What is the maximum number of electrons that can occupy a 3d subshell?
a. 5
c. 10
b. 14
d. 18
C
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Seyfert galaxies appear similar to normal spirals with extremely luminous cores
a. True b. False Indicate whether the statement is true or false
An electron is moving with the speed of 1780 m/s. What is its de Broglie wavelength? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
A) 409 nm B) 302 nm C) 205 nm D) 420 nm E) 502 nm
A circuit consists of a 10-mH coil, a 12-W resistor, a 60-W resistor, a 9.0-V battery, and a switch, all in series. What is the time constant of this circuit?
a. 2.5 × 10^–3 s c. 1.4 × 10^–4 s b. 5.6 × 10^–4 s d. 9.0 × 10^–2 s
The intensity of sunlight falling on the earth is about 1.4 kW/m2 (before any gets absorbed by our atmosphere). At what rate does the sun emit light energy?
(The earth-sun distance = 1.5 × 108 km and the earth's radius = 6.4 × 103 km.) A) 4.0 × 1026 W B) 3.2 × 1022 W C) 7.2 × 1014 W D) 7.6 × 108 W