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Given: The viscosity is negligible. Atmospheric pressure is 101300 Pa.
Water flows at speed of 4.9 m/s through a horizontal pipe of diameter 3.2 cm. The gauge pressure P1 of the water in the pipe is 1.5 atm. A short segment of the pipe is constricted to a smaller diameter 2.2 cm.
What is the speed v2 of the water flowing through the constricted segment in m/s?
What is the gauge pressure of the water flowing through the constricted segment in atm?
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
A car speeds past a stationary police officer while travelling 115km/h. The officer immediately begins pursuit at a constant acceleration of 10.20 km/h/s (note the mixed units), just as the driver passes the officer.
Determine the magnitude of the force on an electron traveling 4.15×105m/s horizontally to the east in a vertically upward magnetic field of strength 0.37T
A whale comes to the surface to breathe and then dives at an angle of 20 degree below the horizontal.
An open-pit coal mine consumes 71hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometres, is separate in this time.
During this experiment the first step in the procedure was the measurement of the string's mass and total lenght, Calculate lthe linear mass density of the string in g/cm
A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
A block of unknown mass, m, is brought into the configuration shown. It was measured that upon release the block shot upward a maximum distance of 2m. Calculate the mass of this block? The upper spring has a natural length of 1m, and the lower spr..
A gymnast of mass 59 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and presume that the rope does not stretch. Utilize the value for the acceleration of gravity.
A current loop, carrying a current of 3.0 A, is in the shape of a right triangle with sides 30, 40, and 50 cm. Find the magnetic dipole moment of the loop
A space station, in the form of a wheel 100m in diameter, rotates to supply an "artificial gravity" of 3.7m/s2 for persons who walk around on inner wall of the outer rim. Find out the rate of rotation of the wheel (in revolutions per minute) that ..
A bucket filled with water exerting a force of 529N is hanging from a rope that is wound around a 0.05 m radius stationary cylinder. If cylinder does not rotate and the bucket hangs straight down, what is the magnitude of torque the bucket produce..
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