In a folded sequence of rocks we find older rocks at the axis of the fold and younger rocks away from the fold axis. The fold is
A) called a syncline.
B) called an anticline.
C) plunging.
D) tilted.
Answer: B
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When light passing through a prism undergoes dispersion, the effect is a result of:
a. different wavelengths traveling at different speeds. b. different wavelengths having different indices of refraction. c. different wavelengths refracting differently. d. All of the above.
Energy in Nuclear Reactions: An excited src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f440g1q10g6.jpg" style="vertical-align: -21.0px;" />Ba: 143.922845 u
U* nucleus undergoes fission into two fragments as follows:
U*? 
Ba + 
KrThe following atomic masses are known:
Kr: 91.926270 u
U*: 236.045563 uWhat is the reaction energy released during this fission reaction? (1 u = 931.5 MeV/c2)
A. 150 MeV
B. 160 MeV
C. 170 MeV
D. 180 MeV
E. 190 MeV
What is thought to be at the center of most galaxies?
A. an open cluster B. a massive black hole C. a regularly exploding nova D. an unusually large and bright main sequence star E. a globular cluster
Two optically flat glass plates, 16.0 cm long, are in contact at one end and separated by 0.0200 mm at the other end. The space between the plates is occupied by oil with index of refraction 1.45. The index of refraction of the glass plates is 1.55
The plates are illuminated at normal incidence with monochromatic light, and fringes are observed. If the dark fringes are spaced 2.00 mm apart, what is the wavelength of the monochromatic light? A) 425 nm B) 475 nm C) 525 nm D) 675 nm E) 725 nm