Awater wave traveling in a straight line on a lake is described by the equationy(x, t)=(3.75cm)cos(0.450cm? 1x+5.40s? 1t)where y is the displacement perpendicular to the undisturbed surface of the lake. part ahow much time does it take for one complete wave pattern to go past a fisherman in a boat at anchor? part bwhat horizontal distance does the wave crest travel in that time? part cwhat is the wave number? part dwhat isthe number of waves per second that pass the fisherman? part fwhat is the maximum speed of his cork floater as the wave causes it to bob up and down?

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

You can melt ice by applying pressure because the solid/liquid line has a slope.

You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger