pressure

Question 1

What is pressure? Equation? Units?

Answer 1

a measure of force per unit area. P=F/A. Pa n/m^2 atm.

Question 2

What is density? Equation? Units?

Answer 2

compactness. rho = m/V. kg/m^3

Question 3

pressure at depth

Answer 3

P=F/A=weight of water/area = rhoVg/A = rhoAhg/A = rhohg

Question 4

Boyle’s Law

Answer 4

P = k/V
k is constant for the gas
P1V1 = P2V2
pressure is proportional to 1/volume

Question 5

Pressure Law

Answer 5

P=kT
Pressure proportional to temperature in kelvin
P1/T1=P2/T2

Question 6

Charles’s Law

Answer 6

V=kT
volume proportional to temperature in kelvin
V1/T1 = V2/T2

Question 7

3 combined pressure laws

Answer 7

P1V1/T1 = P2V2/T2

Question 8

What is temperature

Answer 8

The average kinetic energy of particles in a substance. high temp = high kinetic energy.

Question 9

kelvin to celsius

Answer 9

K-273 = C

Question 10

why does pressure in a balloon exist
what does temperature do

Answer 10

gas particles collide with the walls of the balloon exerting a force on the area of the walls of the balloon.
temperature increases the kinetic energy of the gas particles so pressure increases as the force exerted is greater.