If there is motion, then a force in acting true or false

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.

Which accurately compares concave and convex lenses?

Which sound characteristic is not affected by the relative motion of an object