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A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 10.2 rad/s (see figure below). The student turns the spinning wheel upside down, reversing the direction of its angular velocity. This causes the student to begin to rotate. Find the student's final angular velocity. The moments of inertia of the wheel and of the student are 0.317 kg · m2 and 2.67 kg · m2 respectively.
How much work is done by a pump to slowly compress, isothermally, 4.80L of nitrogen at 0 degree celcius and 1.60 atm to 2.40L at 0 degree celcius
Four identical masses of mass 710 kg each are placed at the corners of a square whose side lengths are 15.0 cm. What is the magnitude of net gravitational force on one of the masses, due to the other three.
A biologist keeps a specimen of his favourite beetle embedded in a cube of polystyrene plastic. What is the beetle's actual distance beneath the surface
A proton (mass 1.67*10 ^-27 kg) is moving at 1.40*10 ^-6 m/s directly toward a stationary helium nucleus (mass 6.64*10 ^-27 kg), After a head-on elastic collision, what is the helium's velocity
For a damped oscillator with a mass of 350 g, a spring constant 59.00 N/m and a damping coefficient of 89 g/s, what is the ratio of the amplitude of the damped oscillations to the initial amplitude at the end of 30 cycles.
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. find the coefficient of kinetic friction between the sled and the trail
As you eat your way through a bag of chocolate chip cookies, you observe that each cookie is a circular disk with a diameter of 8.50 ± 0.02 \rm cm, Find the ratio of the diameter to the thickness
calculate the maximum range when radar operates at 10ghz and has peak power10 mwattsn ratio10dbantenna cross
An electromagnetic wave with frequency 56.0 Hz travels in an insulating magnetic material that has dielectric constant 3.72, What is the amplitude of the magnetic field?
A capacitor has a capacitance of 2.48 10-8 F. In the charging process, how many electrons have been transferred
The electric field on the surface of a 11 cm diameter sphere is perpendicular to the sphere and has a magnitude 51 kN/C. What is the electric flux through the sphere
A 70 g metal block moving at 200 cm/s slides across a tabletop a distance of 83 cm before it comes to rest. how much does the temperature of the block rise
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