Distinguish between speed and velocity?
atleast 4 point should write​

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

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.

How many atoms of nitrogen are in the chemical formula ni(w on