What is black body? : quantum physics
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How does the towel dry out hands ?
The gas that used in bulb is............? a) Oxygen b)nitrogen c)hydrogen d)co2
Explain what is the rectilinear propagation of light?
Tell me how we are getting light from electrical bulb?
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A solar collection has been installed to heat water. A large water tank has a volume of 5.0 x 105 cm3. The area of the solar collectors is 8m2. (2 meters by 3 meters). If the water in the tank starts out with a temperature of 30°C in the morning, what is its temperature in the evening after the sun has set?