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lianna [129]
3 years ago
6

Consider formula A to be v = StartFraction 2 pi r over T EndFraction and formula B to be v2 = GStartFraction 2 pi r over T EndFr

action. Write the letter of the appropriate formula to use in each scenario.
Chemistry
2 answers:
MissTica3 years ago
8 0

Answer:

The formulas that will be used are:

Situation one:

The moon will be experiencing gravitational force in the form of centripetal force, so we equate the two formulas.

Gravitational force = GMm /r²

Centripetal force = mv²/r

Equating,

GMm/r² = mv²/r

v² = GM/r

The first scenario will use the formula v² = GM/r

Situation 2:

The second situation will use the simple distance over time formula for velocity, where the distance will be the circumference and the time will be in seconds.

v = 2rπ/t

Explanation:

LUCKY_DIMON [66]3 years ago
3 0

Answer:

Distance from earth to the moon=B

An orbit km about earths surface=A

Explanation:

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Vitek1552 [10]

Answer: A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels. Trophic levels include different categories of organisms such as producers, consumers, and decomposers.

HERE IS THE ANSWER NOT THE LINK

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7 0
3 years ago
Read 2 more answers
Someone plz give me a hand​
Anika [276]

Answer:

If I am not mistaking and correct me if I am wrong on this but I think the answer is C

Explanation:

If this is correct please let me know and maybe a brainliest <3

8 0
3 years ago
What is the molar mass of Au(CN)2​
victus00 [196]

Answer:

249.01 g/mol

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table

Explanation:

<u>Step 1: Define</u>

Au(CN)₂

<u>Step 2: Identify</u>

Molar Mass of Au - 196.97 g/mol

Molar Mass of C - 12.01 g/mol

Molar Mass of N - 14.01 g/mol

<u>Step 3: Find MM</u>

Molar Mass of Au(CN)₂ - 196.97 + 2(12.01) + 2(14.01) = 249.01 g/mol

5 0
3 years ago
How many moles of gas sample are 5.0 L container at 373K and 203kPa
Rom4ik [11]
For the purpose we will here use t<span>he ideal gas law:

p</span>×V=n×R×<span>T

V= </span><span>5.0 L

T= </span><span>373K

p= </span><span>203kPa
</span><span>
R is </span> universal gas constant, and its value is 8.314 J/mol×<span>K
</span>
Now when we have all necessary date we can calculate the number of moles:

n=p×V/R×T

n= 203 x 5 / 8.314 x 373 = 0.33 mole
 
6 0
4 years ago
Glass of orange juice contain 0.90 dL of juice. How many milliliters of orange juice is that?
dlinn [17]
.90 dL is 90 mL because 1 dL is 100 mL
6 0
3 years ago
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