A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a period of 
.What is the frequency of this oscillation?
Definitions:
Needs and Wants
The basic requirements for survival, such as food and shelter, compared to desires or wishes that do not necessarily contribute to one’s survival.
World Trade Organization
An international organization that regulates and facilitates international trade between nations.
Legally Binding
Refers to agreements or promises that are enforceable by law.
International Commerce
The exchange of goods, services, and capital across international borders or territories.
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