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Step2247 [10]
3 years ago
8

A long stairway with a metal handrail runs between the houses of Amelia and her friend Michelle. After getting their parents' pe

rmission, the two girls often play near the stairs. One day, Michelle stands at the top of the steps and taps the railing with a stone. Amelia stands at the bottom of the steps with her right ear pressed against the railing.
Amelia sees Michelle tap the railing, then she hears the sound with the ear that is pressed against the railing. Last, Amelia hears the sound with her other ear. Why did Amelia hear the sound with her right ear before her left ear?
A.
because light travels more quickly through air than sound does
B.
because the particles that carry sound energy travel more quickly through solids than through gases
C.
because the waves that carry sound energy travel more quickly through solids than through gases
D.
because her right ear was closer to Michelle, who was the source of the sound

PLEASSSSSE HEEELLPPP MMMMEEEE
Chemistry
2 answers:
Ahat [919]3 years ago
5 0

Answer:

D.

because her right ear was closer to Michelle, who was the source of the sound

jasenka [17]3 years ago
5 0

Answer:

because the waves that carry sound energy travel more quickly through solids than through gases

Explanation:

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Explanation:

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Here is a list of all the types of waves in order from shortest wavelength to longest wavelengths:

Gamma Rays (Shortest Wavelengths, High Energy), then X-Rays would be the second strongest, then Ultraviolet waves, then Visible Light, then Infrared waves, then Microwaves, and lastly Radio Waves (Longest Wavelengths, Low Energy).

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Ron is writing an essay on the process of photosynthesis.On which of the points should he elaborate
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Sergeeva-Olga [200]
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Therefore distance it takes to travel within 182 seconds - </span><span>186,282 miles/second x 182 seconds 
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4. Balance the following chemical equation. Say what the coefficients "a"
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Answer:

a = 4

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Explanation:

<u>SOLUTION :-</u>

Balance it by using 'hit & trial' method , and you'll get the answer :-

2Fe₂O + 3C → <u>4</u>Fe + <u>3</u>CO₂

⇒ a = 4 ; b = 3

<u></u>

<u>VERIFICATION :-</u>

<em>In reactant side of equation :-</em>

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  • Number of atoms in O = 2×3 = 6
  • Number of atoms in C = 3×1 = 3

<em>In product side of equation :-</em>

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Number of atoms of each element is equal in both reactant & product side of equation. Hence , the equation is balanced.

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