At a wedding reception, you notice a child who looks like their mass is about 25 kg running across the dance floor then sliding
2 answers:
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Answer:
the wave represents the second harmonic.
Explanation:
Given;
length of the cord, L = 64 cm
The first harmonic of a cord fixed at both ends is given as;
The wavelength of a standing wave with two antinodes is calculated as follows;
L = N---> A -----> N + N ----> A -----> N
Where;
N is node
A is antinode
L = N---> A -----> N + N ----> A -----> N = λ/2 + λ/2
L = λ
The harmonic is calculated as;
Therefore, the wave represents the second harmonic.
L = λ
Answer:
The choice D.
I hope I helped you^_^