We see it everywhere in the media, real life, and sometimes it can even happen to you. The sad, terrifying act of being slapped in the face.
Aside from hurting, what are the actual physics behind being unfortunate enough to get slapped?
1) Shown in slow motion, your face has incredibly present properties of intertia. If you look at the video, you can clearly see the skin and tissue stay put while the actual skeletal tissue underneath begins to move. This is because the dense bone moves, e
For the purpose of logic, I will ignore spacecraft because they already hold speed records for anything man made. Because they're awesome.
Okay, so, our first category is Human-Powered Aircraft. No engine, just a dude flying himself in a glider. Some designs include the "wrapped rubber band" method but on a larger scale. To be honest, this record is pretty pathetic. At a whopping 19.8 mph, MIT's Monarch B human powered aircraft holds the record. *Cue streamer and confetti*
We've all heard of the famous "sonic boom" when a jet or rocket passes overhead at a speed greater than the speed of sound. Sound waves are fundamentally compressed tightly behind the object, creating the "bang". But if that is possible with sound, could it be possible with light?
"Photonic Booms", as they're called, are created in situations where light waves aren't given enough time to radiate out into their own paths; they're constricted and are densely packed into each other. T
Some new research from George Washington University dived into the mysterious techniques of flying snakes, and how that actually seem to dart through the air. Could these tactics be used today to solve mechanical issues?
What the researchers did seems a little odd, but hey, it got results. Their tactic was to launch the snakes off actual cranes (don't worry, they can FLY) and observe their gliding abilities.
Just for context: A normal aircraft will gradually increase lift
Earlier today, April 7th, it was announced that a U.S. Navy vessel had confirmed that a "ping" was received by its underwater receiver. What does it mean, and does it guarantee that we've finally put a close to this awful mystery?
When an aircraft as large as the 777 goes down (like Asiana 214), there are dozens of mechanisms that trigger, designed to allow searchers and rescuers to locate the aircraft. In this case, the 777 has many "pingers", or small radios that broadcast weak signals
On July 6th, 2013, an incident occurred that could have been avoided.
A massive (up to 297,550 kg) Boeing 777-200ER simply fell out of the sky, not even a mile from the runway's threshold. The 777, carrying 291 people, smacked into the seawall, immediately ripping the tail section off of the fuselage. Directly causing 2 deaths, the crash was the first fatal accident involving this type of aircraft.
Generally, when an aircraft has an outstanding safety record (like the 777), accident
Did I just get hit with a dump truck or did I just take the AP Physics C exams? Turns out, I took the exams.
Yes, they're over....and with a massive sigh of relief, I can move on with my life and enjoy the rest of my senior year.
But I must be honest...they were the hardest exams I have ever laid my eyes on, and it came as a wake up call to me that, yes, maybe I DO have to work harder in future physics courses.
This year in physics, although rough academically, taught me that one ca
We learn about tectonic plate motion in Earth Science, but I never thought I'd hear about it in the present day. Apparently, it happens faster than I thought, and is extremely visible.
A small patch of land off the coast of Japan sprouted from the sea last November, due to volcanic and seismic activity in the "Ring of Fire" region known to scientists.
The island continued to grow, faster than expected, and finally collided with a much larger island. The outcome? One big island! The region,
It's been a month since MH370 disappeared. Technically, the pings should've stopped by now, but it seems that the black box batteries haven't died yet.
But what really is a black box anyway?
It's a NEON ORANGE rectangular object. The box holds critical instruments, like an altimeter, airspeed indicator, attitude indicator, control positions (as in what the pilot was doing with the plane at that time), time of day, etc.
The second part of the data recorder is the Cockpit Voice R
Imagine living life as a frictionless surface. Imagine getting out of bed, letting your feet hit the ground, and eternally slipping...until you can grab something to stop you, correct? Chances are, your hand would slip as well. Friction is extremely important...and it makes our lives livable. The coefficient of friction of rubber shoe tread (on dry asphalt) is an astonishing .9! We don't notice it, but our shoes are very frictional. The MythBusters did a segment on friction when they buste
Our planet has a lot of gold, silver, diamond...you name it.
But it's nothing. Believe me.
In 1999, UC Berkeley researchers made a high value discovery (no pun intended) by showing that Methane (which is in HIGH quantity on Neptune and Uranus) can be converted to diamond (like carbon is) under intense heat and pressure.
The liquid methane, cooled with liquid nitrogen, was placed in a diamond anvil cell and squeezed to between 10 and 50 billion pascals (gigapascals), or about 100,00
We've all heard the rumor that a penny (dropped from the top of the Empire State Building, or any skyscraper) could kill you if you were an unlucky soul at the bottom. Unfortunately, that doesn't exactly work out. The solution is easy: get rid of air. But that's not practical.
So how fast would a penny actually fall? The answer is found when we consider the idea of terminal velocity; the point at which drag force equals the force of gravity. Although asymptotically approached, acceleration,
Personally, I had never really known my facts about this. To be honest, I wasn't even sure if the U.S. was the only country to have put men on the moon. But, from some hasty research, here's why nobody else has been there:
1) The USSR DID in fact have plans to send a man to the moon. The N-1 Rocket (Saturn V's competitor) was prepped to serve as the propulsion for the missions, but a series of catastrophic failures led to the USSR's decision to halt the program. It was officially cancelled in
The boring white orb that aimlessly spirals around Earth hasn't been stepped on by man since Apollo 17.
But that doesn't mean we're done with it...at all. Here are five things that you (maybe) didn't know about our one and only moon:
1) NASA plans to send a satellite to the lunar surface and dig deep enough in hopes of finding...you guessed it..water! They speculate that there is a frozen layer of it underneath the surface.
2) The Moon will eventually leave us. Using laser reflection
The largest fast food chain in the history of mankind is...well...massive.
With more than 34,000 locations worldwide, McDonald's is awesome and awful at the same time.
Ignoring the politics, let's look at the physics!
On an average day, 300,000,000 people around the world will consume food from McDonald's.
The average amount of calories on the McDonald's menu is 500 calories per meal.
Let's say that each person buys a meal. Here's where it gets gross.
Worldwide, humans consume
Here's a weird one...
Through a study at the University of Washington, researchers have found that, when attacked, Fruit Flies perform the evasive maneuvers similar to those of a modern fighter jet, a seemingly new relation between technology and nature.
When a shadow or other threat was seen by one of the Flies, it would roll rapidly on its side, and then execute a tight turn to end up flying in the complete opposite direction. This tactic is the fundamental maneuver in modern day air fo
To be honest, I was hesitant when I was asked to take AP Physics B two years ago. I certainly had no idea what to expect. As it turns out, I wasn't disappointed. The class itself was intriguing and it motivated me to continue my education in Physics.
As a student pilot, I became interested in how the fluid dynamics actually played out in the air. Last year gave me some important insight on that topic. I became interested in physics beyond the areas of last year, leading me to enroll in this
In a recent study, hikers were reported to have seen their own hands moving about in the COMPLETE darkness of a cave.
This "seeing without light" phenomenon is studied heavily by University of Rochester's Duje Tadin, who explains that humans have sort of a sixth sense, where we are aware of the position of our extremities even with the absence of visible light.
I know what you're thinking...maybe humans are simply capable of seeing weak amounts of infrared light? That's simply not the case
Throughout the age of cyber technology...one thing has always been a menace to our electronic productivity.
There is only one force that can disturb the power of the internet. That force manifests itself as hacking.
Ever since computers were available, people (with their natural evil tendencies) wanted to steal others' information. And so they did.
A recent hack on Adobe could possibly be the largest ever. 152 Million Adobe accounts were discovered by the security firm LastPass to be
Considering this is a physics website, everyone that reads this post will have probably already known what "g-force" is.
But I'm going to talk about it anyway.
Whether you're sitting, standing, or walking while reading this - you're experiencing about +1g. All that means is that you weigh exactly what you weigh. So, if you weigh 150 pounds and you're experiencing +1g, that means you weigh 150 pounds. Simple.
But what if you stood upside down? Are you still under +1g? It sure does
You have two cars.
They're travelling right at each other on a collision course; each one is going at precisely 50mph.
They hit each other...as you could assume.
Does that equate to one car hitting a wall at 100mph? Or is it something different?
I became interested in this paradox after watching Mythbusters' rendition of it (which is, of course, the best show in our current universe).
Their take on it was conducted through a full scale test. Their findings showed that the coll
This March, the F-35 Lightning II made its first public demonstration at an air show.
The U.S. Military is expected to purchase over a thousand of the new jets in total, eventually being put in service with the Navy, Air Force, and Marine Corps.
The Air Force version, the F-35A, will be the lightest and most agile. The thrust to weight ratio is over one, meaning that the engine produces more thrust (191 kN!) than the weight of the aircraft. In other words, it is able to speed up while flyi
I'm sitting in the commons. Enjoying my Friday morning, of course. But suddenly, I am awakened to the thought of physics. Not actual physics, but a deadline! I needed to finish my blog posts! And now I sit, with two other helpless Physics C students, as we plow through some blogs.
As I sit, inactive, I burn about 100 calories per hour. Which, suprisingly, is not too bad. So I'm actually excercising.
If you just sit, however, you burn a suprising 65 calories per hour - the energy it t
The average aircraft will usually suck up a couple thousand feet in order to stop. The average single piston engine aircraft will take less, and a 747 will take much more (>5000ft).
This creates a problem. Aircraft have insane amounts of momentum upon touchdown, and pavement isn't cheap. In addition, we can't have "mobile" airports for military use - so how are we able to deploy combat ready aircraft to anywhere in the world within a matter of hours?
Well, we made mobile airports. And,
Physics is super fun. You do stuff and work on problems and find out stuff about the real world and how it works. It's pretty cool.
I like physics a lot. Yay we're having so much fun all day every day in physics class. Partying partying yeah. Fun fun fun fun lookin forward to the weekend! (because I get to do physics). I got a feeling (woohoo) that tonight's gonna be a good night. You know why? Because I'll be doing physics tonight. And every day of my life. BECAUSE PHYSICS = LIFE. FOREALZ.
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