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A child of mass 50.9 kg sits on the edge ofa merry-go-round with radius 1.5 m and momentof inertia 97.3463 kg m2. The merrygo-roundrotates with an angular velocity of2.4 rad/s. The child then walks towards thecenter of the merry-go-round and stops at adistance 0.525 m from the center. Now whatis the angular velocity of the merry-go-round?Answer in units of rad/s.
A 56 kg astronaut stands on a bathroom scale inside a rotating circular space station. The radius of the space station is 250 m. The bathroom scale reads 42 kg. At what speed does the space station floor rotate
A boy is on a Ferris wheel, which takes him in a vertical circle of radius 7.6 m once every 15.0 s. What is the angular speed of the Ferris wheel
A horizontal force of 159N pushes a 20 kg block up a frictionless incline that makes an angle of 35 degrees with the horizontal. What is the acceleration of the block
A block of mass m1 = 17 kg slides along a horizontal surface (with friction, μk = 0.49) a distance d = 2.45 m before striking a second block of mass m2 = 7.5 kg. How far does block 2 travel, d2, in meters, before coming to rest
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit agolf ball with a 6 iron. For how much more time was the ball in flight
An 8-m-long beam, weighing 14,700 N, is hinged to a wall and supported by a light rope that is attached 2.0 m from the free end of the beam. calculate the reaction force of the wall on the beam
A plane flies 429 km east from city A to city B in 45.0 min and then 969 km south from city B to city C in 1.40 h, find its average speed (in km/h)
A gas consists of 4.65 grams of oxygen and4.65 grams of nitrogen and occupies a volume of 0.50 liter at a temperature of345 K. Discover the number of gas molecules. Discover the partial pressure of the oxygen.
two lightbulbs are in series one operating at 120 w and the other operating at 60.0 w. if the voltage drop across the
Two spheres with uniform surface charge denisty, first with radius 7.4 cm and the other witrh radius 5.0cm, What is the surface charge density on each sphere
A doubly charged ion is accelerated to an energy of 30.0 keV by the electric field between two parallel conducting plates separated by 1.50 cm
Two scales on a voltmeter measure voltages up to 21.0 and 30.9 V,respectively. The resistance connected in series with thegalvanometer is 1530 for the 21.0-V scale and 3020 for the 30.9-V scale.
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