The act or process of changing position and/or direction is called

a. acceleration b. distance c. motion d. force

This is how zirconium appears in the periodic table. rounded to the nearest whole number, how many electrons are in an atom of zirconium?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.