The Collision of the Deep Impact Probe with the Nucleus

question 74

Multiple Choice

The collision of the Deep Impact probe with the nucleus of Comet Tempel 1 in 2005 revealed the nucleus as a "rubble pile," held together by:

• A) cohesive forces much stronger than those holding rocks together on the EarthEarth.
• B) frozen ices.
• C) gravitation.
• D) a fusion crust.

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Definitions:

Bond

A promissory note issued by a business or a governmental unit.

Interest Rate

The proportion of a loan that is charged as interest to the borrower, typically expressed as an annual percentage of the loan amount.

Offer Price

The price at which a seller is willing to sell a security or commodity.

Government Bonds

Are debt securities issued by a government to support its spending, typically considered a low-risk investment.