# Tag Info

39

Simple (Wrong) Analysis Shoes Assuming the coefficient of friction on the ice is approximately the same for the tires and shoes. It would do just as much good to get into the plane as to try to push it. Both would increase the frictional force by at most $\mu\,m\,g$ Having established an upper bound for the effectiveness of pushing we can compare this to ...

8

To add to Rick's answer: Rick is right that it is only the front wheel that is skidding. Most of the weight is over the main wheels (it is essential that the centre of gravity be close to the main wheels, to ensure the plane does not pitch when the wheels strike the ground on landing.) Only a small amount of weight is on the nosewheel. It would seem that ...

2

Thermophoresis A temperature gradient induces a force on small particles due to uneven kinetic energy transfers. This processes is called thermophoresis. The hot plastic will create a strong temperature gradient in the air directly above the plastic, forcing particles away from the plastic and allowing them to be entrained in the convective flow also due to ...

2

Latent Heat Slows Condensing On a micro scale, when a molecule of water condenses out of the air by joining a water droplet it transfers its higher kinetic energy to the droplet warming it. On a macro scale, if all the water tried to condense out of the air at once, the temperature of the cloud would rise to the point where much of the water would want to ...

2

It depends on the TV/Monitor. Cathode Ray Tube The picture for CRT monitors is actually traced out with one beam tracing back and forth over the entire screen. So rather than having a shutter interrupting the entire screen and the entire screen being illuminated normally. There is only a small spot that is illuminated at any given time. The information ...

1

First of all, the effect is totally real. Here is an example YouTube video how it sounds (and a recipe how to fix it): https://www.youtube.com/watch?v=x5ruAZ4Useg I am actually getting much more melodic sounds from the speakers! ;-) And I have heard the same melodic reactions of PC speakers in many people's scientific talks and even in TV programs. ...

Only top voted, non community-wiki answers of a minimum length are eligible