The proper abbreviation for ‘kilohertz' is __________
Fill in the blank(s) with correct word
kHz
Physics & Space Science
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The evolution of a "high mass star" is different from the evolution of smaller stars because these stars ____
a. do not generate strong stellar winds b. rotate faster c. have stronger magnetic fields d. can ignite carbon fusion e. are never in binary systems
Physics & Space Science
Easily identifiable navigational links are used to answer a website visitor's ______ question.
A. Who? B. What? C. Why? D. Where?
Physics & Space Science
An apple falls from a tree and hits the ground 5 meters below with a speed of about
A) 5 m/s. B) 10 m/s. C) 15 m/s. D) 20 m/s. E) not enough information
Physics & Space Science
What information does 21 cm radiation provide about the gas clouds?
A) their motion B) their distribution C) their density D) their temperature E) all of these
Physics & Space Science