Figure 5-1 shows a portion of a blank periodic table. identify the segments labeled a and b. question 18 options: a is a group and b is a period. a is a period and b is a group. a and b are both periods. a and b are both groups.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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.

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring