The current W3C style sheet standards include modules for both CSS Levels 3 and 4.
Answer the following statement true (T) or false (F)
True
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According to the solar nebula theory, planetary development in the solar nebula began with:
A) the growth of dust grains. B) the formation of ice caps. C) the fission of helium atoms. D) the fission of hydrogen atoms.
The unit kilowatt-hour is a unit of
A) energy. B) momentum. C) power. D) time.
A charge is placed on a spherical conductor of radius r1. This sphere is then connected to a distant sphere of radius r2 (not equal to r1) by a conducting wire. After the charges on the spheres are in equilibrium,
A.
B.
C.
D.
.E.
.Light shines through atomic hydrogen gas that was initially in its ground state. You observe that after awhile much of the hydrogen gas has been excited to its n = 5 state
What wavelength of light entering the gas caused this excitation? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 110 nm B) 91.4 nm C) 95.2 nm D) 2280 nm