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A ball of mass .5 kg moves perpendicular to the door by the speed of 10 m/s. The door has a mass of 3 kg and a width of 2 m and is hinged about one end. The moment of inertia of a bar rotated about its end is 1/3 Ml^2. The ball strikes the end of the door opposite hinge and stops moving. What is the angular speed of the door after the collision?
A block with mass m =7.0 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.2 m. Where is the potential energy of the system the greatest
An electron moves with a speed of 8.0x10^6 m/s along the +x axis. Calculate the magnitude of the magnectic force on the electron
q1. a certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of
a an energetic photon of wavelength 5.1 nm scatters off an electron at rest at an angle of 63 degrees. what is the
Calculate the magnitude of the linear momentum of a 35 kg object on the equator, as measured from the center of the Earth. The radius of the Earth is 6371 km.
ne kilowatt-hour (kWh) is the amount of work or energygenerated when one kilowatt of power is supplied for a timeof one hour. find the numbner of joules of energy in one kilowatt-hour
the record distance in the sport of throwing cowpats is 81.1 m. assuming the initial launch angle was 45deg and
A truck covers 40.01 m in 7.615 s while smoothly slowing down to final speed 1.40 m/s. What is the original speed and what is the acceleration.
One end of a 5.39-m long string is moved up and down with simple harmonic motion at a frequency of 69.0 Hz. find the wavelength of the waves on the string
A FLYWHEEL WITH A MOMENT OF INERTIA 6.00 * 10^6 kg*m^2 is spinning with an angular speed of 120 rev/s about a vertical axis while it sits at the north pole. What will be the change in length of a day on earth
An air bubble inside an 8.70 cm -diameter plastic ball is 3.00 cm from the surface. how far beneath the surface does the bubble appear to be
Two rooms in your house differ in temperature by 8.5?F. What's the temperature difference in kelvin
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