A group of swimmers is resting in the sun on
an off-shore raft. They estimate that 2.85 m
separate a trough and an adjacent crest of
surface waves on the lake. They count 13
crests that pass by the raft in 20 s.
How fast are the waves moving?
an off-shore raft. They estimate that 2.85 m
separate a trough and an adjacent crest of
surface waves on the lake. They count 13
crests that pass by the raft in 20 s.
How fast are the waves moving?
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1 answer
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