21. A steam engine Tansioms
A heat energy into sound energy
B. electrical energy into sound energy
C heat energy into mechanical energ
D. mechanical energy into heat energ
A heat energy into sound energy
B. electrical energy into sound energy
C heat energy into mechanical energ
D. mechanical energy into heat energ
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Answer:
D. Mechanical energy into heat energy
Explanation:
Steam engine, machine using steam power to perform mechanical work through the agency of heat.