This problem is about using Newton's 2nd Law to determine the velocity of two identical stars in a fixed orbit around their mutual center of mass.

This problem is about finding the centripetal force (or the net force in the in direction) for an object on a spring moving in uniform circular motion.

This problem is about graphing the magnitude of the net electric field created by two positive point charges.

This problem is about the relationship between frequency and radius for a charged particle moving in a circle in a constant magnetic field.

This problem is about finding the kinetic energy of an electron in orbit around a proton

This problem is about crossed electric and magnetic fields causing a beam of protons to pass undeflected.

This problem is about using the Right Hand Rule to determine the net force on a current carrying loop next to a current carrying wire.

This problem is about the net electric potential caused by two positive charges.

This problem is about the net electric field caused by two positive charges.

This problem is about the magnitude of the net Coulomb's Force on one charge caused by two other charges.

When the forces in a free body diagram don’t change students often think that Newton’s Second Law will yield the same results. This demonstration shows that is not true. This is a step-by-step analysis of tension force as a function of...

A book is resting on a board. One end of the board is slowly raised. The book starts to slide when the incline angle is 15°. What is the coefficient of static friction between the book and the incline?

You place a book on a 14° incline and then let go of the book. If the book takes 2.05 seconds to travel 0.78 meters, what is the coefficient of kinetic friction between the book and the incline?

Gross and Net Profit

Journalist Steven Brill discusses how the U.S. lost sight of the common good.



When people use their success to only help themselves and not the common good, is meritocrac

y

failing?



According to...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

This short video describes the different types of gladiator such as the retiarius and the murmillo together with the different weapons and helmets they wore; it even mentions the female gladiators that fought

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

Explanation of Net Promoter Score

Summing the forces is nothing new, it is vector addition. This video compares summing the forces to graphical vector addition. This video builds off the previous video "A Three Force Example of Newton's 2nd Law with Components” which you...

In order to use Newton’s Second Law, you need to correctly draw the Free Body Diagram. This problem explains a common mistake students make involving the force applied. We also review how to find acceleration on a velocity as a...

This video could also be called "Finding the Force of Friction between a Dynamics Cart and Track” because we use Newton’s Second Law to analyze a demonstration and show how negligible the force of friction really is.

The application of Newton’s Second Law is when you really understand what the net force equals mass times acceleration where both force and acceleration are vectors really means. Therefore, we introduce Newton’s Second Law and then do...

VS Mount Suribachi being bombarded w/ explosions, Navy battleship firing cannons just off shore at sea / VS Admiral Richmond Kelly Turner looking over notes, various radio operators in communication room, one writing on board, seaman on...