Which of the following reactions best illustrates the Law of Conservation of Mass? A. H2O2 → H2O + O2
B. Na + CuS → Na2S + 2 Cu
C. K + AgCl → KCl + Ag
D. NaOH + 2 HCl → NaCl + H2O

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?