Awater wave traveling in a straight line on a lake is described by the equation: y(x, t)=(2.75cm)cos(0.410rad/cm x+6.20rad/s t)where y is the displacement perpendicular to the undisturbed surface of the lake. a. how much time does it take for one complete wave pattern to go past a fisherman in a boat at anchor, and what horizontal distance does the wave crest travel in that time? b. what are the wave number and the number of waves per second that pass the fisherman? c. how fast does a wave crest travel past the fisherman, and what is the maximum speed of his cork floater as the wave causes it to bob up and down?
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Physics, 22.06.2019 17:40
Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.
Answers: 2
Physics, 22.06.2019 20:50
In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
Answers: 3
Awater wave traveling in a straight line on a lake is described by the equation: y(x, t)=(2.75cm)cos...
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