To minimize zero error the pointer of instrument should be adjusted.
A. at zero mark
B. before zero mark
C. after zero mark
D. at the middle mark

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a. m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33