A person plugs a power cord into an electrical outlet in the wall. The power cord is covered in black rubber .Which statement is an accurate description of the materials? Electrons would easily move through the person if there was no rubber around the wire

Electrons would not move through the wire if there was no rubber around the wire

Electrons easily move through the rubber around the wire

Electrons move through air when the cord is a few inches from the outlet

Ms. sullivan's class is designing a miniature roller coaster. after first setting it up, they find that it didn't have enough speed to go through the loop de loop. instead of taking out the loop, they decide to increase the height of the first hill the coaster goes down, and this adds the speed needed to make it through the loop. what would be a drawback to this plan in real life? a) no one likes loop de loops. b) there is no downside to this plan. c) a higher hill means a scarier ride. d) a higher hill takes more time and material to build.