Question

problem without using electricity, you will make your cell phone speaker louder by designing and building a simple and effective passive speaker amplifier for your cell phone. specifications -amplifier must be no larger than 10\ in any direction.

Explanation:

Step1: Understand sound amplification principle

Sound waves from the phone speaker can be amplified by using a horn - like structure. A funnel - shaped object can collect and direct the sound waves, increasing the sound intensity in a particular direction.

Step2: Select materials

Choose a lightweight and rigid material like cardboard or plastic. Cardboard is easy to cut and shape. For example, you can use an old cardboard box or a plastic funnel.

Step3: Design and build

Cut the material to form a funnel - like shape. The narrow end should fit around the cell - phone speaker. The wide end will disperse the sound. You can use tape or glue to hold the structure together. Ensure that the dimensions of the amplifier do not exceed 10 inches in any direction.

Answer:

Design and build a horn - shaped structure using lightweight and rigid materials like cardboard or plastic, with the narrow end fitting around the cell - phone speaker and the wide end dispersing the sound, while keeping the dimensions within 10 inches in any direction.