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The hydraulic dredge shown in Fig. P5.51 is used to dredge sand from a river bottom. Estimate the thrust needed from the propeller to hold the boat stationary. Assume the specific gravity of the sand/water mixture is SG = 1.4.
Find the change in internal energy using first law of thermodynamics.
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. When the clock strikes the hour, you hear an echo of the bell 0.8 s after hearing it directly from the tower. How far apart are the clock tower and th..
light of wavelength 700 nm is incident on the face of a fused quartz prism n 1.458 at 700 nm at an incidence angle of
A train moving with a speed of 31.7 m/s sounds a 140 Hz horn. Assume the stationary observer sounds a horn that is identical to the one on the train. What frequency is heard from this horn by a passenger in the train?
A loudspeaker of mass 18.00 kg is suspended a distance of h= 1.60.below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of t= 3.90 m. What is the tension in each of the cables? Use 9.80 for the magnitude ..
a merry-go-round spins without friction. the merry-go-round is a circular disk of mass m and radius r and that it is
What is the magnetic flux through the coil? The magnetic field at the coil is increased steadily to 0.100 T over a time interval of 0.5 s. What is the magnitude of the emf induced in the coil during the time interval?
When a potential difference of 19 V is applied to a given wire, it conducts 0.30 A of current. What is the resistance of the wire
A sphere that is a perfect blackbody radiator has a radius of 0.130 m, Calculate the net rate at which the sphere radiates energy
45 gram of gasoline are mixed with 50 gram of water. Find the average density of the mixture
Ten days after it was launched toward Mars in December 1998, find the spacecrafts kinetic energy relative to the earth
question in a double-slit arrangement the slits are 1.80 x 10-5 m apart. if light with wavelength 600 nm passes through
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