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Sindrei [870]
3 years ago
11

PLEASE HELP ME!!!!! I'LL MARK YOU BRAINLIEST IF YOU ANSWER THIS CORRECTLY

Physics
2 answers:
mrs_skeptik [129]3 years ago
4 0

Answer: A

Explanation: Kinetic energy is when something is in motion so it would just make sense

Pachacha [2.7K]3 years ago
3 0

Answer:  a

Explanation:

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What's the frequency of a wave with a wavelength of 10 and velocity of 200m/s?
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Answer:

\boxed {\boxed {\sf 20 \ Hz}}

Explanation:

The frequency of a wave can be found using the following formula.

f=\frac{v}{\lambda}

where <em>f</em> is the frequency, <em>v</em> is the velocity/wave speed, and λ is the wavelength.

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  • 1 m/s can also be written as 1 m*s^-1

Therefore:

v= 200 \ m*s^{-1} \\\lambda = 10 \ m

Substitute the values into the formula.

f=\frac{200 \ m*s^{-1}}{10 \ m}

Divide and note that the meters (m) will cancel each other out.

f=\frac{200 \ s^{-1}}{10 \ }

f=20 \ s^{-1}

  • 1 s^-1 is equal to Hertz
  • Therefore, our answer of 20 s^-1 is equal to 20 Hz

f= 20 \ Hz

The frequency of the wave is <u>20 Hertz</u>

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