P11

Question 1

What is the equation to work out pressure

Answer 1

P=force/area

Question 2

Calculate pressure exerted when 400N is applied to an area of 4m squared

Answer 2

100p

Question 3

What are the units for pressure

Answer 3

Pascals

Question 4

What does pressure in water depend on

Answer 4

The amount of liquid above the object

Question 5

How to calculate weight

Answer 5

GravityXMass

Question 6

How to calculate mass with density and volume

Answer 6

DensityXVolume

Question 7

What is the equation for pressure in gases using density gravity and height

Answer 7

DensityXGravityXHeight

Question 8

Calculate the atmospheric pressure with air of height 53 if the average P air=0.86kg/m cubed and gravity=9.8N/Kg

Answer 8

P=pXhXg.0.86X9.8X53=446

Question 9

What is upthrust

Answer 9

It’s the upward force that a fluid exerts on something floating on it

Question 10

When does an object float

Answer 10

When it’s weight is equal or less than the upthrust provided by the fluid

Question 11

How do you calculate area from radius

Answer 11

Pi r squared