A Block Slides Across a Rough Horizontal Table Top

question 55

Multiple Choice

A block slides across a rough horizontal table top.The work done by friction changes:

• A)only the kinetic energy
• B)only the potential energy
• C)only the thermal energy
• D)only the kinetic and potential energies
• E)only the kinetic and thermal energies

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Definitions:

Evolution

The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Allele

A variant form of a gene at a particular location on a chromosome that controls a specific trait.

Genotype

The genetic makeup of an organism, determining inherited characteristics.

Phenotype

The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.