Potassium, Group 1 calcium, Group 2
iodine, Group 17
neon, Group 18

Which two elements in the list would bond together based on their ionic charges?

(1 point)

potassium and iodine

calcium and potassium

calcium and neon

potassium and neon

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.