But by solving an old problem, Boeing created a new one. The new engines were too big to fit in their traditional spot under the wings. To combat the problem, Boeing mounted them forward on the wings. Moving the engine position forward shifted the plane’s center of gravity, which altered...
Why does sound travel slower in cold air than in warm air? Why do objects float in liquids denser than themselves? How does an object's speed affect its aerodynamics? When you dropped the magnet down the pipe, what did you notice? Does the magnet fall as quickly as you would expect?
He hasn't even really had a chance to do anything about the economy. Congress certainly isn't helping. And yet, we're already getting the rhetoric that, oh, look what he did to our really great economy. GLENN: Correct me if I'm wrong here, Carol. But the Biden administration, while...
Then, you need to think about the how, and that’s when design and engineering comes into the mix. I like the Disney term “imagineers.” These are the people who imagine and engineer things, and make those things real. You cannot ship PowerPoints, Excel spreadsheets, and ...
(3)how much did you spend ___ the car? (选项同上) (4)how long does it ___ to get to you home?(同上) 8. asleep:adj. 睡着的 (1)don’t make any noise. the baby is asleep.(=sleeping) (2)fall asleep:入睡,同义词组:get /go to sleep he’s so tired that he ___ soon....
Even worse, Euler knew that there was a whole family of analytical solutions in the form of potential solutions, which did not correspond to observed physical flow. This was coined as d’Alembert’s paradox (video), which turned Euler’s Dream into Euler’s Nightmare. It took 250 years to...
“The genius of customary measure is its highly evolved sophistication in terms of use by hand and eye,” wrote Brand. “Metric works fine on paper (and in school) where it is basically counting, but when you try to cook, carpenter, or shop with it, metric fights your hand....
“I saw a few people I've always admired get on board (Bráulio Amado, Adam Higton, Jiro Bevis). And I went full sheep mode and did the same. I don’t think they know why they are there either.” We have, sadly, seen this pattern before. Over the past few y...
When we press down on a syringe full of air, the pressure increases. Why did it increase when there has been no temperature change? Why do airplanes wings not flap to fly? Answer true or false: A hot air balloon goes up because it is less dense than the air around it. ...
Even though customers did not neces- sarily intend to harm the firm when they tweeted or posted on TikTok (some of them merely wanted to initiate change and discuss the events with a constructive and reparatory, rather than destructive and toxic mental state), their actions still harmed the ...