Courses
Teacher-curated, self-paced courses. Looking for a guided sequence through a full topic? See Learning Paths.
3 courses
Pressure and Fluids at Rest
Physics · High School (11–12) · Pressure and Fluids
FreeCh 9 · 1/3
Why do your ears hurt when you dive deep, and how can a small force lift a car in a garage? In this course we define pressure, we find how it grows with depth, we use Pascal's law for the hydraulic lift, we measure the pressure of the air and of a gas, and we use Archimedes' principle to find when a body floats or sinks.
3Lessons12Problems2Python Labs1Question Set1Mock Test
Shear Modulus, Bulk Modulus and Poisson's Ratio
Physics · High School (11–12) · Elasticity and Mechanical Properties of Solids, Pressure and Fluids
FreeCh 8 · 2/3
A solid can be stretched, but it can also be sheared and squeezed, and a stretched wire also gets thinner. In this course we find the shear modulus and the bulk modulus, we see why a liquid has no shear modulus, we find how much water is compressed in the deep sea, and we use Poisson's ratio to connect the three moduli.
3Lessons12Problems2Python Labs1Question Set1Mock Test
Pressure and Buoyancy
Physics · High School (9–10), General · Pressure and Fluids
FreeCh 3 · 3/3
A sharp knife cuts easily, but a blunt knife does not. A ship made of iron floats, and a small iron nail sinks. We learn about pressure in solids, liquids and air, and about the upward push of a liquid. Then we meet the idea of Archimedes.
3Lessons11Problems2Python Labs1Question Set1Mock Test