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Calculate the overall heat-loss coefficient for a solar collector with a single glass cover having the following specifications (neglect edge effects):
Spacing between the plate and the cover 5 cm
Plate emittance 0.2
Glass emittance 0.88
Ambient air temperature 283 K
Back insulation thickness 3 cm
Conductivity of back insulation material 0.04 W/(m.K)
Mean plate temperature 340 K
Collector tilts 45°
Wind - heat transfer coefficient 10 W/(m2.K)
Question 1 Discuss the physical characteristics of an X-ray beam. Write a note on factors influencing the quality and intensity of the X-ray beam Question 2 Explain the const
Awhat is angle of projection of body thrown from inclined plane of 37degree so that body hits inclined plane normalysk question #Minimum 100 words accepted#
Explanation of formation of ring pattern system
For this circuit which of the subsequent represents a correct way of connecting an ammeter to measure the current through resistor R2? Answer: An ammeter acts simila
Two forces-55-N clockwise and 35-N counters clockwise-are applied to a merry- go-round with a diameter of 4.5 m. What is the net torque?
The high-dive board at most pools is 3.00 m above the water. A diving instructor dives off the board and strikes the water 1.18 s later. a. What was the initial velocity of the
write principles,construction & working of a moving coil galvanometer
Two identical particles every having a charge of 1.0 coulombs are separated by 2.0 meters. What is the electric potential because of the pair of charged particles at the point midw
Determine where r is the position vector.
What are the consequences of dispersion? The main familiar result of dispersion is the splitting up of the composite white light within its constituent colours as into a rainbo
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