The water waves below are traveling along the surface  of the ocean at a speed of 2.5 m/s and splashing periodically against Wilbert's perch. Each adjacent crest is 5 meters apart. The crests splash Wilbert's feet upon reaching his perch. How much time passes between each successive drenching?

Pepe and Alfredo are resting on an offshore raft after a swim. They estimate that 3 m separates a trough and an adjacent crest of surface waves on the lake. They count 14 crests that pass by the raft in 20 seconds. Calculate how fast the waves are moving.

Ocean waves hitting a beach are always found to be nearly normal to the shore.

If you toss a stone in still water, concentric circles are formed. What form will waves have if a stone is tossed into smoothly flowing water?

Why do some waves travel at the speed of light?

You notice that 8 ocean waves hit the shore every 40 seconds at a constant rate. What is the frequency of the ocean waves?

If a person increases how fast they are shaking a spring up and down, what characteristics of the wave change? What characteristics of the wave stay the same? Why?

Suppose an ocean wave under fairly calm conditions has a height of 1/3 meter and carries a power of 500  watts for every meter along  the length of the swell. These are typical values for a calm day at sea.  How much more energy would be carried by the waves  that are 3 meters high (10 feet!) in a stormy sea?     81 times more energy     9 times more energy     730 times more energy     the same energy

A boat produces water waves as it sails along a river. You notice that 10 waves hit the bank in 4.8 seconds. If distance between successive wave crests is 3.8 centimeters, how far would these waves travel in 35 seconds. Express your answer in centimeters to at least 3 significant figures.