<span>Brass is an <u>alloy</u>. An alloy
is a mixture of elements to form a unique material. Brass is a mixture of copper
and zinc and the percentage of each element depends on the desired material. It
has a higher malleability than bronze or zinc. Meaning that it can be bend
easily into it desired form.</span>
B. Amplitude
It is the maximum distance from the equilibrium point of the pendulum.
Its true hopefully this helps you.
The common formula for work is:
Work = force x displacement
W = F x d