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The angular momentumof a flywheel having a rotational inertia of 0.150 kgm2 aboutits central axis decreases from 4.00to 1.400 kgm2/s in1.60 s.
(a) What is the magnitude of the average torque actingon the flywheel about its central axis during this period?
Nm
(b) Assuming a uniform angular acceleration, through what angledoes the flywheel turn?
rad
(c) How much work is done on the wheel?
J
(d) What is the average power of the flywheel?
W
A sealed container of volume 0.10 m^3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium, Calculate the temperature and pressure of the helium gas
Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. What is the energy of a single photon
A positively charged particle of mass 7.60 10-8 kg is traveling due east with a speed of 40 m/s and enters a 0.39-T uniform magnetic field. compute the magnitude of the magnetic force acting on the particle
What is minimum important in returning blood to the heart? Negative intrathoracic pressure, valves and veins, the pumping action of skeletal muscles, or the pushing of blood by arterial system.
Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.
Assume that light of a single color, rather than white light, passes through two slits 0.50 mm apart, determine the light's wavelength
A pipe open only at one end has a fundamental frequency of 256 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end.
Explain the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse per rotation of wheel at a speed of 80Km/H?
A rope that is tied between a motor and a crate can pull the crate up a hill of ice (assume no friction) at constant velocity. Write the equations for the body in equilibrium
The mass of a body is 50 kg on the surface of the earth.find its weight on the surface of a planet whose mass is double than the mass of the earth and radius is 5 times the radius of the earth
A parallel-plate capacitor having square plates 4.50cm on each side and 8.00mm apart is placed in series with an ac source of angular frequency 620rad/s, What is the resonance angular frequency of this circuit
In the typical X-ray lamp. The electrons are accelearated in the potential difference of 10000V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp.
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