A transformation occurs in a material, and the Gibbs free energy change in the material is negative. The transformation is _____________.
Fill in the blank(s) with the appropriate word(s).
spontaneous
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Due to inertia, perhaps a railroad train in motion should continue moving indefinitely when its engine is turned off. This is not observed because railroad trains
A) aren't massive enough. B) are too heavy. C) ride on straight tracks. D) encounter opposing forces.
Refer to the graph. The velocity of this object at the start of the motion is
A. negative. B. positive. C. zero (it is not moving). D. It is not possible to tell from the graph
A grating with 8000 slits space over 2.54 cm is illuminated by light of a wavelength of 546 nm. What is the angle for the third order maximum?
a. 
b. 
c. 
d. 
Diagram 7-1 shows a plot of the temperature of the Sun as a function of distance above the bottom of the photosphere. What is the temperature of the Sun at a distance of 2,000 km?