During an investigation, equal volumes of hot and cold baking soda solution and calcium chloride solution were mixed in four cups. A record of the investigation is shown below: Investigation Record
CupBaking Soda SolutionCalcium Chloride Solution
WHotCold
XColdCold
YColdHot
ZHotHot

Baking soda reacts with calcium chloride to form bubbles. In which cup will bubbles form the fastest?
Cup W
Cup X
Cup Y
Cup Z

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance