The local solar time at 135°W is 12:00 noon. What is the longitude of an observer who sees the full moon on her meridian at this time?
a. 45°E
b. –45°E
c. 135°E
d. 135°W
e. None of the above
a
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It is desired to conduct a diffraction experiment with neutrons of a wavelength of 0.1 nm. What is the kinetic energy of these neutrons in both joules and electron-volts?
What will be an ideal response?
One hundred lbm of air in a pressure tank is cooled from 180ºF and 160 psia to 80ºF when the surroundings are at 70ºF. Determine the tank pressure at 80ºF.
What will be an ideal response?
Where are S-type asteroids typically found in the Solar System?
a. in the Kuiper belt b. the inner asteroid belt c. the outer asteroid belt d. at the Lagrange points of Jupiter e. near Earth
Calculate the displacement amplitude (in m) of a 20 kHz sound wave in helium if it has a pressure amplitude of 8.0 × 10^?3 N/m2 . (? = 0.179 kg/m3, v = 972 m/s.)
a. 2.9 × 10^?10 b. 3.7 × 10^?10 c. 7.8 × 10^?9 d. 2.4 × 10^?9 e. 1.9 × 10^?10