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aliina [53]
3 years ago
7

Which of the following are observations?

Chemistry
1 answer:
marishachu [46]3 years ago
4 0

I know that this was 6 days ago but you might have to include a picture or write a full sentence in order to get answers.

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A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centr
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<h3><u>Answer;</u></h3>

<em><u> = 48,828.125 mi/hr²</u></em>

<h3><u>Explanation and solution</u>;</h3>
  • <em><u>Centripetal acceleration is the rate of change of angular velocity. Centripetal acceleration occurs towards the center of the circular path along the radius of the circular path</u></em>.
  • Centripetal acceleration is given by; <em>V²/r ; </em>

<em>V = 125 mi/h and r = 0.320 miles </em>

  • <em>Thus; centripetal acceleration = 125²/0.320 </em>

                                                  =15625/0.320

                                                 <em><u> = 48,828.125 mi/hr²</u></em>

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As shown by the periodic table, why do the elements potassium and sodium have similar chemical properties?
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This is the answer

The elements potassium and sodium have similar chemical properties because they have the same number of valence electrons and form +1 ions.

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In gamma-ray astronomy, gamma-ray bursts are immensely energetic explosions that have been observed in distant galaxies. They are the brightest and most energetic electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several hours. b

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How does a battery become depleted or out of charge? * -the number of protons and electrons at both terminals are not equal -the
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the number of protons and neutrons at both terminals are equal

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When the number of positive charge and negative charge are both equally the terminal, it becomes neutral and out of charge, because first it undergo enough chemical reaction and there is no remaining tendency for positive and negative charges to get separated. When this tendency dies, the battery also will run out of charge.

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