PHY 102 Chapter Notes - Chapter 2: Inverse Relation, Power Law
Document Summary
Science involves complex procedures that must be documented with precision so that others can try the activity for themselves. Scalar: can be expressed as a single number. Vectors: require two numbers, a magnitude and a direction. Change can be described in words, tables of numbers or graphs. Described in words, equations with words or equations in symbols and numbers or in graphical form. Equations define a precise mathematical relationship among two or more measurements. : change is happening in some quantity. Direct relationship: the two variables change together. Inverse relationship: one increases while the other decreases. Power law relationship: one variable changes much quicker. Inverse square relationship: sharp fall off to one variable where the other changes gradually. All systems of units help us describe physical objects and events. Conversion factors: shift us from one system of units to another.
