A pressure gauge 7 m above the bottom of a tank reads 65 kPa. Another at 4m above the bottom reads 87 kPa. What is the density of the fluid

Why is metal often used for cooking pan?

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

This is the number of complete movements of a wave per second.