In an Isolated System of Two Bodies That Exert Gravitational

question 25

Multiple Choice

In an isolated system of two bodies that exert gravitational forces on one another, the quantity (quantities) that remain(s) constant is(are)

• A) the total energy of the system.
• B) the total angular momentum of the system.
• C) the angular positions of the two bodies.
• D) all of the above.
• E) only (a) and (b) above.

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Definitions:

P-value

The likelihood of test results being as significantly extreme or more so than what was observed, on the pretext that the null hypothesis is correct.

Two-sided Test

A statistical hypothesis test which determines if there is a significant difference in either direction between the groups or variables being studied.

One-sided Test

A hypothesis test in which the alternative hypothesis specifies a direction of the statistical significance, either greater than or less than a certain value.

P-value

The probability of encountering test data at least as extreme as what has been observed, with the assumption that the null hypothesis is valid.