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Suppose that you were to direct photons of various wavelengths at the Sun and wish to know whether they would be reflected or absorbed when they got there. Using Figure 21.4, plot (qualitatively) the fraction absorbed vs. wavelength for photons incident on the Sun. On the same graph, plot the fraction reflected vs. wavelength.
an intermediate heat exchanger in a cascade refrigeration system exchanges heat between a condensing refrigerant in the
a piston-cylinder device initially contains steam at 200 kpa and 200c. a linear spring is touching the piston but
a single degree of freedom translational vibrating system has a concentrated mass weighing 77.2 lbs a spring constant
The following cycle involves 3 kg of air. From 1 to 2 is polytropic compression where P1=150 kPa, T1=360 K, P2=750 kPa, V2=0.54 m^3 and n=1.2 . From 2 to 3 is constant pressure cooling and from 3 to 1 is constant temperature heating. Determine the to..
State mathematically Newtona's law of viscosity. Water moves over a flat surface. At a point on the surface the velocity gradient is 60 s-1. The viscosity of water is 0.0012 Ns/m2. Calculate the wall shear stress.
If the total entropy of the cell must be ten times its ground state value, what should the total energy of the cell be?
calculate the nusselt number and the convective heat transfer coefficient for water at a bulk temperature of 32oc
a centerfielder throws a baseball 250 ft from the back wall to second base. it takes 2.84 seconds to reach the base.
the gravitational force exerted on a baseball is 2.12 n down. a pitcher throws the ball horizontally with velocity 12.5
compute the wet bulb temperature of moist air that has been cooled and dehumified from 25 c and 80 percent relative
The uniform 6-kg slender rod rests on the top center of the 3kg block. If the coefficients of static friction at the points of contact are ua=.4 and ub=.6, and uc=.3, determine the largest couple moment M which can be applied to the rod without ca..
block b has a mass m and is released from rest when it is on top of cart a which has a mass of 3m. determine the
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