Pressure and upthrust - SP15 Flashcards
1
Q
what is the density of sea water?
A
1030 kg/m3
2
Q
what force acts on objects in fluid?
A
upthrust
3
Q
what is true about pressure in fluids with greater densities?
A
same volume of fluid above will have a greater weight, hense, greater pressure
4
Q
what is the density of fresh water?
A
1000kg/m3
5
Q
why does upthrust act on objects in fluid?
A
due to the pressure difference above and below them
6
Q
what happens when a object in fluid is heavy?
A
greater need for pressure beneath them to balance weight
7
Q
what is upthrust equal to?
A
displacement of water
