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Questions and Answers
What is the primary cause of the warmth produced when water is stirred vigorously in a mixer?
What is the primary cause of the warmth produced when water is stirred vigorously in a mixer?
- Conversion of heat energy into mechanical energy
- Conversion of mechanical energy of the stirrer into heat (correct)
- Conversion of heat into kinetic energy of the water
- Conversion of kinetic energy of the water into heat
What happens to the mechanical energy of the hammer when a nail is hammered into a log of wood?
What happens to the mechanical energy of the hammer when a nail is hammered into a log of wood?
- It gets stored as potential energy
- It gets converted into kinetic energy
- It gets converted into heat (correct)
- It remains constant
In scooters, buses, and cars, what form of energy is converted into mechanical energy by the engine?
In scooters, buses, and cars, what form of energy is converted into mechanical energy by the engine?
- Potential energy
- Heat energy (correct)
- Electrical energy
- Kinetic energy
What sensation does heat cause according to the passage?
What sensation does heat cause according to the passage?
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