A submarine is blocked at a depth of 150 m below sea level (average salinity 3%, therefore salt water density = 1030 kg / m3):
a) calculate the pressure that the water exerts on the submarine
b) calculate the force that the pistons must exert on a 80 cm diameter door in order to open it.

HELP me

1) sections 1, 2, and 10 are significant primarily because they suggest the likelihood that a) widow wycherly is actually the woman in the full-length portrait. b) dr. heidegger wants to include his guests in an experiment with the water. c) dr. heidegger plans to drink some of the water from the vase and needs witnesses. d) the guests will be asked to witness dr. heidegger's transformation when he drinks the water.

How do we measure or think of speed in the united states?

Heterogeneous mixture with larger particles that never settle is