If an electromagnetic wave has a frequency of 4.5 x 1018 Hz, what is its wavelength? Use î=”. The speed of light is 3 * 108 m/s.
A. 1.5 x 10-26
B. 6.7 x 1026 m
C. 1.5 x 10-10 m
D. 6.7 * 10-11 m

Wavelength of electromagnetic wave = 6.7 × 10⁻¹¹

Explanation:

Given:

Frequency of electromagnetic wave = 4.5 × 10¹⁸ Hz

Speed of light = 3 × 10⁸ m/s

Find:

Wavelength of electromagnetic wave

Computation:

⇒ Wavelength = Speed of light / Frequency

⇒ Wavelength of electromagnetic wave = 3 × 10⁸ / 4.5 × 10¹⁸

⇒ Wavelength of electromagnetic wave = 0.67 × 10⁻¹⁰

Wavelength of electromagnetic wave = 6.7 × 10⁻¹¹

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation: