Physics, 28.09.2019 16:30 ahmadfarriz5948

The following sound waves have what velocity? (a) f = 36.3 hz, λ = 11.0 m m/s (b) f = 363.0 hz, λ = 4.80 m m/s (c) f = 3,630.0 hz, λ = 11.0 cm m/s (d) f = 36,300.0 hz, λ = 4.80 cm m/s

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Answer from: mariah10455

(a) v = 399.3 m/s, (b) v = 1742.4 m/s, (c) v = 399.3 m/s, (d) v = 1742.4 m/s

Explanation:

The velocity of a wave can be defined as:

$v = \lambda f$ (1)

Where $\lambda$ and f are the wavelength and frequency of the sound wave.

The values for each case will be replaced in equation (1).

(a) f = 36.3 Hz, λ = 11.0 m

v = (11.0 m)(36.3 Hz)

But 1 Hz = s⁻¹, therefore:

$v = (11.0 m)(36.3 s^{-1})$

$v = 399.3 m.s^{-1}$

v = 399.3 m/s

So the sound wave has a velocity of 399.3 m/s.

(b) f = 363.0 Hz, λ = 4.80 m

v = (4.80 m)(363.0 Hz)

$v = (4.80 m)(363.0 s^{-1})$

$v = 1742.4 m.s^{-1}$

v = 1742.4 m/s

So the sound wave has a velocity of 1742.4 m/s.

Before using equation (1) it is necessary to express $\lambda$ in meters.

$11.0 cm . \frac{1 m}{100 cm}$ ⇒ 0.11 m

v = (0.11 m)(3630.0 Hz)

$v = (0.11 m)(3630.0 s^{-1})$

$v = 399.3 m.s^{-1}$

v = 399.3 m/s

So the sound wave has a velocity of 399.3 m/s.

(d) f = 36,300.0 Hz, λ = 4.80 cm

$4.80 cm . \frac{1 m}{100 cm}$ ⇒ 0.048 m

v = (0.048 m)(36300.0 Hz)

$v = (0.048 m)(36300.0 s^{-1})$

$v = 1742.4 m.s^{-1}$

v = 1742.4 m/s

So the sound wave has a velocity of 1742.4 m/s.

Answer from: Quest

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation:

Answer from: Quest

Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is a colourless liquid organic compound with the chemical formula ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called glacial acetic acid. vinegar is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. it is classified as a weak acid since it only partially dissociates in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7 3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366 chemblchembl539 chemspider171 drugbankdb03166 echa infocard100.000.528ec number200-580-7e numbere260 (preservatives)gmelin reference1380iuphar/bps1058keggd00010 meshacetic+acidpubchem cid176rtecs numberaf1225000uniiq40q9n063p un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4) key: qtbsbxvteameqo-uhfffaoysa-n smilescc(o)=o

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The following sound waves have what velocity? (a) f = 36.3 hz, λ = 11.0 m m/s (b) f = 363.0 hz, λ =...