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olchik [2.2K]
1 year ago
9

If an emergency vehicle passes you in traffic, just as it passes you the pitch of

Chemistry
1 answer:
Keith_Richards [23]1 year ago
3 0

If an emergency vehicle passes you in traffic, just as it passes you the pitch of the siren changes as it approaches, the siren’s pitch sounds higher than when it is moving away from you.the frequency increases as the siren is moving toward you, and decreases as it is moving away, is correct

This change is a common physical demonstration of the Doppler effect.

<h3>What is Doppler effect ?</h3>

This effect refers to the  increase in the frequency of sound, as the source and observer move toward (or away from) each other.

The effect causes the sudden change in pitch noticeable in a passing siren.

Hence Option (B) i.e, the frequency increases as the siren is moving toward you, and decreases as it is moving away, is correct

Learn more about Doppler' effect here ;

brainly.com/question/27507962

#SPJ1

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If C and Cl combined to make a compound, would it be covalent or ionic?
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Answer:

it would be a covalent bond

Explanation:

carbon has 4 valence electrons, while chlorine has 7.

6 0
2 years ago
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The following unbalanced equation illustrates the overall reaction by which the body utilizes glucose to produce energy: C6H12O6
s344n2d4d5 [400]

Answer:

the conversion factor is f= 6  mol of glucose/ mol of CO2

Explanation:

First we need to balance the equation:

C6H12O6(s) + O2(g) → CO2(g) + H2O(l) (unbalanced)

C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(l) (balanced)

the conversion factor that allows to calculate the number of moles of CO2 based on moles of glucose is:

f = stoichiometric coefficient of CO2 in balanced reaction / stoichiometric coefficient of glucose in balanced reaction

f = 6 moles of CO2 / 1 mol of glucose = 6  mol of glucose/ mol of CO2

f = 6 mol of CO2/ mol of glucose

for example, for 2 moles of glucose the number of moles of CO2 produced are

n CO2 = f * n gluc = 6 moles of CO2/mol of glucose * 2 moles of glucose= 12 moles of CO2

3 0
3 years ago
Observe as equações e de acordo com Brönsted-Lowry, os compostos destacados são, respectivamente
Alex777 [14]

answer

j'ai besoin d'aide

=]

<3

7 0
2 years ago
Which groups of the periodic table want to gain electrons? What kind(s) of elements are these groups
lukranit [14]

Answer:

Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions. Metals that are located in column 1A of the periodic table form ions by losing one electron.

Explanation:

6 0
3 years ago
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