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Eduardwww [97]
3 years ago
10

If a wave is traveling at 200 m/s and its wavelength is 0.5 meters, what is the frequency of the

Physics
1 answer:
anyanavicka [17]3 years ago
7 0

The frequency of the  wave = 400/s

<h3>Further explanation</h3>

Given

v=200 m/s

λ=0.5 m

Required

The frequency of the  wave

Solution

Frequency (f): number of waves in one second

The frequency is inversely proportional to the wavelength

\tt f=\dfrac{v}{\lambda}\\\\f=\dfrac{200~m/s}{0.5~m}\\\\f=400/s

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(20) A rocket is launched vertically. At time t = 0 seconds, the rocket’s engine shuts down. At the time, the rocket has reached
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Answer:

Explanation:

Given that,

h(t) = -9.8t² / 2 + 125t + 500

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We want to find the maximum height reached by rocket

Using mathematics maxima and minima

let find the turning point when dh/dt = 0

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t = 12.76s

Let find the turning point to know if this time t = 12.76 is maximum or minimum point

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Then, the maximum height reached is

h =  -9.8t² / 2 + 125t + 500

h =  -9.8(12.76)² / 2 + 125(12.76) + 500

h = -797.80 + 1595 + 500

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The maximum height reached is 1297.2 m

From the attachment, the maximum height is 1297.2m at t = 12.76sec.

Comment, the result are the same for both the analysis aspect and the graphical aspect.

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3 years ago
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