Helium-neon laser light (l = 632.8 nm) is sent through a single slit of width 0.41 mm. What is the width of the central maximum on a screen 1.0 m in back of the slit? (1 nm = 10-9 m)
a. 5.3 mm
c. 3.1 mm
b. 4.2 mm
d. 2.0 mm
C
Physics & Space Science
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Which stellar population has highly elliptical orbits?
a. Pop I extreme b. Pop I intermediate c. Pop II intermediate d. Pop II extreme
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Wrought iron is
(a) Heated and then rapidly quenched into water (b) Packed in carbon to harden the iron (c) Heated in carbon monoxide (d) Deformed into shape
Physics & Space Science
An oak tree was planted ago. How many seconds does this correspond to? (Do not take leap days into account.)
A) 6.9 × 108 B) 1.2 × 107 C) 2.9 × 107 D) 2.8 × 108
Physics & Space Science
A(n) ______________ glacier is one in which a valley floor is covered with glacial ice
Fill in the blank(s) with correct word
Physics & Space Science