Springs
What does stretching and compressing mean?
Stretching comes fron tension force, compressing comes from compression force
What is the unit of pressure
pascal
True or false: The pressure of a liquid depends on the heigth of the liquid.
True
What is the equation of Boyle Law
P1 x V1 = P2 x V2
How do you calculate extension?
Final length - original length
What is the equation to calculate the pressure of a solid?
P=F/A
What is the equation of pressure in a liquid?
P=density x heigth x g
If the pressure doubles, what happens to the volume?
Reduce in half
What is the physical meaning of spring constant?
The force needed to stretch/compress by a unit distance.
True or false, pressure depends on the density of the material.
true
In a manometer, if the liquid is closer to the gas than the open-end, does it mean that the gas pressure is higher or lower than atmosphere?
lower
A gas is compressed from 500pa to 2000pa. The final volume is 2m3. What is the initial volume?
8m3
What is the equation of the force in a spring?
F = K.X
A solid has a base area of 3mx3m and a heigth of 5m. What pressure does it exerts on the ground if its mass is 90kg?
100pa
What is the liquid pressure on Mercury (g=3.7) if the height is 0,7m and the density is 1500kg/m3
3885pa
Which variable is kept constant when using Boyle Law?
Temperature
True or false : If a wire is subject to a plastic deformation, it will follow hooke's law.
False
A solid has a base area of 3mx3m and a heigth of 5m. What pressure does it exerts on the ground if its density is 50kg/m3?
2500pa
Explain how a barometer works
Teacher judgement
Explain how the Boyle Law works in terms of particles
Teacher Judgement