Student performs experiments on acids and bases. which is not a scientific experiment? she uses an acid-base indicator to measure the ph of four different solutions. she mixes two solutions and measures their ph before and after. she asks her lab partner which base he thinks is hardest to study. < -- my answer she measures the temperature of a solution before and after adding h2so4.

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy