The water tank for a block of flats is in the roof space above the tenth floor. The owner of a flat on the ground floor can only
open her tap a tiny amount before the water splashes wildly out of the sink. On the tenth floor, the flat owner has only a trickle of water even when his tap is completely open. Explain these observations in terms of pressure
The Pony Express Chapter 1 At A Nation's Crisis The Pony Express was the first rapid transit and the first fost mail line across the continent from the Missouri River to the Pacific Coast. It was a system by means of which messages were carried swiftly on horseback across the plains and deserts, and over the mountains of the far West It brought the Adontic coost and the Pacific slope ten days nearer to each other. It had a brief existence of only sixteen months and was supplanted by the transcontinental telegraph. Yet it was of the greatest importance in binding the East and West together at a time when overland travel was slow and cumbersome, and when a great national crisis made the rapid communication of news between these sections an imperative necessity. The Pony Express marked the highest development in overland travel prior to the coming of the Pacific railroad, which it preceded nine years. It, in fact, proved the feasibility of a transcontinental road and demonstrated that such a line could be built and operated continuously the year around-a feat that had always been regarded as impossible. The operation of the Pony Express was a supreme achievement of physical endurance on the part of man and his ever faithful companion, the horse. The history of this organization should be a lasting monument to the physical sacrifice of man and beast in an effort to accomplish something worthwhile. Its history should be an enduring tribute to American courage and American organizing genius. Read this line from the Pony Express excerpt It hod a brief existence of only sixteen months and was supplanted by the transcontinental telegraph. Based on the corres, what does the word "supplanted" mean? (5 points) Defeated Joined Replaced Os Oo Unearthed
