Diffraction Gratings: What is the slit spacing of a diffraction grating necessary so that 600-nm light will produce a first order principal maximum at 25.0° away from the centerline?
A. 1.42 ?m
B. 2.01 ?m
C. 3.12 ?m
D. 4.12 ?m
E. 5.44 ?m
Answer: A
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a) Trichromatic b) Receptive c) Subtractive d) Additive
The Local Group is an example of a
A) galaxy cluster B) galaxy C) supercluster D) planetary system
Nylon is a polyamide; Dacron is a(n) ______________
Fill in the blank(s) with correct word
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s2. What is the mass of Zygo? (G = 6.67 × 10-11 N ? m2/kg2)
A) 2.4 × 1019 kg B) 4.8 × 1019 kg C) 1.2 × 1020 kg D) 2.4 × 1020 kg E) 4.8 × 1020 kg