates uniformly from 215 rpm to 370 rpm. If in this process a point on the edge of this wheel have traveled 93 m, how long does this process take?
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The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 12-g nail
A person consumes a meal containing 17 kcal. What is the power this meal produces if it is to be "burned off" due to exercise in 6 hours
The force on a charged particle of mass 2.5 × 10-3 kg and charge 4.5 mC is observed to be 0.25 N/C. what is the electric field felt by the particle
If the final temperature of the system is 22.0?C, what is the mass m of the water that was initially at 80.0 ?C
Compute the average linear velocity of the discus
A mass on a spring vibrates in simple harmonic motion at a frequency of 0.75 Hz and amplitude of 4.0 cm. what is the speed of the mass when t = 1.0 s
The 3.70 cm3 volume between the plates of a 444 pF parallel-plate capacitor is filled with a dielectric, Find the permittivity of the dielectric
A narrow beam of white light is incident at 30? on a 11.0cm -thick piece of glass. What is the index of refraction for deep violet light
As an admirer of Thomas Young, you perform a double-slit experiment in his honor. How far on the screen are the first bright fringe and the second dark fringe from the central bright fringe
A thin 320g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705J of kinetic energy. What is the speed (in m/s) of a point on rim.
A rocket ship of proper length l0 trav- els at constant speed v in the x-direction relative to a frame S. The nose of the ship passes the point x = 0 (in S) at time t = 0
A 20-kg child swings back and forth on a swing such that her height h in m from the ground as a function of x is described by: h(x) = 0.5 + 0.45x2 for -1.2 m ? x ? 1.2 m, What is the maximum potential energy of the child
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