美国大学物理题 HELP!Problem 4.A proton and an electron are far apart at rest.An external agent brings the electron and proton closer together and then holds them at rest.Which statement is correct about the work done by the external agent?A) T
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美国大学物理题 HELP!Problem 4.A proton and an electron are far apart at rest.An external agent brings the electron and proton closer together and then holds them at rest.Which statement is correct about the work done by the external agent?A) T
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