What happens to both atomic number and mass number during alpha beta and gamma decay?

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

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?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block