Once carbon is formed in massive star cores, the majority of nuclei formed from then on will belong to even numbered elements, due to addition to more helium nuclei as alpha particles
Indicate whether the statement is true or false
TRUE
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When a gas expands adiabatically,
A) the internal energy of the gas decreases. B) the internal energy of the gas increases. C) there is no work done by the gas. D) work is done on the gas. E) heat flows out of the system.
When a diffraction grating having 5000 lines/cmis illuminated by monochromatic light, the angle between the central maximum and the fourth order maximum is 47.2°. What is the wavelength of the light?
A) 367 nm B) 183 nm C) 138 nm D) 637 nm
In an X-ray diffraction experiment using X-rays of ? = 0.500 × 10?10 m, a first-order maximum occurred at 5.00°. Find the crystal plane spacing.
A. 2.87 × 10?10 m B. 1.36 × 10?10 m C. 6.24 × 10?9 m D. 1.93 × 10?9 m E. 5.74 × 10?9 m
The Andes and the Sierra Nevada Mountains began to form during the Mesozoic due to
A) the formation of the Atlantic Ocean. B) subduction of Pacific oceanic crust beneath North and South American continental crust. C) rifting between North America and Africa. D) meteorite bombardment in Mexico.