Answer the following statement(s) true (T) or false (F)
1. Equation 
implies that a sinusoidal wave’s phase speed depends on its wavelength
1. FALSE
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Kinetic energy is conserved in
a. an inelastic collision. b. an elastic collision. c. any collision where two objects rebound off each other. d. none of the above.
Water able to be contained in the subsurface depends on
A) permeability. B) porosity. C) chemical composition. D) none of these
A solar-mass star will evolve off the main sequence when
A) it loses all its neutrinos, so fusion must cease. B) it completely runs out of hydrogen. C) it builds up a core of inert helium. D) it explodes as a violent nova. E) it expels a planetary nebula to cool off and release radiation.
A piece of wire 15 m long is cooled from 40°C to –9°C and the change in length is –12.7 mm.
(a) What is the linear coefficient of thermal expansion for this material? (b) Identify the material based upon the measured coefficient of thermal expansion.