The _____________ is 18 years and 11 1/3 days long
a. sidereal period
b. synodic period
c. eclipse season
d. saros cycle
e. eclipse year
D
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Derive an equation of the form hc = f(T, D, U) for turbulent flow of water through a long tube in the temperature range between 20° and 100°C.
GIVEN
• Turbulent water flow through a long tube
• Water temperature range (Tb) = 20°C to 100°C FIND
• An expression of the form h c= f(T, D, U)
ASSUMPTIONS
• Steady state
• Variation of properties with temperature can be approximated with a power law
• Fully developed flow
• Water is being heated
SKETCH
PROPERTIES AND CONSTANTS
for water
Gamma rays travel faster than visible light.
a. true b. false
The Sun is on your meridian, and you have a UT clock that tells you it is midnight in Greenwich. What is your longitude?
A) 12° west of Greenwich B) 12° east of Greenwich C) 60° west of Greenwich D) 60° east of Greenwich E) 180° of longitude from Greenwich
The rings of Uranus and Neptune are found:
A) by the Hubble Space Telescope. B) above their equators. C) in the ecliptic plane. D) outside the Roche limit. E) All of the above.