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Calculate the heat-removal factor and the duct flow factor for a collector having an overall heat loss coefficient of 6 W/ (m2.K) constructed of aluminum fins and tubes. Tube to tube center distance is 15 cm; fin and tube thicknesses are 0.05 cm; tube diameter is 1.2 cm; fluid heat transfer coefficient is 1200 W/ (m2.K); and the cover transmittance to solar radiation is 0.9 and is independent of direction. The solar absorbance of the absorber plate is 0.9; the
Collector is 1 m wide and 3 m long; the water flow rate is 0.02 kg/sec. The inlet water temperature is 330 K.
Interaction of X-rays With Matter Elaborating the 3 principle modes through which X-rays interact along with matter. Photoelectric effect, Pair Production Compton Effect,. Sel
A bar has a 20N weight at one end. You have a weight of 15N to hang somewhere on the bar so that the bar is in equilibrium. Where would you hang the 15 N weight on each of these ba
Until the time of Einstein, mass and energy were considered as two different physical quantities. But in 1905, with the help of postulates of the special theory of relativity Einst
what different is between photons? Answer; the difference between photons depends to their frequency, and frequency depends to the number of CPH in structure of photon. Thus
what are isotopes?
Q. Illustrate what is larger the force the earth exerts on you or the force you exert on the earth? Answer:- A non-scientist's preliminary stab at this If you are talking
Why can''t I fly
Displacement: - The modification in position of a body in a certain direction is known as displacement. It is a vector function and its unit in SI system is meter.
Distinguish between a terrestrial telescope and an astronomical telescope. Explain Rams dens' eye piece with the help of a neat diagram. Illustrate its advantages and disadvantages
A 0.15 kg glider is moving to the right on frictionless horizontal air track with speed of 0.8 m\s. It has a head on collision with 0.3 kg glider that is moving to the left with a
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