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a 4kg disk travelling at 4 m/s strikes a 2 kg stick of length 4m that is lying flat on frictionless ice. Assume the collision is "Elastic" and the disk does not deviate from its original line of motion. What is the translational speed of the disk, the translational speed of the stick, and the angular speed of the stick after the collision? (the moment of inertia of the stick about its center of mass is 1.33 kg m^2)
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A common flashlight bulb is rated at 0.300 A and 2.80 V (the values of the current and voltage under operating conditions). what is the temperature of the filament when the bulb is on
A Geiger counter consists of a tube of radius r and legnth L centered around a positively charged filament of equal length. What answer do you get for the linear charge density of the filament if you approximate its length to be infinite
A laser used to weld detached retinas emits light with a wavelength of 652{\rm nm} in pulses that are 20.0{\rm ms} in duration. What is the energy of one photon in electron volts
A hydrogen atom in its first excited state absorbs a photon with an energy of 59.0 eV, What is the kinetic energy of the ejected electron
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 37 m/s. At what frequency does the driver of the car hear the siren
a ball is thrown vertically upward with a speed of 25m/s, how long does it take to reach its highest point
A 180 g top spinning at 14 rev/s makes an angle of 30° to the vertical and precesses at a rate of 1 rev per 8.0 s. what is the moment of inertia of the top
Did you firm earn profit or incurred loss at the end and make a small comment on your financial position at the end.
The head of a rattlesnake can accelerate at 50 m/s^2 in striking a victim. If a car can have the same acceleration, how long would it take for it to reach a speed of 100 km/h from rest.
A 40-kg pole vaulter running at 14 m/s vaults over the bar. Her speed while she is above the bar is 1m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
A music store has jazz, classical, country-western and rock music albums on tapes and CDs in the following quantities finding the probability.
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