One of the most important things we have learned about the Moon is that while it revolves around the Earth, it always points the same face toward our planet. That is the only face we see when we look at the Moon from home. In fact, we...

Universal Law of Gravitation explores Newton’s Universal Law of Gravitation by defining and providing examples.

Lesson 6 (Friction) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem1:...

This video is a review of Two Dimensional Vectors. This video goes over applications of vectors. 3 examples are covered illustrating how to solve static equilibrium problems.

The watt balance lets researchers determine the mass of an object indirectly by determining two quantities: the strength of the magnetic field, and the current running through a coil of wire.

Lesson 18 (Electric Charge and Light) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you!...

This video is a lecture on the topics of gravity and orbits. The speaker starts by discussing how objects in orbit remain in orbit due to the gravitational force experienced from other celestial bodies. They then explain how the...

This video provides an overview of non-contact forces, such as gravitational, electric, and magnetic forces, explaining how they act at a distance without physical contact between objects. It covers the concepts of force magnitude,...

Gravity is all around us. This interesting program introduces students to the force of gravity by using easy-to-understand examples of this force at work. The role of gravity in our solar system is also explored. Concepts and...

This nugget explains about the different types of forces.

Your friends might believe that Physics is dry and boring, but we’re going to prove them wrong! In subtopic 1, we’ll design theme park rides, such as rollercoasters and the rotor (aka the gravitron). Then, in subtopic 2, we’ll journey...

A force is a push or a pull that acts on an object.



Forces are vector quantities because they have both magnitude and direction, and so can be represented by an arrow. Scalar quantities have only magnitude and no...

Show The Factor by Which Electricity is Stronger than Gravity

This live-action video program is about the word pull. The program is designed to reinforce and support a student's comprehension and retention of the word pull through use of video footage, photographs, diagrams and colorful, animated...

Gravity is a heart-warming story of attraction. These farm animals would fall for each other even if the laws of Physics stop working! This lesson will formally revisit the gravitational force (from year 11), focusing on Newton’s Law of...

Two 0.0018 kg balloons each have approximately equal magnitude excess charges and hang as shown. If θ = 21° and L = 0.39 m, what is the average number of excess charges on each balloon?

Lesson 8 (Gravitation and Orbits) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this...

This 'chute is out of this world! Take a trip through the solar system with the Planetary Parachute, learn the different planets, work together as a team and get an arm workout the whole time.

Lesson 16 (Simple Harmonic Motion) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you! Exercises...

Gravity is mysterious, isn't it? If all matter exerts gravity, why don't we all just drift towards each other all the time? Well, as you know, it depends on the masses of the two objects and the distance between them. Your friend says...

This video explains how objects orbit other objects in space, with a focus on natural and artificial satellites. The video starts by discussing Earth's orbit around the sun and how the gravitational force of the sun causes the Earth to...

Lisa, are you serious? Alright, just one more favor. This one is a little trickier than the previous, because there is some trigonometry involved, beyond the kinematics and friction from the previous problems. What will become of your...

You're really getting good at building physics toys in your garage! Check this awesome pulley system. You put your physics knowledge to the test and try to make a prediction about what will happen when you let these two blocks go. Will...

Lisa is moving again already! I dunno, I think there were bedbugs. This time you have a different plan, but you will still need kinematics and Newton's laws to find out how much time and effort stand between you and more snacks. Give it...