Magnetic resonance imaging, or mri (see section 21.7), and positron emission tomography, or pet scanning (see section 32.6), are two medical diagnostic techniques. both employ electromagnetic waves. for these waves, find the ratio of the mri wavelength (frequency = 6.38 × 107 hz) to the pet scanning wavelength (frequency = 1.23 × 1020 hz).

1.92 × 10¹²

Step-by-step explanation:

Given:

Frequency of the MRI, f₁  = 6.38 × 10⁷ Hz

thus,

the wavelength = C / f

where,

C is the speed of the light

therefore,

wavelength of the electromagnetic wave by MRI, λ₁ = C / f₁

or

λ₁ = C / 6.38 × 10⁷ Hz

now,

Frequency of the PET, f₂  = 1.23 × 10²⁰ Hz

Thus,

wavelength of the electromagnetic wave by PET, λ₂ = C / f₂

or

λ₂ = C / 1.23 × 10²⁰ Hz

therefore,

the ratio of the MRI wavelength to the PET scanning wavelength

= λ₁ / λ₂

or

=

or

=

or

Ratio of the MRI wavelength to the PET scanning wavelength = 1.92 × 10¹²

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

brandon has 4344 video games.  

step-by-step explanation

7373 - 2929 = 4344

pls let me know if it was correct