Which of the Following Methods Used to Determine the Mass

question 96

Multiple Choice

Which of the following methods used to determine the mass of a cluster of galaxies does not depend on Newton's law of gravity?

• A)measuring the amount of distortion caused by a gravitational lens
• B)measuring the temperature of X- ray gas in the intracluster medium
• C)measuring the orbital velocities of galaxies in the cluster
• D)none of the above

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