Julie and Ashwin were doing an experiment in the classroom. They each had to move a 15 kg box. Julie was able to move
her box, but Ashwin was only able to move his after removing
half the items in the box. Which is true regarding the force he
applies after removing the items from the box?

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.