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alexandr402 [8]
3 years ago
7

The quality of the sound heard on percussion of the chest; the intensification and prolongation of a sound by reflection or by v

ibration of a nearby object is known as:
a. pitch.
b. tone.
c. frequency.
d. resonance.
Medicine
2 answers:
vredina [299]3 years ago
7 0

Answer:

resonance

Explanation:

pitch is the quality of a sound governed by the rate of vibrations producing it the degree of highness or lowness of a tone.

the tone is how u sound( i dont know how to word it)

frequency is the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.

Naya [18.7K]3 years ago
4 0

Answer:

a

Explanation:

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You go to the doctor and he gives you 12 milligrams of radioactive dye. After 20 minutes, 7 milligrams of dye remain in your sys
gtnhenbr [62]

Answer:

<u>34.12 minutes </u>

Explanation:

You go to the doctor and he gives you 14 milligrams of radioactive dye.

After 24 minutes, 4.25 milligrams of dye remain in your system.

---

A(t) = ab^t

7 = 12b^20

b = (7/12)^(1/20) = 0.9488

----

Solve for "t" if:

2 = 12^t

[0.9488]^t = 1/6

---

Take the log to solve for "t":

t*ln[0.9488] = ln[1/6]

---

t = -1.7917 /-0.0525

--------------

t = 34.12 minutes (this is when he will have 2mg in his blood)

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