It's not a trick question: You can make a battery out of concrete by storing gravitational…
With simple tools, there are three things you can observe to support the heliocentric model of…
Your phone can measure acceleration, magnetic field, sound, location, and maybe more—which turns it into a…
Surf's up, dude.
Really, this is a classic projectile motion physics problem.
College is like a chocolate chip cookie, and courses—online or not—are the chocolate chips.
College is like a chocolate chip cookie, and coursesâ€”online or notâ€”are the chocolate chips.
To hover a human over the ground, you need some serious engineering—and the momentum principle.
To hover a human over the ground, you need some serious engineeringâ€”and the momentum principle.
You might think this is just a boring physics problem—but you'd be wrong.