Question

How does pressure change as the depth below the surface of a fluid increases

Answer 1

do you think pressure increases or decreases as depth below the surface increases?

Answer 2

um decreases

Answer 3

keep in mind, when an object is at the surface, there's no fluid above it so no fluid pressure, but as the object keeps going further and further down it experiences more and more pressure from the fluid above it

so pressure increases as depth below increases

Answer 4

that's really all you need to say for this problem, you could also mention p = (rho)*g*h where h is the height of fluid above the object, but the pressure vs depth relationship is the important part

Answer 5

hat is the mathematical equation for the total pressure below the surface of a fluid that has air above it? Identify each variable.

Answer 6

x

Answer 7

i'm not 100% sure on this but I believe it would be P = (rho)* g * h where rho is the density, g is the gravitational constant, h is the height between the surface of the fluid and the height at which we are measuring

Answer 8

Yeah i did a quick google search and that is what came up

Answer 9

any ideas/guesses so far? this is mostly just memorization/fact based

Answer 10

the F/A = F/A would be pascals not bernoulli

pressure is same throughout enclosed fluid is pascal

Answer 11

everything else is ok

Answer 12

A force of 3300 N is exerted on a piston that has an area of 0.060 m2. What force is exerted on a second piston that has an area of 0.18 m^2

Answer 13

F/A = F/A

3300/0.06 = F/0.18 solve for F

Answer 14

9900N

Answer 15

good

Answer 16

c. Describe an object that floats in water and an object that sinks in water in terms of their respective densities, as well as in terms of the relationship between each one's weight and buoyant force

Answer 17

a ship?

Answer 18

good, since "whether an object floats" is dependent on density (which is related to weight/mass but not the same thing) a ship will float b/c it's less dense than water, opposite would be true for a sinking object like a rock

Answer 19

in terms of weight/buoyant force, if buoyant force > weight, object floats on surface, if buoyant force = weight, object floats but inside the fluid not the surface, if buoyant force < weight object sinks

Answer 20

that's pretty much the jist of it