A Blue Line in the Spectrum of the Hydrogen Atom $\lambda$

question 81

Multiple Choice

A blue line in the spectrum of the hydrogen atom has a wavelength $\lambda$ = 486 nm.In the hydrogen-atom spectrum emitted by a distant galaxy,this line is observed on Earth at $\lambda$ = 550 nm.With what speed is this galaxy receding from us? (The speed of light is 3.0 $\times$ 10⁸ m/s.)

• A)1.31 \(\times\) 10⁷ m/s
• B)1.13 \(\times\) 10⁸ m/s
• C)2.65 \(\times\) 10⁸ m/s
• D)3.49 \(\times\) 10⁷ m/s
• E)3.95 \(\times\) 10⁷ m/s

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Definitions:

Evolution

The method through which various types of life forms are believed to have evolved and branched out from ancestral species over Earth's history.

Animal Learning

The process by which animals acquire new behaviors or information through experience, which can include conditioning, imitation, and problem-solving.

Human Thought Processes

The mental activities involved in understanding, processing, and conveying information, including perception, memory, judgment, and reasoning.

Behaviorist

A psychologist or researcher who studies behavior through the analysis of observable actions, often emphasizing environmental influences over genetic factors.