Friction
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Unanswered Posts
Analysis of structures
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DYNAMICS
A balloon rises from the ground with a constant acceleration of 4ft per sec^2. Five seconds later, a stone is thrown vertically up from the launching site. What must be the minimum initial velocity of the stone for it to just touch the balloon? Note that the balloon and stone have the same velocity at contact.
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Differential Equation xdy-[y+xy^3(1+lnx)]dx=0
Please hep me to obtain the general solution
xdy-[y+xy3(1+lnx)]dx=0
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Sunk cost of a concrete mixer
A concrete mixer was bought for P30,000 six years ago. It will have a salvage value of P3,000 four years from now. It is sold now at P8,000. What is the sunk cost if the depreciation used is sinking fund method at 6%? Hint: sunk cost is the difference between the book value and the selling price.
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Need this badly today
What work is done on a level track in bringing the velocity of a train weighing 200metric tons from zero to 45 kph, if the frictional resistance at any velocity is 45N/ton, and if the change in speed is accomplished in length of 1000m? (Ans. 26780.95 KN/m)
C. If the track were a 1% upgrade, what would be the additional work to be done?
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Algebra
A company has a certain number of machines of equal capacity that produced a total of 180 pieces each working day. If two machines breakdown, the workload of the remaining machines is increased by three pices per day to maintain production. Find the number of machines?
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[HELP] Method of Section and Joints
Please help me solve this one!
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solution needed
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Algebra
A 1,260-galloon tank is filled by two pipes in as many as the smaller pipe brings in galloons per minute. How long will it take each pipe to fill the tank if the larger pipe brings in one galloon per minute more than the smaller pipe?
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