Currently, the largest optical telescope mirrors have a diameter of
A) 1 m.
B) 2 m.
C) 5 m.
D) 10 m.
E) 100 m.
D
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Single-Slit Diffraction: A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum. If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit?
A. 825 nm B. 791 nm C. 757 nm D. 723 nm E. 689 nm
Compared to smaller clouds with small droplets, a big cloud with large droplets
A) absorbs more light. B) is darker. C) is more likely to produce rain. D) all the above E) none of the above
Which characteristic is NOT shared by the Moon and Mercury?
a. heavily cratered surface b. negligible atmosphere c. rotations altered by tides d. dense metallic core e. geologically inactive
For metals and ceramics to be superplastic, they must have a high ___________hardening rate.
Fill in the blank(s) with the appropriate word(s).