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Marrrta [24]
2 years ago
12

The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y. y = startfraction 3 x 1

0 superscript 8 baseline over x endfraction what is the wavelength for radio waves with frequency 3 × 109?
Mathematics
1 answer:
melomori [17]2 years ago
7 0

The wavelength for radio waves with frequency 3 × 10⁹ Hz is 0.1 m.

<h3>What's the relation between frequency and wavelength of electromagnetic waves?</h3>
  • For electromagnetic waves travelling in vaccum, the product of frequency and wavelength is the speed of light in vaccum.
  • Mathematically, frequency × wavelength = 3×10⁸ m/s (which is speed of light)
  • So, wavelength= 3×10⁸/ frequency

<h3>What's the wavelength of radio wave with frequency 3×10⁹ Hz ?</h3>

Wavelength of the radio wave= 3×10⁸/3×10⁹ = 0.1 m

Thus, we can conclude that the wavelength of the radio wave with frequency of 3 × 10⁹ Hz is 0.1 m.

Learn more about the wavelength of electromagnetic wave here:

brainly.com/question/27817563

#SPJ1

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In a parallel circuit, ET = 120 V, R = 30 Ω, and XL = 40 Ω. What is IR?
soldi70 [24.7K]

Answer:


Step-by-step explanation:

Given

ET = 120 V

, R = 30 Ω,

XL = 40 Ω.

To find = IR=?

as in circuit inductor and resistor are parallel so ET =EL = ER = 120V

IR = current through resistor = IR = ER/ R

                                                      = 120V /30Ω.

                                                       = 4 ampere.



6 0
3 years ago
What are the zeros of f(x) = x(x − 9)?
ollegr [7]

Answer:

x = 0 , x = 9

Step-by-step explanation:

to find the zeros let f(x) = 0 , that is

x(x - 9) = 0

equate each factor to zero and solve for x

x = 0

x - 9 = 0 ⇒ x = 9

6 0
2 years ago
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What is 372 rounded to the nearest 100
Xelga [282]
372

The number 3 is in the hundreds place.

Look to the number immediately to the right.

We know that 7 is bigger than 3.

So, we add 1 to 3 and the rest become 0.

Answer: 400
7 0
3 years ago
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What is the volume of a cylinder, in cubic centimeters, with a height of 8 centimeters
Arisa [49]

Answer:

1608.5 cm³

Step-by-step explanation:

Use the cylinder volume formula, V = \pir²h

If the diameter is 16 cm, then the radius is 8 cm.

Plug in the radius and height into the formula, and solve:

V = \pir²h

V = \pi(8)²(8)

V = \pi(64)(8)

V = 1608.5

So, to the nearest tenth, the volume of the cylinder is 1608.5 cm³

6 0
3 years ago
Pls help i’ll mark you brainliest
k0ka [10]

Answer:

90°

Step-by-step explanation:

please mark brainliest :))

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3 years ago
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