# physics

posted by Alice

The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure(atm)due to the ocean at a depth of 10.1 km, assuming sea water density is constant all the way down. (The validity of the assumption of constant density is examined in one of the integrated concept problems.)

1. Damon

well you have to make some assumption about what that density is.
so its weight is about 9.81 * 10^3 Newtons/m^3
but salt water is about 1027 kg/m^3
so 10074 N/m^3
so at the bottom the pressure is
10.1 * 10^3 * 10074 = 10.2*10^7 N/m^2 or Pascals
an atmosphere is 1.013*10^5 Pascals
so we have
(10.2/1.013)* 10^2 = 10.1*10^2 = 1010 atmospheres (plus 1 atm for the air on top.)

## Similar Questions

1. ### physics, physics, physics!!!!!

At a depth of 10.9 km, the Challlenger deep in the Marianas Trench of the Pacific Ocean is the deepest site in any ocean. In 1960, Donald Walsh and Jacques Piccard reached the challenger deep in the bathy scaph trieste. Assuming that …
2. ### Physics

Can you please show all your work so that I can understand how the problem is solved?
3. ### physics

The deepest section of ocean in the world is the Mariana Trench, located in the Pacific Ocean. Here the ocean floor is as low as 10,918m below the surface. If the index of refraction of water is 1.33, how long would it take a laser …
4. ### college physics

The deepest section of ocean in the world is the Mariana Trench, located in the Pacific Ocean. Here, the ocean floor is as low as 10,918m below the surface. If the index of refraction of water is 1.33, how long would it take a laser …
5. ### physics

The deepest place in the ocean is the Marianas Trench in the western Pacific Ocean, which is over 11.0 km deep. On January 23, 1960, the research sub Trieste went to a depth of 10.915 km, nearly to the bottom of the trench. This still …
6. ### physics

Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its …
7. ### physics

Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its …
8. ### math

The deepest part of the Pacific Ocean is Marianas Trenchwith a depth of 10,911 meters,The deepest part od the Alantic Ocean is the Puerto Rico Trench with a depth of 8,648 meters Whatn is the difference in elevation of the two trenches?
9. ### math

1.Mark makes Php 40.00 per hour if he works 40 hours or less.If works overtime,he makes an additional Php 5.00 per hour as overtime pay.What would be his total pay if he worked 58 hours?
10. ### physics

The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure due to the ocean at a depth of 10.1 km, assuming sea water …

More Similar Questions