Scientists are doing a study on bad breath. They give Group A a sugar pill and Group B gets the new breath mint. An hour later the scientists record the freshness. 75% of Group B has fresher
breath. What is the dependent variable?

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

When an object is heated it contracts. a. true b. false

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?