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Alekssandra [29.7K]
3 years ago
9

According to the periodic table, the average atomic mass of helium is

Physics
1 answer:
vfiekz [6]3 years ago
8 0

Helium has an atomic mass of 4.00 atomic mass units.

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A sprinter accelerates from rest to 10.0 m/s in 1.35 s l. What is her acceleration?
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Explanation:

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All electromagnetic waves
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Electromagnetic Waves:

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What would happen if the pilot did not keep the airplane "trimmed"
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Answer:

In explanation

Explanation:

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3 years ago
A body travels the first half of the total distance with velocity v and second half with v2 calculate avg velocity
LuckyWell [14K]

Answer:

v = 2 v₁ v₂ / (v₁ + v₂)

Explanation:

The body travels the first half of the distance with velocity v₁.  The time it takes is:

t₁ = (d/2) / v₁

t₁ = d / (2v₁)

Similarly, the body travels the second half with velocity v₂, so the time is:

t₂ = (d/2) / v₂

t₂ = d / (2v₂)

The average velocity is the total displacement over total time:

v = d / t

v = d / (t₁ + t₂)

v = d / (d / (2v₁) + d / (2v₂))

v = d / (d/2 (1/v₁ + 1/v₂))

v = 2 / (1/v₁ + 1/v₂)

v = 2 / ((v₁ + v₂) / (v₁ v₂))

v = 2 v₁ v₂ / (v₁ + v₂)

8 0
3 years ago
A compound containing sodium and chlorine in a binary ionic compound would be named
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Answer:sodium chloride.

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