Instructions: 1. Why does a hot air balloon float even though it is so heavy? Hot air balloons float because the buoyancy force of the hot air is more that the weight. Buoyancy occurs because the hot air has a lower density than the cooler outside air. This lower density air weighs less than the air it replaces and that difference is the buoyancy. 2. What makes balloons float when they are full of air but not float when they are deflated? Balloons float when they are full of hot air
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tanks to raise density and allow the submarine to sink and it also pumped out to reduce density and hence allow the submarine to float. The tanks can be filled with water and air‚ which allows the submarine to sink or rise in the water. When a submarine is floating‚ its ballast tanks are filled with air‚ which makes it less dense than the sea water it displaces hence allowing it to float. Submarines sink when water is let into the ballast tank. This is because the submarine’s density becomes greater
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PERMEABILITY HOMEWORK Problem 1: Assume a vertical cylindrical core filled with water. The length of the core is 1 feet and its radius is 1/12 ft. Water density is 62.428 lb-mass/ft3 and water viscosity is 1 cp. We wish to inject additional water into the bottom of the core and flow water from bottom to top through the core where the top of the core is exposed to the atmosphere‚ i..e.‚ the pressure at the top of the core is 14.7 psi. What is the minimum pressure required at the bottom of the core
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experiment is all about buoyancy and density. Buoyancy describes whether objects float or sink. Usually describes how things float or sink in different gasses. Density deals with the amount of mass an object has. Adding salt to the water adjusted the water. Squeeze the bottle hard enough‚ putting pressure to the packet. This causes the bubbles to get smaller and the entire packet to become more dense. Objective: The objective of this experiment is to find the density and buoyancy which is an upward
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Principle: Cyclone desander is based on the principles of centrifugal sedimentation and density difference‚ when the water under a certain pressure from desanding into the equipment by the inlet to tangential‚ it will come about a strong rotation‚ due to the different density of sand and water‚ under the common action of the centrifugal force‚ centripetal force‚ buoyancy and fluid drag force‚ make the low density water rising‚ and expel from the outlet‚ the dense sand will be discharge outlet from
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INDIAN PORT SECTOR Cargo pressure continues at major ports with iron ore and containers the main laggards; resumption of iron ore exports due to possible regulatory changes could be positive for the ports ICRA RESEARCH SERVICES Corporate Ratings Contacts: RATING FEATURE ICRA K. Ravichandran +91 44 4596 4301 ravichandran@icraindia.com Ankit Patel +91 79 4027 1562 ankit.patel@icraindia.com Mathew K. Eranat +91 44 4596 4309 mathew.eranat@icraindia.com October 2013 Key Developments
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distinguished French chemist‚ created a relatively simple method for determining the molecular mass of a volatile substance. In this experiment we will use a modified version of his technique to determine the molecular mass of an unknown volatile liquid. The density of a gas is given by the ideal-gas equation as‚ Dgas = m PM = V RT where M is the molecular mass of the gas. Solving for molecular mass‚ we obtain: € M= mRT PV Thus‚ the molecular mass of a gas can be determined by measuring the
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Fundamental of Engineering Calculation 1. Determine the following unit conversions to SI units: a. Density value of 60 lbft3 to kgm3‚ Ans: 961.1 kg/m3 b. Energy value of 1.7 ×103Btu to kJ‚ Ans: 1.8 x 103 kJ c. Enthalpy value of 2475 BtulbtokJkg‚ Ans: 5756 kJ/kg d. Pressure value of 14.69 psig to kPa‚ Ans: 201.88 kPa e. Viscosity value of 20 cp to Pa∙s‚ Ans: 2 x 10-2 Pa∙s Table of Conversion Factor 1 lb | 0.454 kg |
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MECHANICAL PROPERTIES OF FLUIDS 1 Torricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m-3. Determine the height of the wine column for normal atmospheric pressure. 2 A vertical off-shore structure is built to withstand a maximum stress of 109 Pa. Is the structure suitable for putting up on top of an oil well in the ocean? Take the depth of the ocean to be roughly 3 km‚ and ignore ocean currents. 3 A hydraulic automobile lift is designed to lift cars with
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Purpose: The purpose of the pipet calibration is to determine the accuracy and precision of 10ml of water at room temperature by using a 10ml volumetric pipet. Also‚ analyzing the analytical balance and the density of water from literature reference. Experimental: Description of glassware‚ equipments‚ and materials: 10 ml volumetric pipet (+0.02ml) Computer program: Excel oven (1) 50 ml beaker Thermometer desiccator (1) 250 ml beaker
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