Consultar el nombre de 3 tecnicas de relajacion y describe cada una en 2 parrafos

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Explain why electric current cannot exist if a current doesn't have a voltage source.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply