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 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.
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