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3 years ago

5

A herringbone or tire track pattern on a radiograph is a result of: _______.A. Insufficient vertical angulation B. Film bending

C. Excessive horizontal angulation D. Incorrect film placement

1 answer:

Schach [20]3 years ago

6 0

Answer: D Incorrect film placement

Explanation: The film packet was placed backward in the oral cavity.

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A lightning bolt may carry a current of 1.00 104 A for a short time. What is the resulting magnetic field 160 m from the bolt? S

ZanzabumX [31]

Answer:

Result magnetic field=

$1.25*10^-^5T$

Explanation:

We are given:

$I = 1.00*10^4A$

r = 160m

Let us say the lightning bolt is a long straight conductor.

Therefore we will use the formula:

B = Uo•I / 2πr

Substituting figures in the equation, we have:

$B = [(4π*10^-^7 T•m/A)(1.00*10^4)] / (2π * 160)$ ;

$= 1.25 * 10^-^5 T$ ;

$Therefore, the result magnetic field at 160m = 1.25 * 10^-^5$

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3 years ago

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Anna007 [38]

Answer:

Answer is D

Explanation:

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The energy from light is used by plants to oxidize which molecule?

Natasha2012 [34]

Photoautotrophs use light energy to convert carbon dioxide into organic compounds. This process is called photosynthesis. Chemoautotrophs extract energy from inorganic compounds by oxidizing them and use this chemical energy, rather than light energy, to convert carbon dioxide into organic compounds

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4 years ago

A race car makes two and a half laps around a circular track in 3.0 min. what is the car's average angular speed?

qaws [65]

<span>Angular speed = total degree / time As = 360*(2.5) / 3.0 min (60) As = 900 deg / 180 s As =5 Degree / second</span>

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3 years ago

A mole is defined as the number of atoms in an exact mass of which isotope?

alisha [4.7K]

Answer:

Isotope of carbon-12.

Explanation:

The MOLE is a unit of measurement of the amount of a pure substance which contains exactly the same number of chemical units which could be (Atoms, molecules etc.) posses atoms in exactly $12$ grams of isotope of carbon-12 (i.e., $6.022\times 10^{23}$ ).

So, The mole is the Notation used for an amount $6.022\times 10^{23}$ as same the 12 number is used for dozen for making count of Bananas and many more.

The $6.022\times 10^{23}$ is known as the fundamental constant names Avogadro's number ( $N_{A}$ ), It is in the honor of Italian scientist Amedeo Avogadro.

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3 years ago