In the context of this chapter, what is an orphan planet?

A) a planet-size object that does not orbit a star
B) a planet orbiting a star that is not a member of a galaxy
C) a planet that has microbial life but no larger organisms
D) a planet with no moons, such as Mercury or Venus


A) a planet-size object that does not orbit a star

Physics & Space Science

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Which radiation has no association with electric charge?

A) alpha B) beta C) gamma D) all of the above E) none of the above

Physics & Space Science

The prediction from special relativity that the length of a moving object will be shortened in the direction of motion is called __________

Fill in the blank(s) with correct word

Physics & Space Science

How can a neutron probe split a nucleus?

a. By striking it at just the right point so it breaks in half. b. By disturbing the strong force so that nucleons escape. c. By being strongly electrically repelled by the protons. d. By being captured and thus changing a stable isotope into an unstable one. e. By changing the charge on the nucleus and thus causing beta decay.

Physics & Space Science

Order the following situations according to the magnitude of the magnetic field at the point P. Order from highest to lowest

1.ABCD 2.ADBC 3.BDAC 4.CADB 5.DABC 6.None of the above

Physics & Space Science