Ocean waves are hitting a beach at a rate of 3.5 hz. what is the period of the waves?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel