If a Sound of Intensity I = 1

question 66

Multiple Choice

If a sound of intensity I = 1.0  10^-6 W/m² falls on a detector of area A = 7.0  10^-5 m² about the size of your eardrum) , how much power is received by the detector?

• A) 6.2  10^-14 W
• B) 1.0  10^-6 W
• C) 7.0  10^-11 W
• D) 1.4  10^-2 W
• E) 70 W

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Definitions:

Osteoblasts

Bone-forming cells that turn membrane into bone. They use excess blood calcium to build new bone.

Calcitonin

A hormone secreted by the thyroid gland that helps regulate calcium levels in the blood by inhibiting bone resorption.

Excess Blood

A condition where there is more blood in the body or a part of the body than what is considered normal or healthy.

Bone Tissue

A hard, dense connective tissue that forms the structural elements of the skeleton, providing support, protection, and aiding in movement.