Science geek brain teasers
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Chris Maunder wrote:
constant graviational field,
That doesn't exist, since gravitation is always centered around something, unless there would be an inifinite flat disk of matter.
Wout
The field on the surface of a sphere centered around a spherical object has constant force.
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
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Wrong. The engines are moving it forward but the belt is moving it backwards at the same speed. As a result its net velocity is zero meaning the wings aren't generating lift so it stays put. The only way it could get aloft is if it's a helicopter/vtol/or it's a windy day and the AC is an ultralight with a takeoff velocity lower than the wind speed. Edit: ooops.
3x12=36 2x12=24 1x12=12 0x12=18
modified on Tuesday, May 4, 2010 3:53 PM
No, the airplane will move forward and eventually take of regardless the conveyer belt, because his wheels have nothing to do with the airplane movement.
The narrow specialist in the broad sense of the word is a complete idiot in the narrow sense of the word. Advertise here – minimum three posts per day are guaranteed.
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The field on the surface of a sphere centered around a spherical object has constant force.
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
Now you're changing the puzzle, sneaky. Could be a cube too, or an egg, or a turtle.
Wout
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Indeed. And I can sing most of the songs from Schoolhouse Rock, too. My earliest clear memory is the Apollo 11 landing: it was launched four days after my second birthday. Yes, I'm old ;P
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Ok, suppose it would be constant, then you could not orbit. An orbit implies that the gravitational field is circular!
Wout
I never agreed with the orbit argument. Anyway the orbit implies a radial field. :)
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles] -
Here's a simple one. A scientist is measuring the temperature of a substance, but the label for the units on the thermometer has worn off. At what temperature, would it not matter if it was in Celsius or Fahrenheit?
modified on Tuesday, May 4, 2010 3:34 PM
At whatever temperature if we don't care about... :-D
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles] -
Here's a simple one. A scientist is measuring the temperature of a substance, but the label for the units on the thermometer has worn off. At what temperature, would it not matter if it was in Celsius or Fahrenheit?
modified on Tuesday, May 4, 2010 3:34 PM
Minus forty?
The narrow specialist in the broad sense of the word is a complete idiot in the narrow sense of the word. Advertise here – minimum three posts per day are guaranteed.
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That belt is only trying to move it backwards though, and the airplane is not connected to the belt, so while the wheels will spin faster than normally, why would anything out of the ordinary happen? (from the airplanes point of view, he just needs a very high ground-speed to get some decent air-speed)
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Minus forty?
The narrow specialist in the broad sense of the word is a complete idiot in the narrow sense of the word. Advertise here – minimum three posts per day are guaranteed.
*Ding* Correct.
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I was thinking that there's enough geeks here - maths, computing, physics, you name it - that we could easily put together a bunch of questions that are answerable by most, but a little tricky. I'll start the ball rolling: Q. In a constant graviational field, how can you accelerate while keeping a steady speed? Hmm - just found braingle.com[^]. There goes a productive day...
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
They aren't science geek questions, but are probably close enough ;) Q. Assuming a system which uses physical addressing mode (no virtual address space of any sort) and operates in Virtual 8086 mode, what would be the result of writing to a null pointer? Q. Where in physical memory can the RSDP be located?
OSDev :)
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No, the airplane will move forward and eventually take of regardless the conveyer belt, because his wheels have nothing to do with the airplane movement.
The narrow specialist in the broad sense of the word is a complete idiot in the narrow sense of the word. Advertise here – minimum three posts per day are guaranteed.
Well.... thats not strictly true. They are stopping the bottom of the plane scraping on the ground, which would increase the friction coefficient quite a bit I'd imagine ;P
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Q. What alcohol and in what quantities will bring Mick to a stand still?
Michael Martin Australia "I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
Double.MaxValue?
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Here's a simple one. A scientist is measuring the temperature of a substance, but the label for the units on the thermometer has worn off. At what temperature, would it not matter if it was in Celsius or Fahrenheit?
modified on Tuesday, May 4, 2010 3:34 PM
-40 degrees is the same for F and C
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I was thinking that there's enough geeks here - maths, computing, physics, you name it - that we could easily put together a bunch of questions that are answerable by most, but a little tricky. I'll start the ball rolling: Q. In a constant graviational field, how can you accelerate while keeping a steady speed? Hmm - just found braingle.com[^]. There goes a productive day...
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
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I was thinking that there's enough geeks here - maths, computing, physics, you name it - that we could easily put together a bunch of questions that are answerable by most, but a little tricky. I'll start the ball rolling: Q. In a constant graviational field, how can you accelerate while keeping a steady speed? Hmm - just found braingle.com[^]. There goes a productive day...
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
Knowing that the distance from Earth to the center of the galaxy is approximately 2.5704*E17 km, is it possible to travel to the center of the galaxy during a lifetime at the speed of light? If it is, how long would it take?
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Bah, too easy... This site is full of geeks... Everyone should know this already... Circular orbit = Constantly accelerating toward the center of the circle, causing speed to remain constant (Only direction changes). Now, if you said constant VELOCITY, then there would be no answer :)
Proud to have finally moved to the A-Ark. Which one are you in?
Author of the Guardians Saga (Sci-Fi/Fantasy novels)personnally i would have said : "run around in circles" ;-)
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I was thinking that there's enough geeks here - maths, computing, physics, you name it - that we could easily put together a bunch of questions that are answerable by most, but a little tricky. I'll start the ball rolling: Q. In a constant graviational field, how can you accelerate while keeping a steady speed? Hmm - just found braingle.com[^]. There goes a productive day...
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
Here's one that I don't personally have an answer to, but which has had me wondering for years. Why is the speed of light limited to 186,000 miles/second. Why this particular speed - what is the determining factor, and why can't the speed of light be exceeded?
With knowledge comes responsibilty; just think of splitting the atom as an obvious example.
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The classic that is far too easy to google for now. If you have an aircraft on a conveyor belt. The air craft attempts to take off and the conveyor belt runs in the opposite direction matching the speed of the air craft. Does the plane take off?
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I was thinking that there's enough geeks here - maths, computing, physics, you name it - that we could easily put together a bunch of questions that are answerable by most, but a little tricky. I'll start the ball rolling: Q. In a constant graviational field, how can you accelerate while keeping a steady speed? Hmm - just found braingle.com[^]. There goes a productive day...
cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP
Travel in a circle. Speed is distance per unit time (e.g. miles per hour). Acceleration is a change in speed OR direction. Traveling in a circle requires a constant change in direction hence a constant acceleration. I used the short explanation so as not to become too boring.
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Yes always switch... probability of winning has just doubled after what host has done... :cool: