A Perspex container has a 6 cm square base and contains water to a height of 7 cm (Figure 1.13).
a What is the volume of the water?
b A stone is lowered into the water so as to be
completely covered and the water rises to a height of
9 cm. What is the volume of the stone?

a) V = 252 cm³

b) Vs = 72 cm³

Explanation:

a)

The volume of the water can be given by the following formula:

V = 252 cm³

b)

The volume of stone can be given by the change in volume of the water when the stone is dipped into it.

Vs = 72 cm³

truck y has a greater velocity than truck x.

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm