WAEC Past Questions and Answers - Page 2819

The correct statement about a ferromagnetic material is:

It has a high susceptibility.

Ferromagnetic materials are characterized by having a high susceptibility, which means they are strongly attracted to magnetic fields. When placed in a magnetic field, ferromagnetic materials become magnetized and can themselves exhibit strong magnetic properties, attracting other magnetic materials. Ferromagnetic materials, such as iron, nickel, and cobalt, are commonly used in the construction of permanent magnets and electromagnets due to their strong response to magnetic fields.

No explanation has been provided for this answer.

According to Newton's third law of motion, the force exerted on the bus by the towing vehicle is of the same magnitude as the force exerted on the towing vehicle by the bus (Statement II). The other statements are not necessarily true.

u = 0, g = 10 $ms^2$, v = 5 m/s, h = ?
From $v^2 = u^2 + 2gh$
⇒ $5^2 = 0^2 + 2 × 10 × h$
25 = 0 + 20h
25 = 20h

Therefore, h = $\frac{25}{20}$ = 1.25m

The instrument used to measure relative humidity is a hygrometer. Relative humidity is the amount of moisture in the air compared to the maximum amount of moisture the air could hold at the same temperature. A hygrometer is a device used for measuring the moisture content in the atmosphere, soil, or confined spaces.