INTRODUCTION TO ELECTRONICS: Energy and Power ( Part 2 )

Newton’s First Law of Motion states that a body that sits still or moves with a constant velocity with respect to a motionless observer will have its status unaltered until acted upon by an unbalanced force. Such a change in motion is accompanied by an acceleration, which is a change of velocity of an object:Continue reading “INTRODUCTION TO ELECTRONICS: Energy and Power ( Part 2 )”

INTRODUCTION TO ELECTRONICS: Metric Prefix Conversions ( Part 2 )

The number 1 can be formed via the establishment of a ratio of logically related quantities: A = A ( A / A ) = 1 A = B ( A / B ) = 1 And, ( B / A ) = 1 Furthermore, the product of any number multiplied by 1 is theContinue reading “INTRODUCTION TO ELECTRONICS: Metric Prefix Conversions ( Part 2 )”

INTRODUCTION TO ELECTRONICS: Electrical Quantities and their Corresponding SI Units

The International System ( SI ) has established internationally accepted values for physical quantities. These agreed-upon values constitute the building blocks of many scientific fields of study, including electronics. Each quantity in question is accompanied by a symbol, and each symbol can be substituted with an SI unit that gives it meaning. Consider the followingContinue reading “INTRODUCTION TO ELECTRONICS: Electrical Quantities and their Corresponding SI Units”

INTRODUCTION TO ELECTRONICS: Electrical Units and Metric Prefixes

Physical realities would be meaningless without internationally standardized definitions that quantify their existence. Within the field of electronics, there are electrical units of measure that are so common that becoming familiar with them is highly advisable for new students. It is important to note that the aforementioned electrical phenomena occur in measured quantities that areContinue reading “INTRODUCTION TO ELECTRONICS: Electrical Units and Metric Prefixes”

ENERGY AND MOMENTUM: The Joule

The International System of Units ( SI ) uses seven base units to describe seven fundamental quantities that can be measured by scientists: Symbol Name  Base quantity second ( s )     time meter ( m )        length kilogram ( kg )  mass ampere ( A ) electric current kelvin (Continue reading “ENERGY AND MOMENTUM: The Joule”

AP PHYSICS: Average Speed

Q: A distance runner has just finished her race. During the first 3 kilometers, she ran with a constant speed of 5 meters per second. During the latter 7 kilometers, she ran with a constant speed of 14.4 kilometers per hour. What is her average speed for the race? A: First, take note that theContinue reading “AP PHYSICS: Average Speed”