What does molten rock solidify into?
a. basalt
b. marble
c. sandstone
d. quartzite
e. travertine
a
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Light shines through atomic hydrogen gas. It is seen that the gas absorbs light readily at a wavelength of 91.63 nm
What is the value of n of the level to which the hydrogen is being excited by the absorption of light of this wavelength? Assume that the most of the atoms in the gas are in the lowest level. (h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, the Rydberg constant is R = 1.097 × 107 m-1) A) 14 B) 16 C) 11 D) 21
A circuit containing an AC generator, a capacitor, an inductor, and a resistor has a high-Q resonance at 1 000 Hz. From greatest to least, rank the following contributions to the impedance of the circuit at that frequency and at lower and higher frequencies. Note any cases of equality in your ranking
(a) XC at 500 Hz (b) XC at 1 500 Hz (c) XL at 500 Hz (d) XL at 1 500 Hz (e) R at 1 000 Hz
1.(c) > (d) > (a) > (e) > (b) 2.(a) > (d) > (b) > (c) > (e) 3.(b) > (c) > (a) > (d) > (e) 4.(d) > (a) > (e) > (c) > (b)When referring to the "cgs" system, what does the "c", the "g", and the "s" stand for?
What will be an ideal response?
What is the magnitude of the magnetic force on a charged particle (Q = 5.0 ?C) moving with a speed of 80 km/s in the positive x direction at a point where Bx = 5.0 T, By = ?4.0 T, and Bz = 3.0 T?
a. 2.8 N b. 1.6 N c. 1.2 N d. 2.0 N e. 0.4 N