Interferometry connects two or more separate telescopes only in the optical band of the electromagnetic spectrum
a. True
b. False
Indicate whether the statement is true or false
False
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_____ is a telescope that forms images by bending light with a lens
A) A refracting telescope B) A reflecting telescope C) The Newtonian telescope D) The Gregorian telescope
Light of wavelength 105 nm falls on a metal surface for which the work function is 5.00 eV. What is the minimum de Broglie wavelength of the photoelectrons emitted from this metal?
(h = 6.626 × 10-34 J ? s = 4.14 × 10-15 eV ? s, c = 3.00 × 108 m/s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J) A) 0.24 nm B) 0.33 nm C) 0.47 nm D) 0.66 nm E) 0.94 nm
Breaks in the geologic record that result from
locally unrecorded intervals of depositing in sedimentary layers are called a)anticlines. b)intrusive sills. c)unconformities. d)warped or folded time.
A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2% grade (that is, the "rise" is 2% of the "run")
What is the component of the helicopter's velocity perpendicular to the sloping surface of the hill? A) 8.9 m/s B) 220 m/s C) 435 m/s D) 444 m/s