From the previous learning, we know that energies within an energy system transfer into different forms, but the total energy does not...

Today, we continued yesterday's investigation and discovered several new things by adding the thermal energy (friction) into the energy...

Today, we learned the changes of kinetic energy, potential energy, and total energy when a person is skating. The conclusions that we...

Have you ever seen a light bulb with "energy efficient" mark on it and wondered what that means? Today, we are going to talk about...

Today, we learned three new equations: W = |F| |Δd| cos θ W net = E kb - E ka = ΔE k W net = F net (Δx) (cos θ) W stands for work, which...

After yesterday's investigation, we learned the formulas to calculate the kinetic energy, the gravitational potential energy and...

We still have only a very limited understanding of most aspects about the new unit. A couple of things that we learned today including...