The voltage ( V ) or “ potential difference “ of a DC power source is the drop in energy ( J ) that a coulomb ( C ) of charge will experience by traveling through a resistance ( R ) found within a circuit. The current in question flows along a closed, non-diverging route:Continue reading “INTRODUCTION TO ELECTRONICS: Resistors in Series Circuits”
Tag Archives: energy
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: 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 )”
ENERGY AND MOMENTUM: What is the final velocity of the hovering disk?
Q: A disk of mass 0.5 kg slides with a constant velocity of 2.4 m/s over an air table before colliding with an elastic band. If the band exerts an average force of 1.4 Newtons on the disk for 1.5 seconds, what is the final velocity of the disc? A1: The disc will experience aContinue reading “ENERGY AND MOMENTUM: What is the final velocity of the hovering disk?”
ELECTRICITY: Wattage
Q: A parallel electrical circuit connects the electrical outlets located within a room. A 20-A fuse is put into place to protect the circuit from unexpected surges of current ( I ). The voltage drop across each circuit element is V = 120 V. What is the maximum power ( W ) output that canContinue reading “ELECTRICITY: Wattage”
ENERGY and MOMENTUM: What is the Final Velocity of the Ball?
Q: A 10 kg iron ball moves in an Eastward direction at 5.0 m/s. It collides with a 5.0 kg rubber ball moving Northward at 10 m/s. After the collision, the iron ball moves 60° East of North with a speed of 4.0 m/s. What is the velocity of the rubber ball after the collision?Continue reading “ENERGY and MOMENTUM: What is the Final Velocity of the Ball?”
ENERGY AND MOMENTUM: Artificial Gravity in a Spinning Spacecraft.
Q: A team of engineers is building a spaceship to go to Jupiter. Their design includes a gravity ring, a spinning section where (in the ring’s reference frame) astronauts are pushed outwards by the centrifugal force. In their current design, the ring has to spin once every ten seconds in order to provide the sameContinue reading “ENERGY AND MOMENTUM: Artificial Gravity in a Spinning Spacecraft.”
ENERGY AND MOMENTUM: ( x ) and ( y ) Vector Components of Motion.
Q: A steel ball of mass 10 kg moves due East at 5.0 m/s. It collides with a rubber ball of mass 5.0 kg moving at 10 m/s due North. After the collision the steel ball moves at an angle of 60° East of North with a speed of 4.0 m/s. What is the velocityContinue reading “ENERGY AND MOMENTUM: ( x ) and ( y ) Vector Components of Motion.”
RENAISSANCE PHYSICS 