An earthquake occurred at 9:40 A.M. on Nov. 1, 1755, at Lisbon, Portugal, and started a tsunami (often called a tidal wave) in the ocean. It produced waves that traveled more than 540 ft/sec (370 mph) and reached a height of 60 ft. If the period of the waves was 30 min or 1800 sec, estimate the length L between the crests. Entregar

A trapezoidal trough 10 ft long, 4 ft wide at the top, 2 ft wide at the bottom, and 2 ft deep. If water flows in at 10 cu.ft. per min, find how fast the water surface is rising, when the water is 6 in deep.

How far does the tip of a 1.39 m pendulum travel as it swings through an angle of 6.3°? The distance through which the end of the pendulum swings is m. (Simplify your answer. Round to three decimal places as needed.)

A projectile was fired from level ground and just cleared a wall that is 10 m high and 20 m from the point of projection. If the angle of projection was 36°, find the initial speed of the projectile in m/s correct to the nearest integer.