two objects of inertias M1 and M2 start from rest and then interact with each other (assume neither is interacting with any other object ). (a) what is the ratio of their X components of velocity at any instant? (b) what is the ratio of their kinetic energies at any instant?​

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories