Shapley found the Sun is located about halfway out the disk from the center of the disk of the Galaxy
Indicate whether the statement is true or false
TRUE
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What is not used in determining a distance from spectroscopic parallax?
A: apparent brightness B: temperature from spectrum C: H-R Diagram D: inverse square law E: none of the above- they're all used!
The open universe would require ?o be less than zero
Indicate whether the statement is true or false
In gas turbine recuperators, the exhaust gases are used to heat the incoming air and Cmin/Cmax is therefore approximately equal to unity. Show that for this case e = NTU/(1 + NTU) for counterflow and e = 1/2 (1 – e– 2NTU) for parallel flow.
GIVEN
• Gas turbine recuperator
• Cmin /Cmax ? 1
FIND Show that
(a) e = NTU/(1 + NTU) for counterflow
(b) e = 1/2 (1 – e– 2NTU) for parallel flow
SKETCH
Determine the number of significant figures in 0.055 cm
What will be an ideal response?