WHich of the following processes can increaseinternal energy of a piece of
metal .
a. striking the piece of metal with a hammer
b. passing electric current through it
c. melting the piece of metal
internal energy
2008-11-15 7:44 pm
回答 (2)
2008-11-16 12:21 am
✔ 最佳答案
All three.The first two processes will increase the temperature of the metal, hence the kinetic and potential energies of the molecules.
The third process will increase the potential energy of molecules.
2008-11-16 5:56 am
internal energy means all energy in a object(K.E and P.E)
a,b,c will all increse the energy of the metal.
Hence,a,b,c are all right!
a,b,c will all increse the energy of the metal.
Hence,a,b,c are all right!
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