A scuba diver uses an empty vertical tube, closed at the top and open at the bottom, to measure his depth below sea level when diving in the ocean. The tube is 7.30 cm long. He dives below the surface until the water has risen into the tube a distance of 2.78 cm from the open end of the tube. Assuming the temperature of the air in the tube stays constant during the dive, what is the diver's depth at this point? The average density of sea water is 1,030 kg/m3.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.