The sound of a bird singing is given as 5 dB. What is the intensity of the sound of a bird singing?
a. 
b. 
c. 
d. 
e. 
d.
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Power: What is the net power needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s in 4.00 seconds?
A. 100 kW B. 10.0 kW C. 140 kW D. 14.0 kW E. 275 kW
During the Dark Ages in Europe, the scientific work of the ancient Greeks was preserved and further developed primarily by scholars in
A) Baghdad. B) Greece. C) Rome. D) India. E) China.
The force needed to make an object move in a circle is
a. centripetal force b. weight c. kinetic friction d. static friction e. none of the above
Propanol (C3H8O) is boiled in a container at 101 kPa and where the surface temperature is 120ºC. Its saturation temperature is 97.4ºC and its heat of fusion is 697 kJ/kg. Estimate the heat transfer per unit area.
What will be an ideal response?