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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 "swing" ride at a carnival consists of chairs that are swung in acircle by 12.0 m cables attached to a vertical rotating pole, asthe drawing shows. (θ = 66.0°) Suppose the total mass of a chair and its occupant is 234 kg.
a flat surface having an area of 3.6 m2 is rotated in a uniform electric field of magnitude e 6.3 x 105 nc. determine
A ship displaces 3.00*103 m3 of fresh water on a river. When is passes out to sea, find what volume of sea water will it displace
an object 4.59 kg traveling at 2.76 ms collides with another object 11.80 kg that has an initial velocity of 1.81 ms in
during a cold winter day wind at 55 kmh assuming heat transfer coefficient h 32.8 wm2c is blowing parallel to a
A spaceship of proper length298m takes0.79µs to pass an Earth observer. find the speed of this spaceship as measured by the Earth observer
identical 50uc charges are fixed on an x-axis at x -3.0 m. a particle of charge q-15uc is then released from rest at a
Two children with masses of 23 and 41 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, where is the heavier child sitting
A grinding wheel in the shape of a solid disk is0.240 {\rm m} in diameter and has a massof 2.50 {\rm kg}. The wheel is rotating at2050 {\rm rpm} about an axis through itscenter. What is its kinetic energy?
the resistivity of a semi conductor can be modified by adding different amounts of impurities. a rod of semi conducting
the oscillations of an actual spring-block system slowly reduce in amplitude and finally the system comes to a halt.
A plane accelerates from rest at a constant rate of 5.00 m/s along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time needed to take off?What is the distance(m) travel..
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