Physics: Density and Pressure

What is the equation to calculate density?

p = m / V (Density = mass / volume)

What are the measures (symbols?) for density?

kg/m^3 or g/cm^3

How do you find the volume of a irregular solid?

Use the displacement of water from before adding an object and then after. (Volume after - volume before)

What is the parallax error and how do we avoid it?

A perceived shift in an object’s position as it is viewed from different angles.

To avoid, make sure all readings at eye level, in line with the scale.

What is the equation to calculate pressure?

p = F / A (Pressure = Force / Area).

What are the measures (symbols?) for pressure?

N / m^2 (Pascals, Pa)

What is the atmospheric pressure?

100,000 Pa

What is the equation to calculate pressure in fluids (gas and/or liquids).

p = h x p x g (pressure = height/depth x density x gravitational field strength)

What is precision?

How close the measured values are to each other.

What is accuracy?

How close the measured values are to the true value.