End Of Module Practice

Question 1

Conversion of cm2 to m2 (1)

Answer 1

10^-4

Question 2

Atmospheric pressure into lb/in^2 (2)

Answer 2

14.7

Question 3

State the equation relating pressure gauge, pressure and atm pressure (1)

Answer 3

P = Pg - Patm

Question 4

State the use of barometer (1)

Answer 4

-A barometer compares the pressure due to the atmosphere to the pressure due to the column of fluid typically mercury

Question 5

State pascals principle (1)

Answer 5

-an external pressure applied to an enclosed fluid is transmitted unchanged from every point within the fluid

F1 = F2(A1/A2)
A2 being the object place
F2 being the force needed to raise the object

Question 6

State the meaning of buoyant force and state its formula (2)

Answer 6

A fluid exerts a net upward force on any object it’s surrounds

F2 -F1 = density x gravity x volume

Question 7

State Archimedes principle (1)

Answer 7

An object completely immersed in a fluid experience an upward buoyant force equal in magnitude to the weight of fluid displaced by the object

Question 8

When does an object float? (1)

Answer 8

And object floats when it displaces an amount of fluid equal to its weight

Question 9

State the formula when an object is floating in a fluid (1)

Answer 9

Volume submerged = volume solid (density of solid / density of fluid)