2 years ago

Guys PLZ I NEED HELP

Physics

2 answers:

BigorU [14]2 years ago

6 0

Answer:

its b sooo

Explanation:

klemol [59]2 years ago

4 0

Answer:

The answer is either D. (Hydrolysis) or C. (Abrasion)

Explanation:

I have taken the CST test for this.

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Answer:

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Explanation:

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2 years ago

A car is traveling south is 200 kilometers from it’s starting point after 2 hours. What is the average velocity of the car

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Answer:

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Explanation:

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2 years ago

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

uranmaximum [27]

Answer:

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

Explanation:

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

$f=\frac{v}{\lambda}$

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

The wavelength is 10 meters and the velocity is 200 meters per second.

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 20 Hertz

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2 years ago