Three Books (X, Y, and Z) Rest on a Table

question 59

Multiple Choice

Three books (X, Y, and Z) rest on a table. The weight of each book is indicated. The force of book Z on book Y is:

• A) 0 N
• B) 5 N
• C) 9 N
• D) 14 N
• E) 19 N

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Definitions:

Global Warming

The long-term increase in Earth's average surface temperature due to human activities, particularly the emission of greenhouse gases.

Environmental Movement

A diverse scientific, social, and political movement for addressing environmental issues through advocacy, education, and policy changes.

Greenhouse Effect

The trapping of the sun's warmth in the planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.