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A system consists of three particles, each of mass 5.85 g, located at the corners of an equilateral triangle with sides of length 18.0 cm. What is the potential energy of the system?
A 30 g steel ball bounces elastically on a steel plate, always returning to the same maximum height h = 14.2 m. What is the weight of the ball
A 3m-long rigid beam with a mass 140 kg is supported at each end. An 75 student stands 2m from support 1.
In order to fabricate a uniform wire of resistance 2.7 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the length of the wire
The blood flow speed through an aorta with a radius of 1.00 cm is 0.365 m/s, If aorta constricts to a radius of 0.800 cm, how much does blood flow speed increase
A grating has 600 rulings per mm and is 6.0 mm wide. What is the smallest wavelenght interval that can be resolved in the third order at ? = 500 nm? How many orders can be seen? Assum normal incidence of light on the grting throughout.
Each of three tuning forks, A, B, and C, has a slightly different frequency. What is the smallest possible beat frequency when B and C are sounded together
In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2eV . When the wavelength of the light is increased by 50% , What is the work function of the cathode
q1. an object is hung from a spring set into vertical vibration and immersed in a beaker of oil. its motion is graphed.
A penny sits 20 cm from the axis on an old record, which is spinning at 45 rpm. find the coefficient of friction between the penny and the record
A transformer changes the 10,000 V power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary
A steel wire with mass21.8g and length1.6m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Calculate the tension required to obtain the proper frequency
q1. a small ball of mass 62 g is suspended from a string of length 37 cm and whirled in a circle lying in the
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