When light is refracted, there is a change in its
A) frequency.
B) wavelength.
C) both of these
D) neither of these
Answer: B
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In the context of Jupiter's rings, which of the following happens if a moon comes inside the Roche limit?
A) Raw material for the moon is coalesced. B) Tidal forces overcome the moon's gravity. C) The continuous blast of micrometeorites condenses the ice on the moon's surface. D) Internal heat is generated to break the moon's crust, producing a grooved terrain.
Repeat Problem 9.23 for a tier of six horizontal 2.5-cm-OD tubes under similar thermal conditions.
GIVEN
? Saturated steam condensing on horizontal tubes
? Tube outside diameter (D) = 2.5 cm = 0.025 m
? Tube outer surface temperature (Ts) = 27°C
? Steam pressure (p) = 12 kPa
? Number of tubes (n) = 6
FIND
? The average heat transfer coefficient (hc)
ASSUMPTIONS
? Steady state
? Film condensation occurs
SKETCH
PROPERTIES AND CONSTANTS
From Appendix 2, Table 13, for saturated water at 12 kPa
What distinguishes work done by conservative versus nonconservative forces?
What will be an ideal response?
Apart from its distance from its parent star, what is the next most important factor that determines a planet's habitability?
A) whether it has a large moon B) the size of the planet C) the chemical composition of its atmosphere D) the chemical composition of its surface