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Find the discharge in the pumping system using the Hardy Cross method. The pump curve is HP ¼ 100 2 50Q 2 850Q2, with head in m and discharge in m3=s. Use R1 ¼ 5000 s2=m5, R2 ¼ 300 s2=m5, HA ¼ 35 m, and HB ¼ 10 m.
On a drive from your home to town, you wish to average 56 mph. What average speed must you maintain in order to have an overall average speed of 56 mph
At this point, person doing the laundry opens the lid, and a safety switch turns off the washer. The tub smoothly slows to rest in 11-s. Through how many revolutions does the tub turn while it is in motion.
The atom in a regular crystal can act as slits for light of the appropriate wavelength, Find what wavelengths do you think would be appropriate
A block of mass 4.0 kg is sitting on a frhorizontal ictionless surface and is pulled with a rope that makes an angle of 30 with the horizontal, as shown in the drawing below. The tension in the rope is 25 N. What is the acceleration of the block a..
A motorcycle is travelling at a constant velocity of 30ms. The motor is in high gear and emits a hum of 700Hz. find the period of the sound waves emitted from the motorcycle
A rower can row at 3.77 m/s in still water. He wants to row directly across a river 252 wide with a constant current of 1.33 m/s. calculate how long will it take him to cross the river
An inductor (L = 400 mH), a capacitor (C = 5.30 μF), a resistor(R = 500 Ω) are connected in series. A 50.0 Hz AC generator connected in series to these elements producesa maximum current of 300 mA in the circuit.
Calculate the potential energy stored in the bow, if the arrow of mass 5.50 10-2 kg leaves the bow with a speed of 45.0 m/s. Assume that mechanical energy is conserved.
When a test charge q0 = 6 nC is placed at the origin, it experiences a force of 8 ? 10-4 N in the positive y direction. What is the electric field at the origin
a lens with a focal length of 15 cm is placed 45 cm in front of a lens with a focal length of 5.0 cm. how far from the
A 2658 N force is applied 2 cm from the axis of rotation and is parallel to the lever arm. A rotating body has an angular acceleration of 21rad/s2. A 185 N force is applied at the axis of rotation. A force is applied 73 cm away from the axis of rotat..
When a resistor is connected across the terminals of an acgenerator (115 V) that has a fixed frequency, there is a current of0.665 A in the resistor. When an inductor is connected across theterminals of the same generator, there is a current of 0...
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