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A fan rotating with initial velocity! = =2rad=s comes to complete stop after15:5 turns, Find.
a) the angular acceleration.
b) the time it takes the fan to stop.
c) timeit takes the fan to make 12 rev.
Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is ?A = 591nm. The other wavelength is ?B and is unknown. What is the unknown wavelength
In nuclear power plant, the reactor produces steam at 518 celcius and the cooling tower eliminates waste heat into the atmosphere at 27 celcius. what is the rate of release of waste heat
the solar year equinox to equinox is 365.2422 days not 365. 25 days. convert the difference to minutes and seconds.
question a car is traveling east at 15.21 ms. 29.87 seconds later it is traveling north at 15.21 ms. what is the
A 91.0-kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 15.0 m. What time interval is required for the cord to stretch by 26.0 m
Four particles, one at each of the four corners of a square with 3m-long edges, are connected by massless rods. The masses of the particles are m1 = m3 = 4kg and m2 = m4 = 5kg. Determine the moment of inertia of the system about the z axis.
A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s, What resistive force (assumed to be constant) does the wood exert on the bullet
If the internal energy of a system increases as the result of an adiabatic process, Calculate the work done on or by the system in part (a) if its internal energy increases by 700J
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water at an angle of incidence of 60.8°
A ray of light strikes a plane mirror perpendicular to the mirror. What is the angle of reflection
a simple camera telephoto lens consists of two lenses. the objective lens has a focal length of f1 39 cm. precisely
An object with a mass of 1.60kg is at rest on a horizontal, frictionless surface of a rink. What are the positions and speed of the object st the end of that time
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