If the apple is stationary in your hand when you begin, and then also stationary 1m away when you are finished, then the exact same amount of work must have been used to accelerate the apple upwards as was used to decelerate the apple (accelerate it in the opposite direction) once it reaches its...
Here's my little bit of help.
At the equator there is no rotational force. That's one way to tell where the equator is.
As for calculations, I think they are best done by using a non-inertial reference frame.
I don't know where the line between "fully understood" and "undiscovered" is drawn. Gyroscopic precession, for example, may be fully described mathematically, and yet I don't recall ever learning what mechanism or property causes it.
Is it enough to just quantify something? Does that...
Imagine a water-wheel turning a mill. The water going into the thing is constant. The frictional load is linear, depending on the speed of the wheel. Now, create some same-sized holes in all of the buckets to allow just a portion of the water to escape as the thing turns.
It might seem...
Lotus Seven for one, but it's not all that unique for the time period. A few years back, some magazine tried to match up a new Lamborghini with some of these period classics and it was pathetic. Except on very, very long straightaways, these little tiny cars tore things up. (Woudn't want to...
I don't think so. Back in the 50's, it seems like there were a few street cars that weighed in the 1200 pound range with around 200 hp. I think some were long stroke motors with massive torque (taxes in Britian were based on bore). They are still really fast cars.
With modern materials...
on edit> I do understand that for this discussion power is a funtion of the three properties; force (torque), distance (revolutions), and time (minutes), and that the dimensions of the units are not all that important.
I also understand that using ft-lbs for units just breeds more...
At 5252 rpm all engines have the same torque (ft-lbs) as horsepower.
:)
P.S. I agree with post #29 from Turbo as an answer to what will get you off the line quickest.
https://www.physicsforums.com/attachment.php?attachmentid=9005&stc=1&d=1170188368
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The Amazon now appears to be entering its second successive year of drought, raising the possibility it could start dying next year. The immense forest contains 90 billion tons of carbon, enough in...
And the difference in Iraq under Bush's rule is what, exactly, oil?
Why not compare Bush's rule in Iraq to Sadam's rule in Iraq?
Yes, tyrants. That's exactly what I was talking about.
I guess I'm just more old fashioned, and a true believer that the filibuster, as practiced in the Senate, is an historical tribute to our freedom of speech, which shall never be curtailed, and it annoys me to hear it referred to as a "procedural maneuver". Symbolism used to be huge in this...
Obama sort of lost me during the Alito confirmation, when he claimed that a filibuster was a “procedural maneuver” that he didn’t agree with, although he was going to vote for it anyways.
Alito was confirmed with 42 votes against him, after the filibuster was defeated (only 41 votes were...