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3 years ago

Which describes a scenario in which the Doppler effect is occurring?

Chemistry

2 answers:

s2008m [1.1K]3 years ago

8 0

The correct answer is option B, that is, the pitch changes from low to high.

The Doppler shift or the Doppler Effect refers to the variation in the wavelength or frequency of a wave in association with an observer who is traveling comparative to the source of the wave. A prime illustration of Doppler shift is the modification of the pitch heard when a vehicle sounding a horn comes towards and move away from an observer.

In comparison to the frequency emitted, the obtained frequency is greater at the time of approach, similar at the instant of passing by, and lower at the time of recession.

sasho [114]3 years ago

5 0

The pitch changes from high to low. :)hope this helps stinkers!

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Describe how you use conduction to make your s'mores

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Answer:

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4 years ago

What are all the possible masses of cl2 molecules that are made when two chlorine atoms bond together?

Pavel [41]

The masses of the 2 most common isotopes of Cl are 35 and 37. Therefore we can formulate 3 possible masses of Cl2:

35 + 35 = 70
35 + 37 = 72
37 + 37 = 74

However, Cl 35 is the most common isotope of chlorine of the two therefore it is the most probable that two Cl 35 atoms will combine, so 70 is the most common among all.

6 0

3 years ago

Read 2 more answers

What volume of 0.200 M ethanol solution contains each of the following amounts?

Papessa [141]

Answer:

A. 2.3 L

B. 6.10 L

C. 0.060 L

Explanation:

The question asks the volume of a 0.200 M solution of ethanol that contains certain number of moles of ethanol.

The M in the 0.200 M stands for Molarity. This is a unit of concentration that can be expressed as:

Molarity = moles of solute / Liters of solution

In this case:

0.200 M = moles of ethanol / Liters of solution

So from the formula we can get that we can calculate the volume of the solution, as Liters of solution, given the moles in each case as:

Liters of solution = moles of ethanol / 0.200 moles/L

_______________________________________________

A. 0.45 mol ethanol

Liters of solution = 0.45 moles / 0.200 moles/L = 2.25 L = 2.3 L

B. 1.22 mol ethanol

Liters of solution = 1.22 moles / 0.200 moles/L = 6.10 L

C. 1.2 x 10⁻² mol ethanol

Liters of solution = 1.2 x 10⁻² moles / 0.200 moles/L = 0.060 L

_______________________________________________

Note: Each answer is given with the correct number of significant figures which results from the least number of significant figures in the given used values in each calculation.

7 0

3 years ago

Which information about a chemical reaction is provided by a potential energy diagram?(1) the oxidation states of the reactants

BaLLatris [955]

D. The energy released or absorbed during the reaction

3 0

3 years ago

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Chromium forms a complex with diphenylcarbazide whose molar absorptivity is 4.17*10^4 at 540nm. Calculate the absorbance of a 7.

Solnce55 [7]

Answer:

0.32 liters/mole cm.

Explanation:

According to Beer Lambert's law;

A= εcl

ε = molar absorptivity

c= concentration

l= path length

A= 4.17*10^4 × 7.68*10^-6 × 1

A= 0.32 liters/mole cm.

4 0

3 years ago