What is the largest suspected environmental problem associated with the burning of fossil fuels?

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

What are atoms of the same element with varying number of neutrons