For which object would a geologist use carbon-14 dating to determine age? a. The bones of animals
b. Rocks older than 50,000 years old
c. Types of Sedimentary rocks
d. Parts of Volcanic rock

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