panuto: Sa tulong ng graphic organizer na matatagpuan sa ibaba ng ikat long republika at sa kasa lukuyanikatlong republika suliranin, isyu at hamon kasalukuyan suliranin, isyu at hamon​

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

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)