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Each of the three helicopter rotor blades is 5.20 mlong and has a mass of 280 kg. The rotor is rotating at 250rpm. What is the rotational inertia of the rotor assemblyabout the axis of rotation? (Each blade can be considered to be athin rod.)
What is the kinetic energy of rotation?
In the circuit shown in the figure (Figure 1) the current through the 12.0-V battery is measured to be 70.6 mA in the direction shown
A particle is oscillating with simple harmonic motion with a period of T = 2.44 s, What is the amplitude of the particle's motion
A 0.0500-kg lead bullet of volume 5.00 × 10?6 m3 at 20.0 °C hits a block that is made of an ideal thermal insulator and comes to rest at its center. How much heat was needed to raise the bullet to its final temperature
A 10-turn circular coil of wire has a di- ameter of 0.45 m. What is the strength of the average emf generated in the coil
You have a lens whose focal length is 12.7 cm. You place an object on the axis of the lens at a distance of 6.25 cm from it. How far is the object\'s image from the lens
a composite slab with dimensions d1 = 10.8 cm, d2 = 3.00 cm, and d3 = 14.0 cm. What are the coordinates of the center of mass of the slab
When UV light of wavelength 260nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.20eV. What is the work function of the metal
Trucks can be run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 611 rad/s. how many minutes can it operate between chargings
An ideal gas undergoes isothermal compression from an initial volume of 5.37 m3 to a final volume of 2.27 m3. There is 6.45 mol of the gas, How much work is done by the gas
A mass of 9.30 kg is suspended from a 1.45 m long string. It revolves in a horizontal circle, Calculate the angle between the string and the vertical
From point B, the ball was in the air 2.0 seconds and traveled a horizontial distance of 16.2 meters before hitting the ground. Illustrate with what velocity did the ball leave her hand at point B?
A weight lifter raises a 1021 N weight a vertical distance of 1.60 m in a time interval of 2.20 s. Compute the power provided by the weight lifter's force
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