If the horizontal distance from a crest to a trough is 1.0 m, what is the wavelength?
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Suppose you notice that 20 waves pass a point in 5 seconds. What
is the frequency? How many waves would pass a point in 1 sec if
the wave frequency were two times greater?
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i am a teacher. how am i supposed to explain the lesson to my kids.
thx to all who help.=]
its appreicated.
2007-01-22 18:18:22 · 3 answers · asked by iamsosxehayy=] t 1 in Education & Reference ➔ Homework Help
Sailing, sailing, over the bounding...
2007-01-22 18:42:38 · answer #1 · answered by hartless63 4 · 0⤊ 0⤋
a) Draw a picture of a full wave. Draw vertical lines at each crest and at the middle trough. If the crest to trough is 1m, then the trough to the next crest is 1m. Thus, crest to crest is 2m, and that's the wavelength.
b) Frequency is in cycles per second. 20 waves (i.e., 20 cycles) in 5 seconds is then 20/5 = 4 cycles per second (also 4 Hertz or 4Hz).
If you double the wave frequency, then you've doubled the number of cycles and thus the number of waves.
2007-01-22 18:26:05 · answer #2 · answered by tony1athome 5 · 0⤊ 0⤋
mild waves. i do not understand why precisely. yet at present i'm in phyisics and keep in mind that earthquake waves, water waves, and slinky waves are very similar. i keep in mind that doesn't answer why yet i wish this by some ability enables.
2016-10-15 23:37:18 · answer #3 · answered by muniz 4 · 0⤊ 0⤋