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A puck on a frictionless air hockey table has a mass of 5.0 g and is attached to a cord passing through a hole in the surface as in the figure. The puck is revolving at a distance 2.0 m from the hole with an angular velocity of 3.0 rad/s. The cord is then pulled from below, shortening the radius to 1.0 m. The new angular velocity (in rad/s) is
Develop a relationship which will the give the gravity field of a planet at any point beneath its surface which is distance r from the center.
The magnitude of a force vector is 80.4 newtons (N). The x component of this vector is directed along the +x axis and has a magnitude of 72.6 N.
A 270-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 34° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
An unknown mass, m1, hangs from a mass less string and descends with an acceleration g/2. The other end is attached to a mass m2which slides on a frictionless horizontal table. The string goes over a uniform cylinder of mass m2/2 and radius R.
A proton has 1836 times the rest mass of an electron. At what speed will an electron have the similar kinetic energy as a proton moving at0.0200c?
Modal dispersion in a fiber occurs because propagating rays travel different distances in arriving at the output. Consider the rays travelling in the fiber (see figure below) from A to B at two different paths: determine the ratio between the shor..
A long straight solenoid with a cross-sectional area of 6.15 cm2 is wound with 46 turns of wire per centimeter, Determine the average induced emf in secondary coil
If the two particles with identical masses m collide with elasticity E = 0.650, determine what are the final velocities of the particles
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotati..
A force of magnitude 880.0N stretches a certain spring by 0.190m from its equilibrium position. What is the force constant of this spring? How much elastic potential energy is stored in the spring when it is stretched 0.400m from its equilibrium p..
if you know the temperature of a star how would you find its wavelength? say the temperature of a star is 30000k what
a parallel-plate air capacitor of area a18.0cm2 and plate separation d2.60mm is charged by a battery to a voltage 68.0
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