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a) If 1,000 gallons per minute (gpm) of water are flowing through a 4-inch (inside diameter) pipe, what is the average velocity of the water in the pipe?
b) If the flow passes into a section of 2 inc pipe , what is the average velocity in the smaller pipe?
c) A common rule of thumb for trying to keep pumping cost low is to design for average fluid velocity of about 3ft/sec. What pipe diameter is requiered to obtain this average velocity with a volumetric flow rate of 1000gpm.
Batman and Robin are attempting to escape that dastardly villain, the Joker, by hiding in a large pool of water (n=1.33). The Joker stands gloating at the edge of the pool.
A charge of −1 Coulomb is placed at the 100-cm mark of the same meter stick. Elucidate is it possible to place a proton somewhere on the meter stick so that the net force on it due to the two charges is 0?
A particular guitar string is supposed to vibrate at 191- Hz, but it is measured to actually vibrate at 210- Hz. By what percent should the tension in string be changed to get the frequency to the correct value.
the speed of light in a certain material is measured to be 2.2*10^8 m/s. what is the index of refraction of this material
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
At one instant a bicyclist is 75m due east of a park's flagpole, going due south with a speed of 13.0 m/s. Then, 10s later, the cyclist is 65 m due north of flagpole, going due east with a speed of 20.0 m/s.
A layer of transparent plastic (n = 1.63) on glass (n = 1.52) looks dark when viewed in reflected light whose wavelength is 576 nm in vacuum. Find out the two smallest possible nonzero values for the thickness of the layer.
A planet of mass m = 7.05 × 1024 kg is orbiting in a circular path a star of mass M = 4.95 × 1029 kg. The radius of the orbit is R = 8.35 × 107 km
A broken piano emits frequencies from a low of 32.0 Hz to a high of about 4100 Hz. What is the shortest wavelength if the speed of sound in air is 342.50 m/s? Record the answer to three decimal places and include units in the answer.
A parachutist with a camera, both descending at a velocity of 12 m/s, releases that camera at an altitude of 120 m.
Determine magnitude of the force
A 35 kg block of ice slides down a frictionless incline 1.6 m along the diagonal and 0.63 m high, Find the magnitude of the worker's force. How much work is done on the block by the worker's force
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