Explain why magnesium and aluminium are good conductors of electricity. Also, find the perimeter and area of a triangle with sides 10 cm and 8 cm.

Haya hapa majibu ya maswali yako:

3.

• a) Explain why the metals magnesium and aluminium are good conductors of electricity. Metals like magnesium and aluminium have a delocalized sea of electrons. These electrons are free to move throughout the metallic structure. When a voltage is applied, these free electrons can easily flow, constituting an electric current, making them good conductors.

4. Perimeter and Area of a Triangle

Step 1: Find the length of the third side.
Let the three sides of the triangle be $s_1$, $s_2$, and $s_3$.
Given $s_1 = 10 \text{ cm}$, $s_2 = 8 \text{ cm}$, and