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Anastasy [175]
3 years ago
8

Through which media did sound waves travel the fastest and the slowest?

Physics
1 answer:
In-s [12.5K]3 years ago
7 0

Answer:

Sound waves travels fastest in solids.

Sound waves travels slowest in gases.

Explanation:

Sound waves travels fastest in solids.

Sound waves travels slowest in gases.

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A 128 gram Radium-226 sample with a half-life of 2.25 billion years is found. How many grams will remain after two half-lives?
Bess [88]

Answer:

Option B. 32 g

Explanation:

From the question given above, the following data were obtained:

Original amount (N₀) = 128 g

Half-life (t½) = 2.25 billion years

Number of half-lives (n) = 2

Amount remaining (N) =?

The amount of 128 gram of Radium-226 that will remain after 2 half-lives has elapsed can be obtained as followb

N = 1/2ⁿ × N₀

N = 1/2² × 128

N = 1/4 × 128

N = 0.25 × 128

N = 32 g

Therefore, 32g of the sample will remain.

8 0
2 years ago
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lyudmila [28]

Answer:

a) wet marble , dry marble, newspaper, and towel

5 0
2 years ago
If a point charge is located at the center of a cylinder and the electric flux leaving one end of the cylinder is 20% of the tot
zheka24 [161]

The portion of the flux leaves the curved surface of the cylinder is 60%.

<h3 /><h3>What are electrons?</h3>

The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.

If a point charge is located at the center of a cylinder and the electric flux leaving one end of the cylinder is 20% of the total flux leaving the cylinder.

If 20% of the flux leave from one end, then another 20% will leave from another end.

So, the net flux through curved surface is

100 -20 -20 = 60%

Thus, the total flux  leaves the curved surface of the cylinder is 60%

Learn more about electrons.

brainly.com/question/1255220

#SPJ1

5 0
1 year ago
Which factor below does NOT affect how fast a solute dissolves in a solvent?
vodomira [7]
There is no factor on your list of choices that has any effect.
7 0
2 years ago
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What is the formula for calculating the efficiency of a heat engine
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The answer is Eficiency=T<< Tox100
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3 years ago
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