1.1. State the word definition of density.

1.2. When calculating density both the equation and units are required.  

(i) State the equation for density, defining all the terms used.

[1]

(ii) State the SI units for density and a non-SI unit which is commonly used.

[2]

1.3. For pressure caused by a solid, state  

(i) the definition of pressure

[1]

(ii) the equation for pressure, defining the terms used.

[1]

1.4. Fig. 1.1 shows a measuring cylinder containing a liquid with depth h and cross-sectional area A. 

Using the equations you stated in (b) and (c), show that pressure at a point in the liquid is $\DeltaP= \rho g\Deltah$

Fig. 1.1.