Everyday Science Question Answers - Part 4 of 4 76. Question: Why is a new quilt warmer than an old one? Answer: In a new quilt the cotton is not compressed and as such it encloses more air which is bad conductor of heat. Therefore‚ it does not allow heat to pass. 77. Question: Curved rail tracks or curved roads are banked or raised on one side. Why? Answer: Because a fast moving train or vehicle leans inwards while taking turn and the banked or raised track provides required centripetal
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water‚ for example sodium and chloride. ‘Thermo’ comes from the use of heat in the process and ‘haline’ represents table salt‚ also known as halite. Where does it travel? How fast does the Thermohaline travel? The process of the thermohaline circulation is extremely slow moving‚ going at the speed of 10 centimetres per second at the most.
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Focus II: Heat and Cold Therapy Focus Objectives 1. Develop two (2) complete nursing diagnoses related to thermal treatments. Hypothermia related to immersion in cold water as evidenced by muscle rigidity and shivering. (411) Risk for shock related to hypovolemia. (721) Impaired Tissue Integrity related to extremes temperature as evidenced by damage integument. (803) Risk for imbalanced body temperature related to hot environments. (105) 2. Discuss and explain the 4 methods of heat transmission.
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perform an experiment in the labs to determine the heats of combustion of selected alcohols and then to use this information and the gathered data from chemical data sources to determine trends in the longer chain alcohols. The Variables that MUST be controlled throughout the experiment are: • The height from spirit burner nozzle to the base of the water filled beaker • Air drafts around the room must be kept to minimum so as to keep the heat on the base of the beaker a constant Temperature. •
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material in the WTC collapse piles could have come from‚ nor does it give a sound explanation for the unusually persistent heat at Ground Zero. Numerous misleading and misinforming statements are disseminated to conceal this dilemma of the official account. In Part I several sources are compiled relating to the exceptionally high temperatures‚ and/or to the persistent heat at Ground Zero. Most of these sources compiled have a background in science or in engineering. Some sources are statements
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methods: Freezer‚ Refrigerator‚ Ice Cubes‚ and Ice Bath. BACKGROUND INFORMATION All matter is made of atoms and molecules that are constantly in motion. Even in solids‚ the molecules are constantly vibrating. Heat is a measure of the average
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Enthalpy‚ represented by the sign ∆H in kJ/mol‚ is the heat change in a reaction. It shows whether how much heat is released or absorbed during the reaction. If the reaction is endothermic‚ the enthalpy would be positive and if the reaction is exothermic‚ the enthalpy would be negative. During a chemical reaction‚ which consists of breaking and creating bonds‚ heat is either absorbed or released. In this lab‚ the reaction uses the disassociation of an ionic compound ammonium nitrate shown in the
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follow all the risk control methods and conduct the experiment in a very safe condition. The aim of this investigation is to find out more about boil water by using a kettle. For example‚ time taken to boil different volumes of water‚ specific heat of water and power of kettle. Equipment: This picture shows all the equipment that I used to do the experiment including a stop watch‚ a measuring jug and an electric kettle with power between 1850w-2200w. Table 1: Time taken to boil five
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every year in India. It is therefore necessary to conserve cooking energy by every possible means. 1.3 Fuel and their types What is fuel? Any source of heat energy is called fuel. The term “Fuel” includes all combustible substances that combine with oxygen from the atmosphere with the evolution of large amount of heat capable of being economically applied to domestic and industrial purpose. Types of fuel - There are three types of fuels: - 1. Solid fuel- It includes coal‚
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as snow remains bright‚ the sunshine bounces off and is not retained to cause any melting. Two factors other than sunshine which directly spells the demise of snow are air temperatures above freezing and contact with dark material that absorbs the heat of the sun. Early in the spring‚ the air temperatures usually are not significant in the melting process‚ so sunshine by itself does little to deplete the winter’s accumulation of snow. But if you sprinkle some ashes‚ sand or other dark material on
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