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 )”
Tag Archives: SI Units
INTRODUCTION TO ELECTRONICS: Energy and Power ( Part 1 )
Although, energy and power are interrelated concepts, they possess distinct identities of their own. Consider the relatively simple task of inflating a balloon. Blowing a small puff of air into a balloon over a short time-interval will cause the balloon to expand slightly before recoiling to its previous state. Breathing more forcefully into a balloonContinue reading “INTRODUCTION TO ELECTRONICS: Energy and Power ( Part 1 )”
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: Acceleration
An object that moves at a constant speed ( or velocity ) will continue doing so until it is acted upon by a force. Whether such an object speeds up or slows down after being impacted by a force, the change in motion is called an acceleration. Typically, a decrease in motion is referred toContinue reading “AP PHYSICS: Acceleration”
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”
AP PHYSICS: Power of Ten Prefixes
The phrases “ several dozen “ and “ several hundred “ have meanings that are dependent upon suffixes that have been assigned to a numeral grouping of items. It is most practical, however, to have an internationally agreed upon method of assigning prefixes that denote numerical meanings to words. The Systeme International ( SI )Continue reading “AP PHYSICS: Power of Ten Prefixes”
KINEMATICS: Where Will The Daredevil Land?
Q: A stuntman equipped with a parachute rides a bicycle over the edge of a 500.0-meter building. The combined mass of the stuntman and his bicycle is 90.0 kg. If the bike moves at 24.2 m/s as it leaves the building’s edge, at what distance from the building’s base must a cushion be placed inContinue reading “KINEMATICS: Where Will The Daredevil Land?”
RENAISSANCE PHYSICS 