Recall that the total pressure of air at sea level is about 1 atm, and that air is 20.9 percent oxygen. What is the partial pressure of oxygen in air? How does it compare to the oxygen in the tank?

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: