The two most plentiful elements in the universe are
A) hydrogen and oxygen.
B) nitrogen and helium.
C) carbon and oxygen.
D) lithium and helium.
E) hydrogen and helium.
E
You might also like to view...
A plane stress element on a bar in uniaxial stress has a tensile stress of ?? 5 78 MPa (see fig.). The maximum shear stress in the bar is approximately:
(A) 29 MPa
(B) 37 MPa
(C) 50 MPa
(D) 59 MPa
The slope of a velocity versus time graph gives
A) displacement. B) the distance traveled. C) acceleration. D) velocity.
Polarized light is to have its polarization plane rotated by 90°. In which of the following cases does the final beam have the greatest intensity? a. 3 polarizing filters, each rotate beam by 30°
b. 2 polarizing filters, both rotate beam by 45°. c. 1 polarizing filter, rotating beam by 90°. d. None of the above, polarized light can't be rotated.
Direct current is normally produced by a
A) battery. B) generator. C) both of these D) neither of these