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Rasek [7]
3 years ago
14

n the lab, you performed a trial where the fan was turned off partway through the run. What did the graph for this trial look li

ke? How does the slope of the graph change, and why?
Physics
1 answer:
dolphi86 [110]3 years ago
3 0

Answer:

the graph would lower down if we are talking about speed because the velocity stops going and theres no more kinetic energy to cause any speed

Explanation:

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The fourth harmonic on a string fixed at both ends shows
Charra [1.4K]

Answer:

I believe the answer is B) Two wavelengths

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2 years ago
What is the concentration of H+ ions at a pH = 7? mol/L What is the concentration of OH– ions at a pH = 7? mol/L What is the rat
AnnZ [28]
<h3><u>Answer;</u></h3>

= 0.0000001 mol/L  

= 0.0000001 mol/L  

= 1:1

<h3><u>Explanation;</u></h3>

What is the concentration of H+ ions at a pH = 7?

The formula for ph is given by:

pH=−log10[H+]

In calculating for the concentration of hydrogen ion, the formula is given by:

[H+]=(10)^(-pH)

Therefore; at pH = 7

[H+]=(10)^(-7)

<u>= 0.0000001 mol/L </u> 

What is the concentration of OH– ions at a pH = 7?

pH+pOH=14

7+pOH=14

pOH= 7

[OH-]=(10)^(-pOH)

[OH-]=(10)^(-7)

<u>= 0.0000001 mol/L  </u>

What is the ratio of H+ ions to OH– ions at a pH = 7?  

1:1

8 0
3 years ago
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Chemical energy is the stored form of chemical bonds containing combinations of which elements? Select THREE (3) elements. *
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Carbon hydrogen oxygen
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3 years ago
A 1.95 kg box sits on an incline of 24 ° with the horizontal. If the box accelerates down the incline at 0.245 m/s 2 , what is t
koban [17]

Answer:

Explanation:

                            F = ma

mgsinθ - μmgcosθ = ma

      gsinθ - μgcosθ = a

                   μgcosθ = gsinθ - a

                              μ = (gsinθ - a) / gcosθ

                              μ = (9.81sin24 - 0.245) / 9.81cos24

                              μ = 0.4178906...

                              μ = 0.418

6 0
2 years ago
An apple falls from a tree. Its position, at 0.3 second intervals, is shown below. At 0.0 seconds, the apple has not yet fallen,
Dmitry [639]
When ball is about to hit the ground, almost all its potential energy has already converted into kinetic energy. Thus at t=0.9 sec, it has least potential energy.
5 0
3 years ago
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