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Determine the flow distribution in the water supply system shown using the Hardy Cross method. The piezometric head at location A is HA ¼ 30 m, and the head at the reservoir is HF ¼ 0 m. For all six pipes, f ¼ 0.03 and D ¼ 75 mm. The flow demands at C and D are QC ¼ 5 L=s and QD ¼ 12 L=s. After determining the flows, compute the piezometric heads at locations B through E.
A uniform bar of metal, 0.40 m long, with a diameter of 2.0 cm, has a mass of 1.1 kg. Find the wavelength of the longitudinal wave in the metal, in mm
A 200 resistor has a current of 1.5A running through it and is connected in series with a 300 resistor. what is the emf of the battery to which the resistors are connected?
Two electrons in an atom are separated by 1.3 × 10?10 m, the typical size of an atom. What is the force between them
In a series RLC circuit, the resistance is 51 O, the capacitance is 39 µF and the inductance is 62 mH. Find the power supplied by the source
A jet plane lands with a velocity of +103 m/s and can accelerate at a maximum rate of -5.00 m/s2 as it comes to rest. find the minimum time needed before it can come to rest
A lens has a focal length of 40 mm magnifier. An object viewed with the magnifier is 5.3 mm tall, What is the angular magnification of the magnifier
Roughly 3.97 % of what you exhale is carbon dioxide. Assume that 22.4 L is the volume of 1 mole (6.02·1023 molecules) of carbon dioxide and that you exhale 0.539 L per breath. how many carbon dioxide molecules you breathe out each day
A beam of sunlight encounters a plate of crown glass at a 36.50° angle of incidence. Find the angle between the violet ray and the red ray
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
Antwan raised a 12.0-N physics book from a table 75 cm above the floor to a shelf 2.15 m above the floor. What was the change in the potential energy of the system?
a rocket is projected upward from the earths surface rre with an initial speed v0 that carries it to a distance r1.5
A 10kg object is brought to the moon, where the acceleration due to gravity is only one-sixth of that on earth. What is the mass of the object on the moon
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