A boy throws a cricket ball straight up in the air. At the very top of its flight:

How much simple interest is due on a loan of $120 for two years if the annual rate of interest is 5 ¹/₂ per cent?

The lowest and the highest frequencies a typical young person′s ear can detect are approximately:

Some foods contain flavour enhancers. These food additives:

3x - 4(x + 6) =

A force of 100 N starts to act on a body of mass 20 kg which is initially at rest. After 10 s its velocity will be:

Natural Increase in Population

The natural increase in population for country X in 2006 was

When an element combines with oxygen we get an:

Enzymes catalyse specific reactions by having an active site where the substrate fits.This theory is called:

Three factors that increase the risk of coronary heart disease are:

A loudspeaker emits a steady note.A girl sings a note which is of lower pitch but higher volume. The sound wave she is producing has:

To electrolyse solid lead bromide it must first be heated so that:

In the figure above, the shaded portion represents

The following are all minerals EXCEPT for:

Alcohol can be separated from beer using:

An increase in drawing will result in

Given ƒ : x -> 3x - 1, and g : x -> x², then ƒg(-2) =

The alloy, brass, contains copper and:

-7 - (-3) =