The Intensity at a Distance of 6

question 98

Multiple Choice

The intensity at a distance of 6.0 m from a source that is radiating equally in all directions is 6.0 × 10^-10 W/m².What is the power emitted by the source?

• A)2.1 × 10^-8 W
• B)2.7 × 10^-7 W
• C)2.1 × 10^-6 W
• D)2.7 × 10^-5 W

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Definitions:

Silicates

Minerals that contain silicon-oxygen tetrahedra; the most common mineral group on Earth.

Silicates

Minerals that contain silicon and oxygen, often with one or more metals, forming the majority of the Earth's crust.

Element Si

Silicon, a chemical element with symbol Si, known for its semiconductor properties and abundant use in electronic devices.

Quartz

A hard, crystalline mineral composed of silicon dioxide, notable for its durability and its use in making jewelry and electronic equipment.