Answer:
The speed of these waves is 222.22 m/s
Explanation:
A.
Since, we know that the speed of a wave is given by the formula:
v = fλ
where,
v = speed of wave
f = frequency of wave
λ = wavelength
Here,
λ = distance between consecutive wave crests
λ = 800 km = 8 x 10⁵ m
f = 1/Time Period = (1/1 hr)(1 hr/3600 s)
f = 2.77 x 10⁻⁴ s⁻¹
Therefore,
v = (2.77 x 10⁻⁴ s⁻¹)(8 x 10⁵ m)
<u>v = 222.22 m/s</u>
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The vector which shows the velocity of the yo-yo at this moment is A and is denoted as option A.
<h3>What is Velocity?</h3>
This is referred to the rate of change of distance with time and the unit is metre per seconds.
A shows the direction of motion is same as the direction of velocity and is the tangent at that particular point hence why it was chosen as the most appropriate choice.
Read more about Velocity here brainly.com/question/6504879
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