Consider the car driving around a circular track .once stated, the driver maintains a speed 0f 45m/h. compare the driver's velocity with his acceleration in this case.
a.)the car is accelerating because it is changing direction but the velocity is constant.
b.)the car is traveling at a constant rate of speed so it is not accelerating and the velocity does not change
c.)acceleration is the change in velocity so the car is experiencing a change in velocity and it is accelerating
d.)the car is traveling at a constant rate of speed so it is not accelerating but the velocity changes because the direction the car travels is constantly changing.

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Label a-f based on the table using c for concentrated and d for dilute