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A sphere of mass M is supported by a string that passes over a pulley at the end of a horizontal rod of length L. The string makes an angle theta with the rod. The fundamental frequency of standing waves in the portion of the string above the rod is f. Find the mass of the portion of the string above the rod.
What is the effect of thermal insulation on cooling
A race car has a mass of 703 kg. It starts from rest and travels 40.0 m in 3.0 s. The car is uniformly accelerated throughout the entire time. What net force is exerted on it.
In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m.
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
Phonology: All the data for this problem come from a conservative dialect of Vèneto, a Romance language spoken in northern Italy near the city of Padua.
The electrons in a metal that produce electric currents behave approximately as molecules of an ideal gas. The mass of an electron is me = 9.109x10-31 kg. If the temperature of metal is 311 K, what is the root-mean-square speed of the electrons.
A thin, flexible metal plate attached at one end to the platform, can be used to measure mass. When the free end of the plate is pulled down and released, it vibrates in simple harmonic motion with a period that depends on the mass attached to the pl..
Two mirrors meet at a 133° angle. If light rays strike one mirror at 40°, at what angle ? do they leave the second mirror?what is the value of h.
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
A 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the beam is horizontal.
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