Ps2 solutions echellette grating of 2500 blazes per millimeter. a. Calculate the reciprocal linear dispersion of the instrument for first ‐ order spectra. (2 points for set up, 2 points for answer) b. If 2.0 cm of the grating were illuminated, what is the first ‐ order resolving power of the monochromator? (2 points for set up, 1 point for answer)

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

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answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.