Exclusion Principle: How many 2d electron states can an atom have?
A. 0
B. 4
C. 6
D. 8
E. 10
Answer: A
Physics & Space Science
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The density of a 2-cubic meter block of mass of 1000 kg is
A) 100 kg/m3. B) 200 kg/m3. C) 500 kg/m3. D) 1000 kg/m3. E) none of the above
Physics & Space Science
An electron microscope operates with electrons of kinetic energy 58 keV. What is the wavelength of these electrons? Assume this speed is not relativistic. (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, 1 eV = 1.60 × 10^?19 J, and me = 9.11 × 10^?31 kg)
a. 3.57E–20 m b. 7.69E–13 m c. 5.10E–12 m d. 2.28E–10 m e. 1.03E–11 m
Physics & Space Science
Two point charges of +2.00 ?C and +4.00 ?C are at the origin and at the point x = 0.000 m, y =
What will be an ideal response?
Physics & Space Science
Which of these colors of light has photons of lowest energy?
a. Blue b. Green c. Yellow d. Red
Physics & Space Science