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Many of the devices we use every day convert energy from one form to another. Here are a few examples:

• Flashlight — converts chemical energy (stored in the battery) to electrical energy to light the bulb. The bulb converts the electrical energy to electromagnetic or radiant energy.
• Toaster — converts electrical energy into thermal energy.
• Car engine — converts the chemical energy stored in the gasoline into mechanical and thermal energy.
• Radio — converts electrical energy into sound energy.
• Human body — converts chemical energy stored in food into mechanical energy – for a beating heart and moving muscles.