If the intensity of radiation from the sun is 
at a distance of 
at what distance is the intensity 
A. 
B. 
C. 
D. 
E. less than 
km
C.
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Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The work you do on the crate is __________
Fill in the blank(s) with correct word
A 1.30-m long gas column that is open at one end and closed at the other end has a fundamental resonant frequency 80.0 Hz. What is the speed of sound in this gas?
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Ten kilograms of water at 0°C is mixed with 10 kg of water at 100°C. The change in entropy (in cal/K) of the system is
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