During the 1990's,hundreds of Trees Were Killed at Mammoth Mountain,California,by

question 10

Multiple Choice

During the 1990's,hundreds of trees were killed at Mammoth Mountain,California,by the diffuse emission of _________ gas.

• A)O₂
• B)SiO₂
• C)CO
• D)CO₂
• E)H₂S

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Definitions:

Mechanical Advantage

The factor by which a mechanism multiplies the force put into it, enabling the lifting or moving of heavier loads with less effort.

Pitch Diameters

The effective diameter of a screw thread, halfway between the crests and roots, used in measuring and specifying thread sizes.

Diametral Pitches

Diametral pitches refer to the number of teeth per inch of the diameter of a gear, which determines the size of the teeth and the pitch of the gear.

Ratchet Wheel

A wheel or gear with teeth cut in a way that allows motion in one direction only, often used in mechanisms requiring incremental movement.