What is most widely accepted prediction for the future of the universe? a. the universe will stop expanding and collapse. b. the universe will end in a big bang. c. the universe will stop expanding but will not collapse d. the universe will continue expanding forever

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?