Barium replaces calcium in the following reaction: ba caco3 → baco3 ca. what type of reaction does this represent?

What is the average speed of particles of atoms at room temperature?

How do you think television programs movies and car commercials influence driving behavior

Which will be moving faster after 3.0 s, a cyclist maintaining a constant velocity of 15 m/s straight ahead or a race car accelerating forward from a stoplight at 4.0 m/s^2"

A researcher favors scientific work that states that his favorite type of exercise is the most beneficial and ignores work that says other types of exercise might be more beneficial.

Which of the following is a possible explanation for a set of observations or answer to a scientific question? A. prediction B. hypothesis C. variable D. law ?

Quantum physics would most likely be needed to understand the motion of which of the following? A. an atom B. a cell C. a ball D. a galaxy

Sharon throws a 0.20 Kg with an acceleration of 10 m/s/s. (a) What force did she exert on the ball? (b) What force did the ball exert on her?

What are three ways that extra carbon is getting to the atmosphere?

A girl runs 20.9 m/s East for 13.7s. How far does she go?

Is it possible to have a weak acid or base?