I‘m not sure how to go on with these questions. any help is appreciated.1. A copper pipe, used for plumbing from the water main to a house, is 3 meters long and has a circular cross-section 3.2 cm in diameter. There is a 2.4 cm diameter hole in the center of the cross-section for the entire length of the rod. What is the volume of copper in the rod in cubic inches? The density of copper is 559 lbm/ft3. What is the mass of the copper pipe in pounds?2. A probe sent to the surface of Mars uncovers a pure platinum disc inscribed with the message, We‘ll be right back (in Martian, of course!). The disc is 3 inches thick and 0.8 meters in diameter. The density of platinum is 21,450 kg/m3. What is the mass of the platinum disc in pounds (lbm)?The Martian acceleration due to gravity is 3.61 m/s2 while Earth‘s gravitational constant is 32.2 ft/s2. What is the Earth weight of the disc in Newtons?
It all depends on how it is built. If it is built to stand up to faster winds and has a deeper keel to keep the vessel more stable on the rough ocean seas, than it can be considered an sea worthy or off-shore ocean going sailboat.
A copper pipe, used for plumbing from the water main to a house, is 3 meters long and has a circular cross-section 3.2 cm in diameter. There is a 2.4 cm diameter hole in the center of the cross-section for the entire length of the rod. What is the volume of copper in the rod in cubic inches? ? what rod? do you mean the volume of copper in the pipe? cylinder V πr?h radius diameter/2 3 m 300 cm Entire volume π(1.6)?(300) inside volume π(1.2)?(300) copper volume is the difference V 300π(1.6?–1.2?) 1056 cm? 1056 cm? x (1in/2,54cm)? 64.4 in? density of copper is 559 lbm/ft? 559 lbm/ft? x 64.4 in? x (1 ft/12in)? 20.8 lb
ecky thrump has a good explanation of the boat, but one of the most important features of an ocean going sailboat is the skipper. a great seaworthy sailboat is very dangerous in the hands of an inexperienced sailor. an experienced sailor can successfully cross oceans in less than ideal sailboats because he/she has the ability to make decisions that keep the sailboat safe regardless of the conditions of the ocean. hope this helps
