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A 35kg child is standing on the outer edge of a merry-go-round that has moment of inertia 847 kg*m^2 and radius 2.40 m. The entire system is initially rotating at 0.180 rev/s. Discover the angular velocity if the child moves to a final position 1.10 m from the center of the merry-go-round.
The coefficients of static and kinetic friction between a 67 kg box and a horizontal surface are 0.56 and 0.32, respectively. Illustrate what is the acceleration of the object if a 335 N horizontal force is applied to the box?
radium is a radioactive element whose nucleus emits an alpha particle a helium nucleus that has a kinetic energy of
A 10000 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.0 m/s. What is the mass of the second car
A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. find the magnitude of the electric field due to the disk
A length of aluminum wire has a resistance of 12.0 Ω at 22.0°C. When the wire is warmed in an oven and reaches thermal equilibrium, evaluate the temperature of the oven
a light plane is headed due south with a speed relative to still air of 185 kmh. after 1 h the pilot notices that they
three long straight electrical cables running north and south are tightly enclosed in an insulating sheath. one of the
nichrome wire of cross-sectional radius 0.786 mm is to be used in winding a heating coil. if the coil must carry a
You drop 500 g of ice at -35oC into a bucket of water (1200 g) at 45oC. Find the final temperature of the system
What is the minimum uncertainly in the speed of an electron that is known to be somewhere between 0.065 nm and 0.30 nm from a proton.
A mass m is connected to the bottom of a vertical spring whose force constant is k. Attached to the bottom of themass is a string that is connected to a second mass m, asshown in the figure . Both masses are undergoing simple harmonicvertical moti..
A toy train is pushed forward and released at xi = 2.4 m with a speed of 1.4 m/s. What is the train's acceleration after its wheel begins to stick
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