How Many Joules of Energy Are Required to Accelerate A 1.0

question 69

Multiple Choice

How many joules of energy are required to accelerate a $1.0 - \mathrm { kg }$ rock from rest to a speed of $0.866 c$ ? ( $c = 3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ )

• A) \(9.0 \times 10 ^ { 16 } \mathrm {~J}\)
• B) \(3.0 \times 10 ^ { 3 } \mathrm {~J}\)
• C) \(3.3 \times 10 ^ { 16 } \mathrm {~J}\)
• D) \(1.8 \times 1017 \mathrm {~J}\)

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Definitions:

Alveoli

are the tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

Gas Exchange

The biological process by which gases (mainly oxygen and carbon dioxide) are transferred between the blood and the external environment during the act of breathing.

Vocal Folds

Muscular membranes in the larynx that produce sound when air is expelled through them, also known as vocal cords.

Glottis

Vocal apparatus; includes vocal folds and the cleft between them.