The type of EM radiation that has wavelength just a bit shorter than that of visible light is __________
Fill in the blank(s) with correct word
ultraviolet
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How do we know Earth has a liquid core?
A. P waves pass through it, but S waves do not. B. Both S and P waves pass through it. C. Because we have used X-rays to probe it. D. S waves pass through it, but P waves do not.
Claudius Ptolemy created a mathematical model of the Aristotelian Universe in which a planet followed a small circle called the _____ that slid around a larger circle called the deferent
A) heterocycle B) epicycle C) pericycle D) hemicycle
A particle (mass = 6.0 mg) moves with a speed of 4.0 km/s in a direction that makes an angle of 37° above the positive x axis in the xy plane. At the instant it enters a magnetic field of (5.0
) mT it experiences an acceleration of (8.0
) m/s2. What is the charge of the particle?
A. ?4.8 ?C B. 4.0 ?C C. ?4.0 ?C D. 4.8 ?C E. ?5.0 ?C
Fresnel lenses are
a. made of mirror segments. b. made of the surface portions of a regular lens. c. found in some auto headlamps and theater lights and rear windows of RVs. d. all of the above.