The voltage ( V ) drops across parallel-circuit resistors ( R ) are equal in magnitude; conversely, the currents ( I ) traveling through parallel branches may or may not be the same. For this reason, parallel circuits are sometimes referred to as being current dividers. Take the following diagram into consideration: Since the R1Continue reading “INTRODUCTION TO ELECTRONICS: The Balanced Wheatstone Bridge“
Tag Archives: displacement
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: Graph-Slope Interpretation
Consider the time vs. position plots of an object in the graph below: Q: During which interval is the object moving forward with a constant velocity? Over which interval is the object accelerating, sitting still, and moving opposite to the initial direction of motion? A: We begin by designating the vertical direction as being theContinue reading “AP PHYSICS: Graph-Slope Interpretation”
AP PHYSICS: Graph-Slope Interpretation
Interpreting a graph of an object’s acceleration can be tricky, especially when the graph is linear: An object moving with a constant velocity moves through equal distance segments as time transpires. To the contrary, an object that is undergoing a constant acceleration has a velocity that changes as time transpires. As a consequence, plots ofContinue reading “AP PHYSICS: Graph-Slope Interpretation”
AP PHYSICS: Average Velocity
Q: A boomerang travels 500 meters in a southward direction over the course of 90 seconds. The boomerang then makes an abrupt turn eastward and travels 300 meters in 60 seconds. What is the average velocity of the boomerang? A: In a previous problem, the average speed of an object was determined. Speed is aContinue reading “AP PHYSICS: Average Velocity”
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: Vector Addition
Q: An ant travels long distances each day in search of food. On one such occasion, the ant travels 3.0 meters at an angle of 300 north of east. Afterward, the ant travels 2.0 meters to the north. Finally, the ant finds food after traveling 2.0 meters at an angle of 600 south of west.Continue reading “AP PHYSICS: Vector Addition”
KINEMATICS: Free Fall Dynamics
Q: An Olympic high diving platform is situated 10 m above the surface of a pool. If a diver steps off the platform, how long does it take for her to hit the water? A: The only information provided is the 10 m distance between the diving platform and the pool’s surface. This necessitates useContinue reading “KINEMATICS: Free Fall Dynamics”
RENAISSANCE PHYSICS 