An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low-density hot gas
Indicate whether the statement is true or false
FALSE
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An aircraft performs a maneuver called an "aileron roll." During this maneuver, the plane turns like a screw as it maintains a straight flight path, which sets the wings in circular motion
If it takes it 35 s to complete the circle and the wingspan of the plane is 11 m, what is the acceleration of the wing tip? A) 5.6 m/s2 B) 0.99 m/s2 C) 0.18 m/s2 D) 1.0 m/s2
To estimate the central temperature of the Sun, scientists ________
A) use hot gas to create a small Sun in a laboratory B) send probes to measure the temperature C) monitor changes in Earth's atmosphere D) use computer models to predict interior conditions
According to the Arrhenius theory, basic properties are caused by ______________ ions
Fill in the blank(s) with correct word
What is a spectroscopic binary?
A. a visual binary in which one or both stars have peculiar spectra B. A spectroscopic binary looks, to us on Earth, like a single star, but its spectrum shows double lines that shift. C. a visual binary for which we have spectra of both stars D. a visual binary that is shown by its spectrum to be a single star