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A bob of mass m is suspended from a string of length L, forming a pendulum. The period of this pendulum is3.5 s. If the pendulum bob is replacedwith one of mass 1/3m and the length of the pendulum is increasedto 2L, what is the period of oscillation?
A hollow sphere of inner radius 6.2 cm and outer radius 7.2 cm floats half-submerged in a liquid of density 775 kg/m3. What is the mass of the sphere
A 72.0-kg bungee jumper jumps from a bridge. She istied to a bungee cord whose unstretched length is 12.0 m, and fallsa total of 30.4 m. A.) Calculate the spring stiffness constantk of the bungee cord, assuming Hooke's law applies.B.) Calculate the m..
A charge of -2.82 μC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.118 m). The charges on the circle are -4.04 μC at the position due north and +5.11 μC at the position due east.
two infinitely long charged cylinders are centered on the same axis. the inner cylinder of radius a3cm has a uniform
A short blast of sound with frequency 335 Hz is created by a speaker that projects the sound equally in all directions. what was the power of the blast
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
A particle of charge -60nC is placed at the center of anon-conducting spherical shell of inner radius 20cm and outerradius 25cm. The spherical shell is uniformly charged with acharge density of -1.33μC/m3.
The school bus picks up Brian in front of his house and takes him on a straight-line 3.6 km bus ride to school in the positive direction. what is his displacement on the walk home
At a distance r away from a point charge q, the electric potential is V = 600 V and the magnitude of the electric field is E = 200 N/C
A distant galaxy emits light that has a wavelengthof 500.7 nm. On earth, the wavelength of this light ismeasured to be 503.7 nm. Find the speed of the galaxyrelative to the earth
A 10 kg uniform ladder , 8.0 m long is placed against a smooth wallat a height of 3.1 m . What is the force exerted on the wall by the ladder
A uniform, solid metal disk of mass 6.90 and diameter 26.0 hangs in a horizontal plane, supported at its center by a vertical metal wire. What is the torsion constant for the metal wire
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