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Klio2033 [76]
2 years ago
15

Help!

Physics
2 answers:
blagie [28]2 years ago
5 0

\qquad\qquad\huge\underline{{\sf Answer}}

As we know, period (t)of a wave and it's frequency (f) are Reciprocal of each other, so if one is know then we can just reverse the order to get the other one.

that is :

\qquad \sf  \dashrightarrow \:  frequency =  \dfrac{1}{period}

Now, let's move on to problems ~

# 11. f = 15 hertz, t = ?

\qquad \sf  \dashrightarrow \: t =  \dfrac{1}{15}  \:  \: sec

\qquad \sf  \dashrightarrow \: t \approx0.067 \:  \:  sec

#12. f = 292 hertz, t = ?

\qquad \sf  \dashrightarrow \: t =  \dfrac{1}{292}  \:  \: sec

\qquad \sf  \dashrightarrow \: t \approx0.0034 \:  \:  sec

#13. t = 12 seconds, f = ?

\qquad \sf  \dashrightarrow \: f=  \dfrac{1}{12}  \:  \: hertz

\qquad \sf  \dashrightarrow \: f \approx0.083 \:  \:  hertz

aniked [119]2 years ago
3 0
<h3>\huge\underline{\underline{\mathbb{A\:N\:S\:W\:E\:R}}}</h3>

We know that, frequency = reciprocal of the period of time an object swings or vibrates at. Therefore,

\tt\:FORMULA \downarrow\\\\\star\boxed{\mathfrak{Frequency = \frac{1}{period \: of \: time}}}

Now, let's solve the questions by using this formula.

\rule{150pt}{2pt}

11. Frequency = 15 Hz

Period = ?

\sf\:Frequency = \frac{1}{period}\\\sf\:15 = \frac{1}{period}\\\boxed{\bf\:period = \frac{1}{15} = 0.67 \: s}

\rule{150pt}{2pt}

12. Frequency = 292 Hz

Period = ?

\sf\:Frequency = \frac{1}{period}\\\sf\:292 = \frac{1}{period}\\\boxed{\bf\:period = \frac{1}{292} = 0.0034 \: s}

\rule{150pt}{2pt}

13. Period = 12 s

Frequency = ?

\sf\:Frequency = \frac{1}{period}\\\sf\:Frequency = \frac{1}{12}\\\boxed{\bf\:Frequency = 0.083 \: Hz}

\rule{150pt}{2pt}

<h3>Note:</h3>

The SI units of,

  • Frequency = Hertz (Hz)
  • Period of time = Second (s / sec)

\rule{150pt}{2pt}

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<u>Answer:</u>

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<u>Explanation:</u>

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Learn more:

Work done brainly.com/question/9100769

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