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In the room-temperature 1H spectrum of methanol. no spin-spin coupling is observed. but when a methanol sample is cooled to -41°C, the exchange rate of the hydroxyl proton slows sufficiently so that splitting is observed. Sketch spectra for methanol at the two temperatures.
The magnitude of the horizontal(to the right) for F1 is 5kN and F1 + F2 + F3 = 0. What are the magnitude of F2 and F3?
Steam at 0.2 Mpa and 300 degrees Celsius is mixed with cold water at 20 degrees celsius and 0.2 MPa to produce 20 kg/s of saturated liquid water at 0.2 MPa. Find the required steam and cold water flow rates.
The water is initially at room temperature (293 K). Water boils at 373 K. How much energy must be added to the water by heating it in order for it to start boiling?
Determine the force P and the tension of the rope and calculate the tension in the rope when the elevator is moving upward at a constant acceleration.
a particle travels along the circular path x2 y2 r2. if the y component of the particles velocity is vy 2r cos 2t
Couette Flow Velocity Distribution, Using the log law, determine the velocity distribution for Couette flow between parallel plates a distance h apart, with U = the velocity of the top plate.
A short post AB has a commercially manufactured eyebolt screwed into its end. Three cables attahced to the eyebolt apply forces shown.
A rigid tank contains 1.5 kg of water at 120°C and 500 kPa. Now 22 kJ of shaft work is done on the system and the final temperature in the tank is 95°C. If the entropy change of water is zero and the surroundings are at 15°C, determine
air is compressed by a 30 kw compressor from p1 to p2. the air temperature is maintained constant
water is pumped from a lake to a storage tank 20 m above at a rate of 70 ls while consuming 20.4 kw of electric power.
Steam @ 10 MPa, 600 degrees celcius enters the first-stage turbine of an ideal Rankine cycle with reheat. The steam leaving the reheat section of the steam generator is @ 500 degrees celcius
water steam at 3mpa and 400oc is expanded to 100kpa in an adiabatic turbine with an isentropic efficiency of 92.
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