All categories

2 years ago

calculate the frequency in hertz of electromagnetic radiation that has a wavelength of 720.0 nm. (c = 3.00 x 10⁸ m/s)

1 answer:

8 0

Considering the definition of wavelenght, frecuency and propagation speed, the frequency of the electromagnetic radiation that has a wavelength of 720.0 nm is 4.167×10¹⁴ Hz.

In a periodic wave the wavelength (λ) is the physical distance between two points from which the wave repeats itself. It is expressed in units of length (m).

The frequency (f) is a measure of the number of cycles or repetitions of the wave per unit of time. Its unit is s⁻¹ or hertz (Hz).

The propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave's disturbance propagates along its displacement. Relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f×λ

In this case, you know:

v=c= 3×10⁸ m/s
f= ?
λ= 720 nm= 720×10⁻⁹ m

Replacing in the definition of propagation speed:

3×10⁸ m/s= f × 720×10⁻⁹ m

Solving:

3×10⁸ m/s÷ 720×10⁻⁹ m= f

Finally, the frequency of the electromagnetic radiation that has a wavelength of 720.0 nm is 4.167×10¹⁴ Hz.

Learn more:

You might be interested in

A = 27 + 0.3 C

vlabodo [156]

Answer:

The amount of potassium chloride that can dissolve in water increases by 0.3 grams for every 1 degree Celsius increase in temperature.

Explanation:

Given

$A = 27 + 0.3C$

Required

Interpret 0.3

We make use of the following illustration to answer this question.

Let C = 1

$A = 27 + 0.3*1 = 27 + 0.3 = 27.3$

Let C =2

$A = 27 + 0.3*2 = 27 + 0.6 = 27.6$

Let C = 3

$A = 27 + 0.3*3 = 27 + 0.9 = 27.9$

Notice that when the values of C increases by 1(i.e. from 1 to 2 and 2 to 3), the values of A increases by 0.3

i.e.

$27.9 - 27.6 = 27.6 - 27.3 = 0.3$

Hence, option D is true

7 0

3 years ago

Select the correct answer. it was not the first time for me to experience the river's charm. this time i saw the tupelo, cypress

Mademuasel [1]

Answer:

This time I saw the tupelo, cypress, and yaupon trees through the eyes of a man who has lived his entire life along the river.

Explanation:

7 0

2 years ago

What are symptoms of the corona virus

Goshia [24]

Answer:

People may experience:

cough

fever

tiredness

difficulty breathing (severe cases)

Explanation:

5 0

3 years ago

Read 2 more answers

To provide a smooth transition at the beginning of the paragraph, what is the most effective sentence to add? For example, it’s

Brilliant_brown [7]

Answer:

Explanation:

Just make a sizziling sound

8 0

2 years ago

Read 2 more answers

To extinguish a fire with a portable extinguisher, a person must:

nevsk [136]

Answer:

have immediate access to the extinguisher, know how to actuate the unit, and know how to apply the agent effectively. Attempting to extinguish even a small fire carries some risk. Hopefully this is what you were looking for.

6 0

2 years ago

Read 2 more answers