Answer:
Speed of the wave is 7.87 m/s.
Explanation:
It is given that, tapping the surface of a pan
of water generates 17.5 waves per second
We know that the number of waves per
second is called the frequency of a wave.
So, f= 17.5 HZ
Wavelength of each wave,
A = 45 cm = 0.45 m
Speed of the wave is given by:
175 × 0.45
V= 7.87 m/s
So, the speed of the wave is 7.87 m/s
Hence, this is the required solution.
The reflecting wave flips upside-down on a stretched string when the wave moves from a less dense part of the rope moves toward a boundary that has a higher density. Hence the correct answer is (Option E).
<h3>What is a Reflecting Wave?</h3>
A reflecting wave is a wave that abruptly changes its propagation direction when it hits the boundary between two media.
An echo is a real-world example of a reflecting wave.
Learn more about Reflecting Waves at:
brainly.com/question/64516
Answer: 0.14 Hz
Explanation:
We are told the person counts 10 waves in 68 s, from this information we can calculate the frequency
, which is defined as the number of oscilations or waves per unit of time. Then:


This is the frequency of the ocean waves. Now, according to the International System of Units (SI), frequency is measured in Hertz (
), which is equivalent to
.
So, according to this, the frequency of the ocean waves is 
All three choices are correct.