If a Quasar Has a Recessional Velocity of 2

question 44

Multiple Choice

If a quasar has a recessional velocity of 2.7 10 5 km/sec and is determined to be 3600 Mpc, what is the Hubble constant based on this quasar alone? Hint: Note that the units of your result should be (km/sec) /Mpc to see what arithmetic process you need to do on a calculator.

• A) 50 km/sec/Mpc
• B) 9.7 10 8 (km/sec)Mpc
• C) 75 km/sec/Mpc
• D) 0.013 km/sec/Mpc
• E) 273,600 km/sec/Mpc

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Definitions:

Extrasensory Perception (ESP)

A supposed ability of the human mind to acquire information without the use of the known (sensory) channels of communication.

Photoreception

The biological process by which organisms detect and respond to light, primarily through specialized light-sensitive cells.

Precognition

The purported psychic ability to see events in the future before they happen, outside the boundaries of known physical mechanisms.

Sensatory Receptors

Specialized cells or nerve endings that respond to changes in the environment by generating electrical signals.