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A small fan moves air at a mass flowrate of 0.004 lbm/s. Upstream of the fan, the pipe diameter is 2.5 in., the flow is laminar, the velocity distribution is parabolic, and the kinetic energy coefficient, a1, is equal to 2.0. Downstream of the fan, the pipe diameter is 1 in., the flow is turbulent, the velocity profile is quite flat, and the kinetic energy coefficient, a2, is equal to 1.08. If the rise in static pressure across the fan is 0.015 psi and the fan shaft draws 0.00024 hp, compare the value of loss calculated:
(a) assuming uniform velocity distributions,
(b) considering actual velocity distributions.
question a diffraction grating with 305 linesmm is 1.00 m in front of a screen. what is the wavelength of light whose
A 12.00kg runaway grocery cart runs into a spring with spring constant 260-N/m and compresses it by 65 cm. What was the speed of the cart just before it hit spring.
An inductor has the form of a coil with 1750 turns and a diameter of 1.3 mm. The inductor is placed in a magnetic field perpendicular to the plane of the coil and increasing at a rate of0.31 T/s.
A square steel plate is 0:20 m on a side and 4:00 mm thick. Find the displacement of the plate
The speed of sound is 340 m/s. when an observer on the ground hears the sonic boom, find the horizontal distance from the point on its path directly above the observer to the plane
In an adiabatic centrifugal compressor atmospheric air at 15 degree Celsius is compared to 600kPa pressure. Find the specific compression work and the efficiency of the compressor
A 4-turn coil 2.0cm in diameter is rotated at 20 rev/s about an axis perpendicular to a uniform magnetic field. What is the magnetic field strength
A converging lens has a focal length of 12.5 cm . For each of two objects located to the left of the lens, one at a distance of s1 = 18.5 cm and the other at a distance of s2 = 8.00 cm, determine the following
a hydraulic lift in a garage has two pistons a small one of cross-sectional area 4.10cm2 and a large one of
What are the variables that can change the resistance or resistivity of a play dough experiment?
An object falls because of gravity at a rate of -9.80 m/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo= 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
Find the energy of a photon that is emitted when an electron in a hydrogen atom undergoes a transition from the n=7 level
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