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The need arises in a laboratory for 2000cm3 of an antifreeze consisting of a 30 mole-percent solution methanol in water. what volumes of pure methanol and of pure water at 25 degrees Celsius must be mixed to form the 2000cm3 of antifreeze, also at 25 degrees Celsius?
discuss whether it would be advisable to hot work or cold work the following metals and alloys on the basis of melting
helium initially at 327 deg. c and 100 kpa is contained in a frictionless piston-cylinder. the system is slowly cooled
water at 10 kpa and 40 c enters the pump of a rankine cycle. the pump has an effiiciency of 82 and pumps the water up
find the following equivalent amounts if the interest rate is 8 compounded annually.a the present value of series of
If the minimum attractive rate of return is20% per year, determine the one machine that should be selected on the basis of a rate of return analysis.
the flywheel of a small punching machine rotates at 360 rpm. each punching operation requires 1500 ft-lb of work and it
the acceleration of a particle is defind by the relation a - 0.8 v where a is expressed in ms2 and v ms. knowing
a 0.010 kg 10 gram round ball of solid lead at 280 k initially moves at 400 ms passing horizontally through atmospheric
calculate the flame temperature of normal octane liquid burning in air at an equivalence ratio of 0.5. assume there is
what would be the effect on the calculated value of the vane efficiency for mass of jockey in error by 0.001 measurements.
Air enters an adiabatic duct of L/D = 40 at V1 = 170 m/s and T1 = 300 K. The flow at the exit is choked. What is the average friction factor in the duct?
a 600 mm diameter wheel rolls without slipping on a horizontal surface as shown. rod ab is attached to the wheel at a
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