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Darina [25.2K]
3 years ago
11

30 PTS

Physics
1 answer:
tigry1 [53]3 years ago
7 0
Spreads out in the medium, first choice
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Answer:

I don't even know can anybody help this person

6 0
3 years ago
If atmospheric pressure suddenly changes from 1.00 atm to 0.896 atm at 298 k, how much oxygen will be released from 3.30 l of wa
xxMikexx [17]
At  a temperature of 298 K, the Henry's law constant is 0.00130 M/atm for oxygen. The solubility of oxygen in water 1.00 atm would be calculated as follows:

<span>S = (H) (Pgas) = 0.00130 M / atm x 0.21 atm = 0.000273 M
</span>
At 0.890 atm,
<span>S = (H)(Pgas) = 0.00130 M / atm x 0.1869 atm = 0.00024297 M</span>
<span>
If atmospheric pressure would suddenly change from 1.00 atm to 0.890 atm at the same temperature, the amount of oxygen that will be released from 3.30 L of water in an unsealed container would be as follows</span>
<span>
3.30 L x (0.000273 mol / L) = 0.0012012 mol</span>

3.30 L x (0.00024297 mol / L) = 0.001069068 mol

0.0012012 mol - 0.001069068 mol = 0.000132 mol
6 0
4 years ago
Boy A and Boy B are pulling on a rope. If the rope is not moving toward either boy, identify two balanced forces involving the r
natima [27]

Answer:

Hey

The rope isn't moving because each boy is pulling with the same force on opposite ends. That being said the bot pulling force is balanced.

Inside the rope are molecules connecting the whole thing together. The force they exert on each other must be equal because they aren't moving but are still exerting forces

7 0
3 years ago
A mass of 0.250 kg is attached to a spring and undergoes simple harmonic oscillations with a period of 0.640 s. What is the forc
Paha777 [63]

The force constant of the spring is approximately 24.038 newtons per meter.

As we are talking about Simple Harmonic Motion. In this exercise we need to determine the Spring Constant (k), in newtons per meter, from the equation of the Period (T), in seconds, which is described below:

T = 2\pi\cdot \sqrt{\frac{m}{k} } (1)

Where m is the mass of the moving element, in kilograms.

If we know that T = 0.640\,s and m = 0.250\,kg, then the spring constant of the spring is:

0.640 = 2\pi\cdot \sqrt{\frac{0.250}{k} }

\sqrt{\frac{0.250}{k} } \approx 0.102

\frac{0.250}{k} \approx 0.0104

k \approx 24.038\,\frac{N}{m}

The force constant of the spring is approximately 24.038 newtons per meter.

Please see this question related to Simple Harmonic Motion for further details: brainly.com/question/17315536

6 0
3 years ago
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Name two types of evidence used to support the theory of evolution. Explain how scientists use each type of evidence to provide
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Well, one of the theories was that Charles darwin proved that theory evolution is real so that one theory. 
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