Asolid disk of mass 2 kg and radius 2 m is given a horizontal push of 20n at a point .3 m above its center. a. what is the minimum μs between the disk and the floor to allow rolling without slipping?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell