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aivan3 [116]
4 years ago
8

Select a musical instrument. Research the instrument and explain how it works in terms of sound production and resonance. Descri

be how a musician can vary the pitch and loudness of the notes. Explain why different types of musical instruments sound different, even though they play the same notes.
Physics
2 answers:
iren [92.7K]4 years ago
7 0
1. I think a drum would be the easiest instrument to explain. You can vary the pitch and loudness by hitting it with different intensities or at different points or angles.

PS. I'm not talking about a drumset. I'm talking about an ordinary drum.

2. Different types of instruments sound different even though they play the same notes because they use different mechanisms for producing sound.

MrRa [10]4 years ago
3 0

Answer:

Explanation:

Xylophones is an instrument which has wooden bars attached to mallet.

When bars are hit, a sound is produced which resonate in the wooden boxes.

These wooden bars are of different sizes thus there pitch different from each other.

The longer the bars, more time the sound will be there hence lower will be the pitch.

As musical instruments are different in structure, they have different nature and produce different sounds.

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A 45-year-old man is meeting his doctor for his annual physical. He suffers from Type 2 diabetes and has a family history of cor
shutvik [7]

Answer:

The man is on the verge of having a heart attack or a stroke.

Explanation:

If he has a family history of coronary (heart) disease, it means it could normally affect. Normally here means without anything aggravating it. It's already in his lineage so he could have it.

Now, he's past middle age - he's 45. He's past the growing stages of life. His organs are fully developed herefore.

Now also, he suffers from Type 2 diabetes. Although this is sometimes milder than Type 1 diabetes, it increases the risk of having a heart disease or a stroke!

Soda, especially sweetened one, is not to be taken too often because it can cause Diabetes Mellitus. For a diabetes patient, this should be a "no-go-area". Taking this constantly (everyday at work) will now put this 45-year-old man in harm's way.

He is no more at risk of having complications but already on the path to a heart disease or a stroke.

4 0
3 years ago
What is imagery?
Angelina_Jolie [31]
Imagery is almost like a film being played in the readers mind when reading literature. So on that note, I think the last one, 'words that trigger the imagination to remember by appealing to the five senses', is the best choice.

I hope this helps!

8 0
4 years ago
Read 2 more answers
Buffy is rolling along in her 10.4 kg wagon at 3.4 m/s (in the positive direction) when she jumps off the back. She continues to
lubasha [3.4K]

Answer:

Buffy weigh's 28.39 kg

Explanation:

Given;

mass of Buffy and wagon, M = 10.4 kg

final velocity of Buffy - wagon system, v = 3.4 m/s

Buffy's velocity relative to the ground, u₁ = 1.7 m/s

Wagon's velocity relative to the ground, u₂ = 8.04 m/s

Buffy's velocity = 1.7 - 3.4 = - 1.7 m/s

Wagon's velocity = 8.04 - 3.4 = 4.64 m/s

Apply the principle of conservation of linear momentum;

1.7 x m = 4.64 x 10.4

where;

m is mass of wagon

1.7 m = 48.256

m = 48.256 / 1.7

m = 28.39 kg

Therefore, Buffy weigh's 28.39 kg

4 0
4 years ago
A pair of eyeglass frames are made of an epoxy plastic (coefficient of linear expansion = 122 ✕ 10-6 °C-1). At room temperature
il63 [147K]

Answer:

The new temperature is  T_1 =  60.78^oC

Explanation:

From the question we are told that

   The coefficient of linear expansion is  \sigma  =  122 *10^{-6} \ ^oC^{-1}

    The temperature is  T  =  20.0 ^oC

    The radius of the frames is r =  2.00 \  cm  = 0.02 \ m

    The new radius is  r_2 =  2.01 \ cm =  0.021 \ m

The change in radius is mathematically represented as

       \Delta r =  r_1 -r

substituting values

       \Delta r =  2.01 - 2.00

       \Delta r =  0.01 \ m

The increase in radius can also be mathematically represented as

     \Delta  r  =  r * \sigma (T_1 -T)

Where T_1 is the the new temperature , making it the subject we have

      T_1 =  \frac{\Delta  r}{r * \sigma  } + T

substituting value  

     T_1 =  \frac{0.01}{2.01 *122*10^{-6}  } + 20

    T_1 =  60.78^oC

5 0
4 years ago
A vertical spring has a spring constant of
VikaD [51]
Hookes law states F=kX where F is the force applied, k is the spring constant, and X is the extension of the spring from its resting point.

Substituting the values in, we get:

F=100*(0.65-0.5)=100*0.15=15N
8 0
3 years ago
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