It would be nice if someone HELPED. During an experiment, you observe that two charged balloons repel each other. When you bring a charged plastic pipe in between the two charged balloons, both balloons are repelled from the pipe. What is the best conclusion statement about the balloons and pipe, based on the observations? They are oppositely charged, which is why they repel each other.
They are similarly charged, which is why they repel each other.
The balloons transferred charge to the pipe, making the pipe repel the balloons.
They must be different colors, which is why they repel each other.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes. which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature. sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

The fact that the total amount of energy in a system remains constant is a(n)