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A girl pushes a merry go round until it is rotating with angular velocity of 1 rpm. The merry-go-round is a uniformly massive disc with mass M = 800 kg and a radius R = 2 m. The girl has mass m = 40 kg. (Treat the girl as a point mass)
(a) The girl jumps onto the edge of the merry-go-round. What is the angular velocity of the merry-go-round after she lands?
(b) The girl walks to the center of the merry go round. Does the kinetic energy or the angular momentum of the merry-go-round plus girl change? If so, by how much?
a burst of mesons travel down an evacuated beam tube at fermilab at beta .92 with respect to the laboratory.a compute y
A small airplane flies with a speed relative to the ground (ground speed) of 212.0 km/h in a direction 19.0 degrees to the east of north. what is the speed of the wind
A two-slit pattern is viewed on a screen 1.10 m from the slits. If the two third-order minima are 21.0 cm apart, what is the width of the central bright fringe
A wheel rotates about a horizontal axis. It has an outerradius R1= 21.2 cm and mass M1=4.51 kg. Attached to itconcentrically is a hub of radius R2= 4.70 cm and mass M2 = 1.16kg. what is the kinetic energy of the rotating wheel
A solid, horizontal cylinder of mass 10.0 kg and radius 1.30 m rotates with an angular speed of 8.00 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
A loop of diameter 21 cm is placed in a uniform electric field of magnitude 7.4 102 N/C. What is the electric flux through the loop when the electric field is perpendicular to the plane of the loop
An ice cube is floating at the top of a glass of water. After it melts completely, will the water level rise, fall, or stay the same? Explain your answer.
What was the most interesting part of your visit and is there anything about what you observed that would cause you to want to settle a case or to pursue it fully to trial? What and why?
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
Light of wavelength 568.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 62.5 cm from the slit. What is the width of the slit
The mean distance between earth and the sun is 1.50 multiplied by 1011 m. what is the total power radiated by the sun
An electron traveling at 194 m/s enters a1.1 T magnetic field. The angle betweenthe velocity and the field is 30o. Find the radius of the resulting circular path
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