What temperature exists inside a solar collector (effective collection area of 15 m2 ) on a bright sunny day when the outside temperature is +20.°C?
Assume that the collector is thermally insulated, that the sun irradiates the collector with a power per unit area of 600 W/m2, and that the collector acts as a perfect black body.
A) 107°C
B) 154°C
C) 93°C
D) 73°C
E) 33°C
C
You might also like to view...
To increase the applied torque one can
A. Increase the force B. Increase the lever arm by moving to the end of the lever C. Increase the lever arm by applying the force perpendicularly to the lever D. All of the above E. None of the above
If you strip electrons from an atom, the atom becomes a
A) positive ion. B) negative ion. C) different element.
A tornado ______________ is issued when a tornado has been sighted or indicated on radar
a. warning b. notice c. advisory d. ticket
If an object isn’t accelerating, no external force is acting on it
1.True 2.False