The force of gravity acting upon an object is the objects mass. true or false

Which property of fossils allow scientists to determine the relative rock ages..

Explain why electric current cannot exist if a current doesn't have a voltage source.

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