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A parabolic velocity profile is desired at the end of a 10-m-long, 8-mm-diameter tube attached to a tank filled with 20-C water. An experiment is run during which 60 L is collected in 90 min. Is the laminar flow assumption reasonable? If so, would the tube be sufficiently long?
A student (m = 56 kg) falls freely from rest and strikes the ground. All through the impact with the ground, he comes to rest in a time of 0.04 s.
What credible cosmological models, besides the Big Bang, are out there, and what are their implications for the age of the Universe
A conductor, of length 50 centimeter, carrying a current I= 10 Amp is directed along the positive x axis and perpendicular to a uniform magnetic field.compute the direction of the magnetic field in the region through which the current passes
A particle of mass m0 is given a kinetic energy equal to one-fourth its rest-mass energy. How fast must the particle be traveling
Doug uses a 29 horizontal force to push a 3.5 crate up a 1.5 -high, 20 frictionless slope. What is the speed of the crate at the top of the slope
The tires of a car make 62 revolutions as the car reduces its speed uniformly from 90km/h to 40km/h . The tires have a diameter of 0.86m. What was the angular acceleration of the tires
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
A uniform magnetic field of magnitude B = 0.020 T is in the positive y-direction. Determine the magnitude and direction of the magnetic force on each segment.
A potential dissimilarity of 2.60 V will be applied to a 29.00 m length of 18-gauge iron wire (diameter = 0.0400 in). Compute the current. Compute the magnitude of the current density. Compute the magnitude of the electric field within the wire.
a 14.0 gauge silver wire of diameter 1.628 carries a current of 13.0 . what is the potential difference across a 2.05
The normal range of hearing is about 20 to 20000 Hz. Assume that your hearing range is 27 to 19500 Hz. (Use 340 m/s as the speed of sound.) What is the greatest length of an organ pipe
Light of wavelength 650 nm passes through a single slit of width 0.05 mm. What is the angular spread of the central diffraction maximum
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