College Physics Pro Help!
Q: How do we know if/when an object’s momentum has changed? Or do we always assume it’s constant because of the Law of Conservation of Momentum? Are there any special cases where this doesn’t apply? A: According to the Impulse-Momentum Theorem, the momentum of an object or a system (multiple objects) changes if an impulse […]
2020-10-31 Highlights of Question&Answer Read More »
Q: Are there any key words to look for in a problem when trying to figure that out? A: In general, there are always Key Words that can help you interpret the texts and identify the problems. However, those key words vary from a topic to another. We have to learn how to recognize them
2020-10-30 Highlights of Question&Answer Read More »
Under the current pandemic, most kids stay at home and perform a distance learning via the internet. My kid’s school distributes a so-called “Challenge Box” to each student every couple of weeks, so that kids can enjoy some interesting STEM projects at home. Thinking a little deeply, we may find Physics behind many projects. Kids
Kids also have the fun of Physics! (1) Read More »
How many beautiful symmetries do we have in Physics? Numerous! * Projectile Motion * Circular Motion * Rotation * Momentum Conservation * Energy Conservation * Simple Harmonic Motion * Sinusoidal Wave * Standing Wave * Optical Reflection * Carnot Cycle * Gauss’s Law
Symmetries in Physics are beautiful! Read More »
* Science of matter, energy, and interactions between! * A foundational subject! * Basis of understanding other sciences!
