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The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 3.0 rev/s in 11.0 second. At this point the person doing the laundry opens the lid, and a safety switch turns off the washer. The tub slows to rest in 10.0 second. Obtain through how many revolutions does the tub turn during this 21 second time interval? Suppose constant angular acceleration while it is starting and stopping.
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Two positive charges, each of magnitude 1 x 10^-6 C, are located a distance of 17 cm from each other. compute the magnitude of the force exerted on each charge
A 77cm tall graduated cylinder is filled with 29cm of glycerin (density 1260 {kg/m3) and 48cm of water. Find the pressure difference between the top and bottom
A 40 cm long tube has a 40 cm long insert that can be pulled in and out. As the insert is slowly pulled out, What is the frequency of the tuning fork
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts a 8360 N force on the plane, directed upward at an angle of 56.0° above the horizontal.
A laser light has a wavelength of 670 nanometers and the separation between the two first order diffraction minima is 11 cm. Calculate the slit width and slit separation
A standing observer perceives a train whistle to have a frequency of 300 Hz. what is the frequency of the sound waves emitted from the train
A mass m hangs from a uniform spring of constant k. what is the period of oscillations in the system
A beam of light traveling in water strikes a surface of a transparent material at an angle of incidence of 45°. what is the index of refraction of the material
At an amusement part there is a ride in which cylindricallyshaped chambers spin around a central axis. What is the radius of a chamber
a 16-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 33 n. starting from rest
A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 16 m/s. How much work must be done by the brakes to bring the bike and rider to a stop.
Consider a hydrogen atom in a magnetic field. Sketch the possible transitions among the n = 3, l = 2 and n = 2 and l = 1 levels. Which lines will not appear if we need that Δm = 1,0, and -1 only? How many spectral lines with dissimilar frequencies wi..
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