How did the concept of an atom envolved​

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

When you turn on a battery-operated device, an electrical circuit is

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.