As Measured from Earth, the Spectrum of the Galaxy NGC

question 42

Multiple Choice

As measured from Earth, the spectrum of the galaxy NGC 7512 reveals a receding velocity of about 7,000 km/s.If an observer in that galaxy takes a spectrum of the Milky Way they would
Measure ________.

• A) the same 7,000 km/s receding speed
• B) only 1,000 km/s, because for that observer the Hubble expansion is a lot slower
• C) something that we cannot possibly know, because the known laws of physics apply only within the Milky Way
• D) 23,000 km/s, because the speed of light has a different value for that observer
• E) no relative motion, because we are in fact measuring Earth's motion about the Sun.

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Definitions:

Gigabytes

A unit of digital information storage equal to 1,024 megabytes, often used to measure the capacity of memory or storage devices.

Cache Memory Levels

Refers to a hierarchy of cache storage that improves data access time by storing frequently used data in quick to access memory layers.

Proximity

The state or condition of being close or near; in technology, it often relates to the detection of and response to nearby objects or signals.

Machine Cycle

The series of steps a central processing unit goes through when it performs a program instruction.