Ch 9: Pressure and Pascal's Principle

Question 1

pressure

Answer 1

force per unit area

p = F/A (N/m^2 OR Pa)

p = F cos(angle)/A

Question 2

1 Pa = _ N/m^2

Answer 2

1 N/m^2

Question 3

density

Answer 3

mass per unit volume

a measure of the compactness of matter

rho = m/v kg/m^3

Question 4

what does it mean to have a high density

Answer 4

there is more matter/mass in a given volume

Question 5

pressure at a depth equation

Answer 5

p = rhogh

Question 6

total pressure of a liquid for an open container

Answer 6

p = psubo + rhogh

psubo - pressure applied to the surface of the liquid (open container is atm)

Question 7

1 atm = _____ Pa

Answer 7

1.01x10^5 Pa

Question 8

Pascal’s principle

Answer 8

pressure applied to an enclosed fluid is transmitted wholly to every point in the fluid and to the walls of the container

Question 9

hydraulic force multiplication equation

Answer 9

F(output) = (A(output)/A(input))F(input)

if Ao is larger than Ai then Fo is larger than Fi

Question 10

force is multiplied at the expense of ______

Answer 10

distance

Fo = (xi/xo)Fi

output force is only greater than input force if the input distance is much greater than output distance