Physics
A voltaic cell converts chemical energy to

Light energy
Heat energy
Mechanical energy
Electrical energy

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Physics
Which statement best describes an igneous intrusion?

Magma is injected into surrounding rock forming an igneous intrusive
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

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