Could Bobbie Really Hold 2 Spaceships Together in 'The Expanse'?

Could Bobbie Really Hold 2 Spaceships Together in 'The Expanse'?

Illustration: Rhett AllainIt’s not quite clear if the Belter ship just pulls back the gangplank or fires its thrusters to move away—so, I’m going to assume that it uses thrusters.

How Long Would It Take for a 747 to Stop, Like in 'Tenet'?

How Long Would It Take for a 747 to Stop, Like in 'Tenet'?

But there was one email question that I didn't ignore.So, the question: What is the minimum braking distance for this aircraft.The email included some details like the estimated mass (200,000 lbs) and the fact that it has 8 of its 16 brakes installed.

What's a Semi-Log Plot and How Can You Use It for Covid Data?

What's a Semi-Log Plot and How Can You Use It for Covid Data?

Let's start with a simple plot of the number of confirmed cases as a function of day number.If you want to examine both the huge USA data and the not-so-huge South Korea data, you need a semi-log plot.

What Even Is Friction, Anyway?

What Even Is Friction, Anyway?

In some way, the atoms on the surface of the wood block are interacting with the surface atoms on the table.That is to say, the frictional force pushes in a direction to try to prevent sliding.

Trump’s New Space Force Missile Might Be Too ‘Super-Duper’

Trump’s New Space Force Missile Might Be Too ‘Super-Duper’

That means a super-duper missile would have a velocity of 137 kilometers per second.So if we want a super-duper fast missile, it's going to have to be in space.If you want a missile to go faster, you need more fuel, which will increase the mass.

Build Your Own Pinhole Videocam!

Build Your Own Pinhole Videocam!

The simplest way to project an image onto a screen is with a pinhole.It seems magical, but the light from that hole would project an image of the outside world onto a wall in the room.

How to Measure Pressure With a Phone and a Baggie

How to Measure Pressure With a Phone and a Baggie

The idea is that the weight increases the air pressure inside the bag, and you can measure the difference with the phone.Would the pressure in the bag be: (a) the same, (b) greater than, or (c) less than with the large square.

Hurling Satellites Into Space Seems Crazy—but Might Just Work

Hurling Satellites Into Space Seems Crazy—but Might Just Work

Before I get to the calculations, let's look at the details of the system and the physics involved.

Tesla Cybertruck Vs. a Ford F-150: It's All About Friction

Tesla Cybertruck Vs. a Ford F-150: It's All About Friction

Now it's this video of a tug-of-war between the Cybertruck and a Ford F-150 .It's all about friction and the interaction between the tires and the road.The Tesla Cybertruck, with its steel outer shell, is probably more massive than a Ford F-150.Let's be clear.

Fly Me to the Moon … With Elephants!

Fly Me to the Moon … With Elephants!

I recently ran across an animation showing a Saturn V rocket during liftoff, but with a small modification.Video: Rhett AllainBefore it was launched, the metal ball was at rest and thus had a momentum of zero.

If Each of Us Planted a Tree, Would It Slow Global Warming?

If Each of Us Planted a Tree, Would It Slow Global Warming?

So to start, let’s figure out how much carbon a single tree can hold.To convert this to mass, I’m going to assume a wood density (ρ) of 500 kilograms per cubic meter, which is half the density of water.The mass of my generic tree would then be:Illustration: Rhett Allain

What to Expect From a Pooch on a Paddleboard

What to Expect From a Pooch on a Paddleboard

First, there is the frictional force that the board exerts on the dog.And that means the dog pushes back on the board with an equal force in the opposite direction (Fdb).

Even Physics Textbooks Tend to Get Friction Slightly Wrong

Even Physics Textbooks Tend to Get Friction Slightly Wrong

Let's consider a very basic physics problem involving pushing a block with a frictional force .Let's use these two ideas for some simple physics cases and see what happens.Here is the momentum principle (in 1-D):Rhett AllainNow let's use this.

Get to Know Maxwell's Equations—You're Using Them Right Now

Get to Know Maxwell's Equations—You're Using Them Right Now

Get to Know Maxwell's Equations—You're Using Them Right Now. The behavior of magnets can be explained with Maxwell's equations, which also describe the behavior of light and everyday objects like electric motors.

The Secret to Soap Bubbles' Iridescent Rainbows

The Secret to Soap Bubbles' Iridescent Rainbows

When it comes to reflected light, you get a half wavelength phase shift if it reflects off a material with a higher index of refraction. As the film thickness changes, different wavelengths of light achieve constructive interference.

Estimate the Friction Coefficient in That Massive Nascar Pile-Up

Estimate the Friction Coefficient in That Massive Nascar Pile-Up

All I need is to determine the acceleration of a sliding car and I can get a value for the coefficient of kinetic friction between the tire and the road.

The Way Superman Picks Up a Building Is a Physics Travesty

The Way Superman Picks Up a Building Is a Physics Travesty

Rhett Allain Let's start with a rough estimate of the pressure between Superman's hands and the building. Now that I have the force that Superman pushes up on the building, I can also calculate the pressure.

How Do Viral Videos Make Money? YouTubers Share Their Secrets

How Do Viral Videos Make Money? YouTubers Share Their Secrets

Beyond that there are merch deals, collaborations with brands, and other promotions YouTubers can use to bring in cash from their channels."I don't think you get paid for subscribers [though]," says Rhett, one half of Rhett and Link, the team behind Good Mythical Morning—a fact that his cohost calls "sad."But that's just one of the tricks of the trade revealed in this episode of Creator Support, wherein we asked a host of YouTubers questions that fans and aspiring viral video creators posted on Twitter.