One of Albert Einstein's biggest ideas is that space isnt just emptiness, it's an in which all
is embedded

If a balloon is taken outside on a very cold day, what will occur?

What was the first instrument to ever record an earthquake?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg