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A student sits at rest on a stool that can rotate without friction. The moment of inertia of the student-stool system is 3.3 kg•m2. A second student tosses a 1.8 kilogram mass with a speed of 2.3 m/s to the student on the stool, who catches it at a distance of 0.34 meter from the axis of rotation. Find the resulting angular speed of the stool and the student?
A solid disk of mass M and radius R is pivoted so that it can rotate about its center. The disk is initially at rest. A ball of mass m and speed v travels along a path tangential to the rim of the disk.
A +5.0-microC charge experiences a 0.46-N force in the positive y direction. If this charge is replaced with a charge-2.7-microC, find the magnitude of the force in this case.
Blocks A (mass 6.50kg ) and B (mass 15.00kg ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 10.0m/s . The blocks are equipped with ideal spring bumpers. The collision is head-on, so al..
Assuming wind forces can be neglected, what is the highest that one can make a solid concrete tower of uniform cross-section (Take the density of concrete to be 2,400 kg/m^3)
Suppose a satellite is in a circular orbit 3.425 Earth radii above the surface of the Earth (4.425 Earth radii from the center of the Earth). By how much does it have to increase its speed
The temperature of a black body is increased by 10.5 percents. By how many percents did the wavelength of the peak change
Suppose that when a certain sound intensity level (in dB) doubles, the sound intensity (in W/m2) triples. Determine this sound intensity level
A baseball is confined between two thick walls a distance 0.5m apart. Calculate the zero point energy of the baseball
A carpenter carries his 8kg toolbox at constant speed up 2 flights of stairs, each 3m high, in one minute. How much work did the carpenter do in carrying the toolbox up 2 flights
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
At which wavelengths (or energies) will you observe lines in infrared absorption (a phonon absorbs a photon) and raman scattering spectra? The temperature is 300 k. raman scattering is excited with a cw Argon laser at 514.5 nm.
assuming dissipative forces can be ignored how fast will an empty barrel with a radius of 57 cm be moving after
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