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Suppose a 69kg person stands at the edge of a 6.4m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1830kg *m^2 . The turntable is at rest initially, but when the person begins running at a speed of 4.1m/s (with respect to the turntable) around its edge, the turntable begins to rotate in the opposite direction. Calculate the magnitude of the angular velocity of the turntable.
Describe the basic concept of the Atwood's machine. What is the net applied force? What is the mass to which this net force is applied
A daredevil plans to bungee jump from a balloon 72.0 m above a carnival midway. He will use a uniform elastic cord, What length of cord should he use
A car is driven 175km west and then 55km southwest. What is the displacement of the car from the point of origin (magnitude and direction).
A certain laser emits light in a narrow band of wavelengths centered at 632.7 nm and with a ''wavelength width'', What is the corresponding ''frequency width'' in hertz for the emission
A cylinder is fitted with a piston that is connected to the bottom by a spring. Find the work done by pressure in compressing the spring
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 10.1 m to a store. At what angle is the escalator inclined above the horizontal
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
Two spheres are launched horizontally from a1.0m -high table. Sphere A is launched with an initial speed of 5.0m/s. What is the time for the sphere A to hit the floor
Two adjacent natural frequencies of an organ pipe are found to be 450 Hz and 495 Hz. What is the length of the pipe
2.1 m length of straight wire carries a current of 30 A in a uniform magnetic field of 55 mT whose direction is at an angle of 37° from the direction of the current
In a lab experiment, 7.75g of phosphorus reacts with bromine to form 67.68g of phosphorus tribromide, How many grams bromine reacted and how do you know
A variable-speed drill, initially turning at 300 rpm, speeds up to 1300 rpm in a time interval of 0.3 s
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