An Airplane Engine Starts from Rest; and 2 Seconds Later

question 5

Multiple Choice

An airplane engine starts from rest; and 2 seconds later, it is rotating with an angular speed of 420 rev/min. If the angular acceleration is constant, how many revolutions does the propeller undergo during this time?

• A)7
• B)14
• C)21
• D)49
• E)150

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Definitions:

Best Food Choice

The most nutritious and healthful option selected from available foods, considering factors like vitamins, minerals, and overall dietary needs.

Number of Mitochondria

The quantity of mitochondria, which are organelles within cells that produce energy, found within a cell.

Aerobic Energy System

A method of energy production in the body that uses oxygen to break down food substances to produce ATP, the energy currency of the cell.

Oxygen Availability

The measure of oxygen that is accessible for cellular processes, vital for aerobic metabolism and energy production.