When dry wheat grains are ground inside a flour mill, the freshly ground flour feels warm when collected.…
When dry wheat grains are ground inside a flour mill, the freshly ground flour feels warm when collected. What causes this rise in temperature?
- Creation of new thermal energy from nothing
- Friction converts mechanical energy into heat energy
- Light energy inside the mill absorbs temperature
- Wheat grains naturally release chemical potential energy
Solution
The mechanical energy used to grind the grains encounters friction, converting part of the kinetic energy into heat energy.
Asked in: Homi Bhabha Practice
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