Physics
A transformer

Is used to decrease or increase AC voltage
Converts electrical energy into mechanical energy
Converts DC to AC
Converts AC voltage to D.C. voltage

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Physics
Which statement best describes an igneous intrusion?

Magma explodes to the surface and forms a smooth outer layer of rock
Igneous intrusion for when ice crystals splash into lava
Magma is exported to an open area and forms iron
Magma is injected into surrounding rock forming an igneous intrusive

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