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Water enters a horizontal nozzle with diameters d1 and d2 at 10 m=s and exits to the atmosphere. Estimate the pressure upstream of the nozzle if
(a) d1 ¼ 8 cm and d2 ¼ 6 cm
(b) d1 ¼ 8 cm and d2 ¼ 4 cm
(c) d1 ¼ 10 cm and d2 ¼ 6 cm
(d ) d1 ¼ 12 cm and d2 ¼ 5 cm
A small-amplitude wave travels through the atmosphere creating a pressure rise of 5 Pa. Estimate the temperature rise across the wave and the induced velocity behind the wave.
A car traveling at a constant speed of 22.5 m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.90 m/s2.
While taking a walk around your neighborhood, you see a flash of lightning hit the Earth in the distance. How far away did the lightning strike the ground
Find the coefficient of kinetic friction between a 4.1- block and the horizontal surface on which it rests if an 83 spring must be stretched by 3.0 to pull the block wi`th constant speed. Assume the spring pulls in a direction 15 above the horizontal..
A ball swings in a vertical circle at the end of a 1.5 m long string. When the ball is at the bottom of circle, Evaluate what is the mass of the ball
A body of mass 2.65 kg moves along the x-axis, and its motion is described by the equation x = 6 sin (13 t + 2), Find the resultant force on the body at t = 0.100 s
A 120-g mug at 21C is filled with 210g of coffee at 91C. suppose all of the heat lost by the coffee is transferred to the mug, what is the final temperature of the coffee? The specific heat capacity of the mug is 7.8 X 10^2 J/(Kg C)
he filament of a certain lamp has a resistance that increases linearly with temperature. What is the change in temperature of the filament
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27.0° above the horizontal. What is the magnitude of the net torque exerted on the branch by the children
A compound microscope has a barrel length of 163.0 mm and an objective with a 4.110-mm focal length. Find the angular magnification of the eyepiece
a particle with a charge of 1.60*10^-19 and a mass of 1.67*10^-27kg is found moving in a uniform magnetic field of a strength 1.50T. calculate the kineic energy of the particle
Which best describes the total mechanical energy of a system in simple harmonic motion? A. zero as it passes the equilibrium point B. zero when it reaches the maximum displacement C. a maximum when it passes through the equilibrium point D. consta..
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