Roller coaster wheels are designed to prevent the train to the track while it travels through fancy loops and twists. Not A Perfect Circle When you go upside down on a roller coaster, inertia keeps you from falling out. This resistara a change in motion is stronger than gravity. It is what presses your body to the outside of the as the train spins around. Gravity keeps pulling you toward the Earth when you go upside down, but inertia pushes you against the floor of the roller coaster car. This pushing force is stronger than gravity. The loop cannot be a perfect circle, though. If it was, the pushing force would be too strong for safety and comfort. For that reason, roller coaster loops are elliptical. They are shaped like stretched-out circles. America's First Coaster The earliest version of the roller coaster was a Russian sled ride from the 1400s. It was called Russian Mountains. what's the main idea

Are these any instance when you misbehaved online? how do you think should you behave now that you have learned netiquette and proper behaviour on the world wide web?

Which pair of words has similar denotation but different connotations?

Read the excerpt from act 3 of a doll’s house. mrs. linde: you seemed to me to imply that with me you might have been quite another man. krogstad: i am certain of it. mrs. linde: is it too late now? krogstad: christine, are you saying this deliberately? yes, i am sure you are. i see it in your face. have you really the courage, then—? mrs. linde: i want to be a mother to someone, and your children need a mother. we two need each other. nils, i have faith in your real character—i can dare anything together with you. krogstad [grasps her hands]. , , christine! now i shall find a way to clear myself in the eyes of the world. ah, but i forgot— how does the conflict in this passage develop a theme? mrs. linde creates a conflict by promising something she cannot give to krogstad, which develops the theme that empty promises can destroy relationships. krogstad continues the conflict by choosing clearing his name over having a life with mrs. linde, which develops the theme that you must often choose yourself over others. krogstad creates a conflict by deceiving mrs. linde about his intentions, which develops the theme that, in love, actions speak louder than words. mrs. linde resolves the conflict by committing to a new life with krogstad, which develops the theme that new beginnings are always possible.