An electromagnetic wave with a peak magnetic field component of 1.59 × 10^?7 T has an associated peak electric field component of what value? (?0 = 4? × 10^?7 T?m/A, ?0 = 8.85 × 10^?12 C2/N?m2 and c = 3.00 × 10^8 m/s)
a. 2.10E–2 N/C
b. 5.30E–9 N/C
c. 4.77E+1 N/C
d. 1.89E+8 N/C
e. 5.99E–6 N/C
c
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In Heisenberg's formula, ?p ?x? h, the h symbolizes
A) Planck's constant. B) an average value of Planck's constant. C) the peak value of Planck's constant. D) Planck's constant divided by 2?. E) none of the above
Compared to our own Galaxy, elliptical galaxies
A) have bluer stars. B) show more internal structure. C) have no arms, but a better defined disk. D) have more dust. E) show no evidence of ongoing star formation.
If CP for an ideal gas is 35.4 J/mol×K, which of the following is CV for this gas?
a. 12.5 J/mol×K b. 20.8 J/mol×K c. 29.1 J/mol×K d. 27.1 J/mol×K e. 43.4 J/mol×K
What is the most abundant element in the interstellar medium?
a. carbon b. iron dust c. carbon dust d. helium e. hydrogen