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A ball is dropped from a boat so that it strikes the surface of a lake with a speed of 16.5ft/s. While in the water the ball experiences an acceleration of a = 10 - 0.8v, where a and v are expressed in ft/s^2 and ft/s, respectively. Knowing the ball takes 3 s to reach the borrom of the lake, determine (a) the depth of the lake, (b) the speed of the ball when it hits the bottom of the lake.
a ten-station rotary indexing machine performs nine machining operations at nine workstations and the tenth station is
Effective Matching of Surface Roughness, Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4
A hemispherical dome is filled with water. The dome arrangement weighs 28kN and is fastened to the floor by bolts equally spaced
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
question a soap bubble with walls 398 thick floats in air. if this bubble is illuminated perpendicularly with sunlight
steam enters the first-stage turbine shown in fig. 2 at 40 bar and 500degc with a volumetric flownbsprate of 90 m3min.
a horizontal circular cylinder of diameter d 0.2m and length 2m is elastically mounted on two springs and towing tank
an industrial water shutoff valve is designed to operate with 30 lb of effort force. The valve will encounter 200 lb of resistance force applied to a 1.5 in. diameter axle. what is the required wheel diameter to overcome the resistance force?
Determine the resulting change
question 1 a force of 750 n acts on point a in the x direction where the cables ab ac and ad are joined as shown in
A paperclip is made of wire 1.25mm in diameter. If the original material from which the wire is made was 15mm in diameter, calculate the longitudinal and diametrical engineering and true strains that the wire has undergone during processing.
consider a household 120 v two-plug electric outlet protected by a 15 a circuit breaker. a you plug in a hair dryer and
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