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A propeller is modeled as five identical uniform rods extending radically from its axis. The length and mass of each rod are 0.715 meter and 2.59 kilogram, correspondingly. When the propeller rotates at 507 revolutions per minute, Obtain what is its rotational kinetic energy?
a spherical capacitor is comprised of a solid inner conduction sphere of radius a with positive charge q and an
Two negative point charges are separated by 10.0cm and feel a mutual repulsive force of 1.55N. The charge of one is three times that of the other. How much charge does each have? What would be the force if the total charge were instead equally distri..
An asteroid, whose mass is 1.70×10-4 times the mass of Earth, Calculate the period of revolution of the asteroid in years
A 10-turn square coil of area 0.036m2 and a 20-turn circular coil are both placed perpendicular to the same changing magnetic field. What is the area of the circular coil
1 to work on your car at night you use an extension cord to connect your work light to a power outlet near the door.
The critical angle for total internal reflection at a benzene-air interface is 41.8 degree. Find what angle does the refracted ray in the liquid make with the normal
A wire has a resistance of 60.0 ohms, and is bent into a squareloop with sides of length 15.0 cm. The loop is perpendicularto a magnetic field which is changing at a rate of7.000e-3 T/s. What is the current induced in thewire?
An empty railroad car of mass 4400 kg is being pulled beneath a grain elevator that dumps grain at the rate of 175 kg/s. If the coefficient of friction among the car wheels and the track is 0.021, what is the force required to keep the car moving at ..
During a tennis serve, a racket is given an angularacceleration of magnitude 160 rad/s2. find the magnitude of the total acceleration of the top of the racket
A 70- kg child sits in a swing suspended with 3.3- m-long ropes. determine the speed the child will have at the bottom of the arc
The Stanford Linear Accelerator can accelerate electrons to energies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = 2 ..
An air bubble rises from the bottom of well where the temperature is 25 degree C, to the surface where the temperature is 27 degree C. Find the percent increase in the volume of the bubble if the depth of the well is 5 m. Atmospheric pressure is 101...
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