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A geothermal power souce is used to operate a plant to produce oxygen. A deep well of water with volume 1000 m3 at initial temperature 100 Celsius is used as the power source for the plant. There is an infinite lake nearby at a temperature 5 Celcius. The plant will separate O2 from the air at 1 atm pressure and 20o Celcius. The air is a mix of ideal gases (O2 and N2) with mole fractions 1/5 for 02 and 4/5 for N2.
Assuming Carnot efficiency, how many moles of 02 can be separated out before the power source is depleted (remember: the temperature of the well decreases as energy is extracted from it).
A mirror creates an image of magnification ?1/3. (a) Is the image upright or inverted? (b) If the object is 7.75 cm tall, what is the height of the image
the near point of a given individual's eyes is 55cm. what focal length corrective lens should be prescribed so that an object can be clearly seen when placed at 25cm in front of the eye
a glider of length l moves through a stationary photogate on an air track. a photogate is a device that measures the
A 0.015 kg record with a radius of 15 cm rotates with an angular speed of 33(1/3) rpm. Find the angular momentum of the record
A force vector has a magnitude of 589 newtons and points at an angle 43o of below the positive x axis. What are (a) the x scalar component and (b) the y scalar component of the vector?
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. calculate the change in entropy of the boiling water
Find the the difference between the frequency of the wave that returns to the police car after reflecting from the speeder's car, and the original frequency emitted by the police car.
A parallel-plate capacitor is formed from two circular 20-cm-diameter plates spaced 1.0 mm apart. What is the charge (in nC) on the positive plate
A spectral line from the left side of Saturn's rings, as you see them, is at a wavelength slightly shorter than the same spectral line measured from the right side of Saturn's rings. Which way (direction) is Saturn rotating and why?
A pitcher pitches a baseball of mass 0.20 kilogram. The baseball arrives at home plate with a speed of 40 m/s and is batted directly back to the pitcher with a return speed of 50 m/s. Obtain the magnitude of the change of momentum of the ball
The pitch of the sound from a race car engine drops the musical interval of a FIFTH when it passes the spectators. How fast is the race car moving
the surface charge density on an infinite charged plane is - 1.5010-6 cm2.a proton is shot straight away from the plane
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