What is the speed of sound in the air inside a furnace where the temperature is 500 degrees Celsius (773 Kelvin)?
559 m/s
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If Star A is twice as far as Star B, and they are identical in all other ways, then the brightness of Star A would be
A. the same brightness as Star B. B. twice the brightness of Star B. C. one-fourth the brightness of Star B. D. four times the brightness of Star B. E. one-half the brightness of Star B.
The 3 K background radiation is just the redshifted gamma wavelength radiation of the decoupling
Indicate whether the statement is true or false
A 406.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K
How much heat must the smelter produce to completely melt the copper bar? (The specific heat for copper is 386 J/kg•K, the heat of fusion for copper is 205 kJ/kg, and its melting point is 1357 K.) A) 1.66 × 1011 kJ B) 2.96 × 105 kJ C) 2.49 × 105 kJ D) 1.66 × 108 kJ
Dense biomass and tremendous species diversity characterizes the
What will be an ideal response?