A Radar Unit Operates at a Wavelength of 4 $3.0 \times 10 ^ { 8 }$

question 22

Multiple Choice

A radar unit operates at a wavelength of 4.2 cm. Radar waves travel at the speed of light, which is $3.0 \times 10 ^ { 8 }$ . What is the frequency of the radar waves?

• A) 7.1 \(\times 10 ^ { 6 }\) Hz
• B) 7.1 \(\times 10 ^ { 9 }\) Hz
• C) 6.7 \(\times 10 ^ { 9 }\) MHz
• D) 7.1 \(\times 10 ^ { 9 }\) MHz
• E) 6.7 \(\times 10 ^ { 9 }\) Hz

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Definitions:

FICA Taxes

Taxes imposed by the Federal Insurance Contributions Act, funding Social Security and Medicare programs, withheld from employees’ pay and matched by employers.

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Taxes collected from employees and employers to fund the Medicare program, which provides healthcare benefits to retirees.

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A type of accounting record that shows the obligations or debts a company owes to others.