SciShow
Which Seafood Is Better for the Environment: Farmed or Wild Caught?
There’s no doubt that fish is a great source of protein in one’s diet. But the debate about whether fish farming or commercial fishing is worse for the environment continues and, as you might suspect, there isn’t a straightforward answer.
SciShow
The High-Tech Future of Sustainable Fishing
We’ve gotten maybe too good at fishing, and as a result we’ve completely transformed the oceans. So what can we do to make fishing more sustainable and still enjoy our fish and chips?
Curated Video
Combine harvesters
Find out how a combine harvester separates grains from chaff using sieves. Material processes - Separating mixtures - Separation by sieving Learning Points The size of the mesh in a sieve ensures that solids are separated correctly. A...
Curated Video
Surface Area
“Surface Area” will show the proper methods of acquiring the surface areas of different shapes.
Flipping Physics
#21 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about using Newton's 2nd Law to determine the acceleration of a block being pulled at an angle on a level surface.
Flipping Physics
#67 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about using the Right Hand Rule to determine the Net Magnetic Force on a current carrying loop near a Bar Magnet.
Flipping Physics
#5 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the net torque on a cylinder with multiple radii.
Flipping Physics
#4 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about using the derivative and Netwon's 2nd Law to determine the time at which the net force on an object is zero.
Flipping Physics
#32 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the average net torque on a wheel when we know the change in its angular speed, moment of inertia and change in time.
Flipping Physics
#30 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the equation for the net torque on an cylinder with two radii in static equilibrium.
Flipping Physics
#22 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about finding the coefficient of kinetic friction for a block being pulled at an angle relative to a level surface.
Flipping Physics
#20 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
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.
Flipping Physics
#14 Mechanics Multiple Choice Solutions - AP Physics C 1998 Released Exam
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.
Flipping Physics
#61 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about graphing the magnitude of the net electric field created by two positive point charges.
Flipping Physics
#57 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the relationship between frequency and radius for a charged particle moving in a circle in a constant magnetic field.
Flipping Physics
#55 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about finding the kinetic energy of an electron in orbit around a proton
Flipping Physics
#53 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about crossed electric and magnetic fields causing a beam of protons to pass undeflected.
Flipping Physics
#49 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
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.
Flipping Physics
#46 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the net electric potential caused by two positive charges.
Flipping Physics
#45 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the net electric field caused by two positive charges.
Flipping Physics
#40 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about the magnitude of the net Coulomb's Force on one charge caused by two other charges.
Flipping Physics
Force vs. Time on a Dynamics Cart
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...
Flipping Physics
Introductory Static Friction on an Incline Problem
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?
Flipping Physics
Introductory Kinetic Friction on an Incline Problem
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?