The element symbol C stands for cobalt
a. True
b. False
Indicate whether the statement is true or false
False
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The bacteria species known as Deinococcus radiodurans has evolved to survive extreme levels of
A) cold B) heat C) salinity D) radiation
When an electrical switch is closed or opened in the vicinity of an operating AM radio, a burst of static can be heard. Which of the following, involving the throwing of the switch, would likely be the cause for this static?
a. The sound from the switching is the source of waves. b. Unnoticed lightning hits nearby every time the switch is thrown. c. Static happens without any cause. d. Electrons are accelerated during the switching process.
A simple magnifier of refractive power 15.0 D is used to observe a beetle on a student’s desk. If the image of the beetle is formed at her nearpoint of 25 cm, how far is the beetle from the magnifier?
A. 50 cm B. 6.3 cm C. 4.2 cm D. 17 cm
This diagram represents the life track of a 1 solar-mass star from its pre-main-sequence stages to just before its final death. Refer to the life stages labeled with roman numerals. During which stage does the star have an inert (nonfusing) carbon core surrounded by shells of helium and hydrogen fusion?
A) Stage ii B) Stage iii C) Stage iv D) Stage vi E) Stage viii