Question

question 7 of 25
many cell phones vibrate when they receive a call. what energy transformation is happening to make the phone vibrate?
a. light energy to chemical energy
b. electrical energy to light energy
c. thermal energy to elastic energy
d. electrical energy to kinetic energy

Explanation:

Step1: Understand energy transformation

Cell - phones use electrical energy from the battery. When they vibrate, this electrical energy is converted into kinetic energy (the energy of motion).

Step2: Analyze each option

• Option A: Light energy to chemical energy is not relevant to vibration.
• Option B: Electrical energy to light energy is for screen illumination, not vibration.
• Option C: Thermal energy to elastic energy is not the case for vibration.
• Option D: Electrical energy to kinetic energy is correct as vibration is a form of kinetic energy (movement) powered by electrical energy.

Answer:

D. Electrical energy to kinetic energy