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A person of mass 80 kg stands at the center of a rotating merry-go-round platform of radius 2.7 m and moment of inertia 970kg%u22C5m^2 . The platform rotates without friction with angular velocity 2.3 rad/s . The person walks radially to the edge of the platform.
A) Calculate the angular velocity when the person reaches the edge.
B) Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk.
the index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), what is the angle of refraction for each wavelength
A 120 kg mail bag hangs by a vertical rope 4.00 m long. A postal worker then displaces the bag to a position 2.10 m sideways from its original position, always keeping the rope taut.
A car travelling at 16 m/s runs out of gas while travelling up a 21 degree slope. How far up the hill would it coast before starting to roll back down.
A 2.16 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0320 m. The spring has force constant 840 N/m.
Find out the energy dissipated by friction. Find the coefficient of kinetic friction between the tires and the road.
A source delivers an AC voltage of the form ?v = 96.2 sin (66?t), obtain the frequency of the source
A cardboard tube of radius R and length L has a uniform charge density on its surface. Find the potential at a point on the axis of the tube at a distance d from the center.
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
A television is tuned to a station broadcasting at a frequency of 6.30×10^7Hz. Find the optimum length of the antenna
An airplane is flying in a horizontal circle at a speed of 100 m/s. The 80.0-kg pilot does not want her radial acceleration to exceed 7g. (a) What is the least radius of the circular path? (b) At this radius, what is the force causing the centripe..
In a test laboratory, an electric engine is used to accelerate a wheel from rest. what is the average power output of the engine
Two waves traveling in the same direction combine. The constituent waves have identical angular wave numbers, find the phase difference between the constituent waves
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