Answered

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For a wave, the _________ is the distance between two successive crests, while the _________ is the time elapsed between two successive crests passing by the same point.

Sagot :

jerrybusiness05

Answer:

The distance between two successive crests of a wave is one way to define its wavelength, so

λ

=

1.15

m

.

The frequency of a wave is the number of waves passing a given point per second, so

f

=

20

16.2

=

1.23

Hz

.

The speed of a wave is given* as

v

=

λ

f

, so here

v

=

1.15

⋅

1.23

=

1.42

m/s

~~~~

*This is because the wavelength is the "distance per wave" and the frequency is the "number of waves per second," so multiplying the two gives "distance per second." This can be verified with dimensional analysis:

meters

wave

×

waves

second

=

meters

second

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