Which nucleus would be least likely to undergo radioactive decay?
A. A nucleus whose total mass is less than the sum of the masses of its individual particles
B. A nucleus whose total mass is greater that the sum of the masses of its individual particles
C. A nucleus with a mass that is less that the mass of an iron nucleus
D. A nucleus whose mass is equal to the sum of the masses of its individual particles

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

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.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.