Nearly all the elements found in nature were formed inside stars, EXCEPT for
A) carbon and silicon.
B) hydrogen and helium.
C) helium and carbon.
D) silver and technetium.
E) uranium and radium.
B
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Saturn's rings are composed of icy particles
Indicate whether the statement is true or false
An ______style only affects the content within the tags in which it appears.
A. inline B. internal C. interface D. intermittent
Consider a plane flying with groundspeed Vg and airspeed Va in a wind with velocity V. Which of the following relationships is true?
A) Vg = Va + V B) Vg can be less than Va + V C) Vg can be greater than Va + V D) Vg can have any value between Va + V and Va - V E) Vg = Va - V
Which of the following is produced by the thermal vibrations of molecules?
A) shock waves B) visible C) pressure waves D) ultra-violet E) infra-red