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lisov135 [29]
3 years ago
10

Which sound frequency with a human ear be able to detect? Select ALL correct answers.

Chemistry
2 answers:
Allisa [31]3 years ago
5 0

Answer:

100 HZ 1,000 HZ 10,000 HZ there you go :)

givi [52]3 years ago
5 0

Answer:

100 hertz, 1,000 hertz, and 10,000 hertz

Explanation:

I took the k12 test :)

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3. A mechanical pencil has a mass of 47.4 grams. The volume of the pencil is 15.8 cubic centimeters. What is the density of the
Morgarella [4.7K]

Answer:

<h3>The answer is 3 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{47.4}{15.8}  \\

We have the final answer as

<h3>3 g/cm³</h3>

Hope this helps you

5 0
3 years ago
What two states of matter are found during melting
schepotkina [342]

Answer:

The six changes are: Freezing: the substance changes from a liquid to a solid. Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid.

5 0
4 years ago
A sample of rock is found to contain 100 grams of a parent isotope. How many grams of the parent isotope will remain after one h
Inessa05 [86]
50

One half-life would be
100^1/2, which would make it 50.
4 0
3 years ago
1. For one atom of lithium -6 I will need_____ atom of lithium -7 for an average atomic mass of 6.944? 2. For one atom of lithiu
Hoochie [10]

Answer:

For one atom of lithium -6 I will need_16.85____ atom of lithium -7 for an average atomic mass of 6.944 .

Explanation:

1 ) Let required atom be m .

\frac{6\times 1 + 7\times m}{1 + m} = 6.944

6 + 7m = 6.944 + 6.944m

7 m - 6.944 m = .944

.056 m = .944

m = 16.85

6 0
4 years ago
Plants and animals both use the process of _____ to release stored energy.
liraira [26]
They use the process of respiration
5 0
3 years ago
Read 2 more answers
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