Awater wave is a shallow-water wave if the water depth d is less than a/10. it is shown in hydrodynamics that the speed of a shallow-water gd, so waves slow down as they how long does it take a wave to move the last 120 m to the shore? assume that the waves are so small that they don't break before reaching the shore. wave is v= express your answer to two significant figures and include the appropriate units. move into shallower water. ocean waves, with wavelengths of typically 120 m, are shallow-water waves when the water depth is less than 12 m. consider a beach where the depth increases linearly with distance from the shore until reaching a depth of 5.8 m at a distance of 120 m ha ?

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?