Recent content by ocdocd

Okay, I'm wrong about #2, I don't really know how hovercrafts work.

1. Get a 5 gallon trash bag, deflate it, and tape it behind the fan. Get a stopwatch too. Turn the fan on, start the stopwatch, and see how long it takes the bag to fill. 5gallons / that time gives you the air it moves per unit time. 2. This question is nonsensical because you can't make...

It's quantum mechanics.

Q1. Is static friction between a non-moving object and surface? Or is it specific to velocity components? For example, there's a box sliding along a table. It's moving east at some velocity, and it's not moving at all in the north/west direction. If I push it in the north direction, and...