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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 car makes a trip due north for three-fourths of the time and due south one-fourth of the time. the average northward
A two-stage rocket moves in space at a constant velocity of+4640 m/s. The two stages are then separated by a small explosivecharge placed between them. Immediately after the explosion thevelocity of the 1230-kg upper stage is +5700 m/s. What is theve..
An outside loudspeaker (considered a small source) emits sound waves with a power output of 120 W. Find the intensity level in decibels at that distance
A 1967 Kennedy half-dollar has a mass of 1.150 x 10-2 kg. The coin is a mixture of silver and copper, and in water weighs 0.1012 N. Determine the mass of silver in the coin
explain the significance of rh in a hall sensor and using the hall sensor how would you prove that the charges that
The length of a beam increases by 2.3mm when its temperature is raised from 29.5 C to 75.6 C. What is the length of the beam at the initial temperature
A nearsighted patient's far point is 0.521 m from her eyes. What is the distance between her eyes and the glasses
Determine the maximun wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He+ (z= 2)
The 600-N ball shown is suspended on a string AB and rests againsta frictionless vertical wall. The string makes an angle of 30? with the wall. The ball presses against the wall with a force of magnitude:
question two students with vibrating 440-hz tuning forks walk away from each other with equal speeds. how fast must
an object is moving with velocity 18.8 ms along a line making an angle of 218deg measured counterclockwise from the x
A playground merry-go-round spins with negligible friction. A child moves from the center out to the rim of the merry-go-round platform. In this merry-go-round and child system, which of these quantities change:
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