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3 years ago

Both a siren passing by and radar exhibit the Doppler effect. What is the main

Chemistry

2 answers:

Gemiola [76]3 years ago

5 0

Answer:

D. Radar uses radio, and the siren uses sound waves.

Explanation:

The main difference between the siren passing by and the radar is that radar uses radio waves and siren uses sound waves.

Sound waves are mechanical waves which requires a material medium for their propagation.
In a vacuum, the sound waves cannot pass through freely.
Radar is an electromagnetic wave.
It is particular of radio waves origin.
Such waves do not require a material medium for their propagation and hence can be transmitted through a vacuum.

Likurg_2 [28]3 years ago

3 0

Answer: c is the correct answer

Explanation:

I’m smrt

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3 years ago

During a qualitative analysis, a student is looking for the presence of carbonate ions CO3(2-) in various solid samples. which o

Mama L [17]

The correct answer is (B) Adding a dilute solution of HCl

<u>EXPLANATION</u>

The presence of carbonate ions can be tested by adding a dilute acid to the solution. The acid displaces Carbon (IV) oxide from the solution. Using HCl, and a carbonate of metal X.

XCO₃₍s₎ + 2HCl₍aq₎⇒ XCl₂₍aq₎+ H₂O₍l₎ + CO₂₍g₎

The gas produced is tested using calcium hydroxide to confirm whether it is carbon (IV) oxide.

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3 years ago

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umka2103 [35]

Answer:

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Explanation:

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3 years ago

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Answer:

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Explanation:

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4 years ago

Why do we use balanced equations ?

polet [3.4K]

Answer:

Balanced equations are used to allow chemists to calculate how much product they will produce from their reactants. The co-efficients in balanced equations represent the number of moles reacting and being produced, it is rare that this exact ratio will be used in a reaction.

Explanation:

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3 years ago