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Water at 20-C flows from a reservoir out a 100-m-long, 4-cm-diameter galvanized iron pipe to the atmosphere. The outlet is 20 m below the surface of the reservoir. What is the exit velocity
(a) assuming no losses in the pipe and
(b) including the losses? There is a square-edged entrance.
Sketch the EGL and the HGL for both (a) and (b).
calculate the energy content of 1 kg of natural uranium assuming complete fission. estimate an average energy per
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A 165 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a battery with emf of 21.3 V. If the 165 pF capacitor stores 112 pC of charge on its plates, what is the unknown capacitance.
In designing a transformer, an engineer knows she needs 240 V to come out of the secondary circuit. what is the ratio of primary voltage to primary turns
An object is placed 20 cm from a concave mirror of radius 19 cm. What is the magnification of the mirror
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A bullet with mass m = 5.21 g is moving horizontally at v = 434 m/s when it strikes a block of hardned steel with mass M = 14,8 kg (initially at rest). What is the impulse (kg m/s) exerted on the block
macie pulls a 40 kg rolling trunk by a strap angled at 30deg from the horizontal. she pulls with a force of 40 n and
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