When studying the physics of currents, circuits and resistors, it is good to know what these terms mean. Current: The rate of flow of charge. Ø The electrical field developed due to potential difference in a wire drives the current in the wire. Ø The current leaving a resistor* is exactly same as entering to … More Physics Phun: Current Resistance and Circuits
By: Ryan Dunagin I know what you’re thinking. Before you gloss this over as some complicated upper division math blog, don’t be afraid! Vectors do apply to physics and engineering quite a bit, even the most general. But some starting students see the word vector and immediately think complicated math. The goal of this blog is … More Vector Analysis for Students Who Are in a Hurry
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Building blocks: All matter is composed of atoms, held together by chemical bonds; atoms are composed of nuclei and electrons, held together by electric forces; nuclei are composed of nucleons (protons and neutrons) held together by the strong nuclear force; nucleons are composed of quarks, held together by weak nuclear forces. The study of nuclear … More The Energy of Everything
What is Black Hole? Black holes are one of the most popularized ideas of contemporary physics, but are misunderstood by the general public. Colloquially, they’re considered objects shrouded in mystery that have the ability to absorb everything in their wake. While this isn’t totally incorrect, astrophysicists actually understand some of the mathematics behind black holes … More The Physics of Black Holes
Valuable vectors: When dealing with the motion of an object in 2 dimensions, also called projectile motion, we take advantage of one fascinating feature of vectors- components! Recall that a vector has direction and magnitude; this means that the vector has a length (magnitude) and is at an angle with “something else” (direction). We normally … More How to Win at Angry Birds