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Len [333]
2 years ago
15

A wave is produced from a vibrating string on a violin. Two observers are standing 20 m and 40 m away from the musician. The obs

erver that is further away states that the violin sounds quiet but the other observer disagrees. What best explains the different experiences of the two observers?
a) The energy of the sound wave decreased as it moved away from the source.

b) The energy of the sound wave increased, then decreased as it moved away from the source.
Physics
1 answer:
max2010maxim [7]2 years ago
3 0

Well the one that is closer can see and hear more

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The first outside orbit of Earth planet is <br>a Jupiter <br>b Mars <br>c Saturn <br>d uranus​
horsena [70]

Answer:

I believe it would be B, Mars.

Hope this helps!

3 0
3 years ago
Read 2 more answers
YALL PLEASE PLEASE HELP IF YOU KNOE THE ANSWER TO BOTH OF THEM IT WILL BE VERY NICE PLEASE HELP
Juliette [100K]

Answer:

2.5m/s²

Force  = mass x acceleration  

Explanation:

Given parameters

Mass  = 200kg

Force  = 500N

Unknown:

Acceleration  = ?

Solution:

According to the Newton's second law of motion "the constant force applied on a massive body causes it to accelerate".

 Mathematically;

    Force  = mass x acceleration  

Now insert the parameters and solve;

   Acceleration  = \frac{force}{mass}  

   Acceleration = \frac{500}{200}   = 2.5m/s²

8 0
2 years ago
What are the odds of nonsmokers developing cardiovascular disease when compared to smokers?
77julia77 [94]
The probability ("odds") is smaller for nonsmokers when compared
to smokers.

If we had as much hard, reliable, repeatable, scientific evidence linking
cardiovascular disease with visits to the Empire State Building as we have
linking it with smoking, the Empire State Building would have been torn down
50 years ago.
6 0
3 years ago
Read 2 more answers
Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abund
vova2212 [387]

Answer:

C. 28.09 amu

Explanation:

The natural occurring element exist in 3 isotopic forms: namely X-28 (27.977 amu, 92.23% abundance),  X-29 (28.976 amu, 4.67% abundance) and  X-30 (29.974 amu, 3.10% abundance).

The atomic weight of elements depends on the isotopic abundance. If you know the fractional abundance and the mass of the isotopes the atomic weight can be computed.

The atomic weight is computed as follows:

atomic weight = mass of X-28 × fractional abundance + mass of X-29 × fractional abundance + mass of  X-30 × fractional abundance

atomic weight = 27.977 × 0.9223 + 28.976 × 0.0467 + 29.974 ×  0.0310

atomic weight = 25.8031871 + 1.3531792 + 0.929194

atomic weight = 28.0855603 amu

To 2 decimal place atomic weight = 28.09 amu

6 0
3 years ago
When the pressure on a gas increases,what does the volume do?
kupik [55]

Answer:

As pressure goes up, volume goes down.

Explanation:

Pressure and volume of a gas are inversely proportional.  This means that as pressure goes up, volume goes down.  And as volume goes up, pressure goes down.

Cheers.

4 0
3 years ago
Read 2 more answers
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