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A torsion pendulum is constructed of a copper rod of radius 3 mm and length 50 cm. A hollow sphere of mass 1.83 kg and radius 0.5 m is attached to the end of the copper rod and set into oscillation by twisting the rod/sphere. The sphere is rotated 10.2 degrees and then released. If the maximum rotational velocity of the sphere is 1.1 rad/s , what is the period of oscillation?
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
What will the force be between these charges. What should the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction.
A uniform electric field exists in the region between two oppositely charged plane parallel plates, find speed of electron when it strikes second plate
Light of a wavelength 450 nm is incident on a sodium emitter in a photoelectric effect apparatus. What is the cutoff frequency for the emitter
What is the speed of the two carts at the moment while their speeds are equal?
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76 10-11 m. Determine the kinetic energy of the electron.
Conside a spherical asteroid (radius 10km and constant mass density 3g/cm^3). The core extends to 3km, Determine the temperature at the center of the asteroid
Two trains and a bird Two trains, each having a speed of 23km/h, are headed at each other on the equal straight track. A bird that can fly 60km/h flies off the front of one train when they are 70 km apart and heads directly for the other train.
A 65 kg crate slides on a rough plane inclined upward at an angle of 28 degrees, what is the magnitude of the sliding friction force on the box, what is the coefficient of kinetic friction between teh box and the incline
A dipole is formed by point charges +3.8 micro Coulomb and -3.8 micro Coulomb placed on the axis at (0.45 m, 0) and (-0.45m, 0), respectively. At what positions on the axis does the potential have the value 7.7×105 V?
The gravitational acceleration of bodies dropped near the Moon's surface is about 1.6 m/s^2. Find the time for an object dropped from rest to fall 3.0m on the Moon Find the time for an object dropped from rest to fall 3.0m on Earth.
The rod is initially at rest and oriented horizontally and then released so that it swings to the bottom. Illustrate what are all the forces acting on the rod?
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