Contrast Irr I and II in terms of structure
What will be an ideal response?
Irr I look somewhat like small-barred spirals; the LMC is an example. Irr II show more chaotic, filamentary structures, suggesting more violent explosive events.
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It takes less and less time to fuse heavier and heavier elements inside a high mass star
Indicate whether the statement is true or false
Venus has a highly eccentric orbit, accounting for its large temperature extremes
Indicate whether the statement is true or false
Infiltration can be reduced primarily by ________
a. insulation b. double pane windows c. weatherstripping d. lowering the thermostat e. furnace maintenance
If an x-ray beam of wavelength 1.4 × 10-10 m makes an angle of 30° with a set of planes in a crystal causing first order constructive interference, what is the plane spacing?
A) 0.28 nm B) 0.070 nm C) 0.32 nm D) 0.16 nm E) 0.14 nm