Physics
Which statement best describes an igneous intrusion?

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

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Physics
Circuit breaker usually operate under

Steady state of short-circuit current
Transient state of short-circuit current
After D. C. component has ceased
Sub-transient state of short-circuit current

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