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Explanation — The melting stage of ice decreases when strain boosts for the reason that when strain is increased, quantity is reduced and the volume of drinking water is lower than ice. So Will probably be simpler to alter the state from good to liquid, and so, the melting position decreases.
The precise heat ability of drinking water is very high. It is about five occasions as large as that of sand. As a result, the heat Electrical power demanded for a similar rise in temperature by a particular mass of water will probably be almost 5 moments than that required by the identical mass of sand.
Write the expression for the heat Electricity Q been given by m kg of a compound of precise heat capability c J kg-1 K-1 when it truly is heated as a result of △t° C.
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At higher altitudes, including hills and mountains, the atmospheric stress is small (lower than 1 atmospheric force), thus at these sites, water boils at temperature reduced than one hundred° C and so it does not supply the needed heat Strength to It really is contents for cooking. As a result, cooking there results in being very difficult and it requires a for much longer time.
The melting stage of naphthalene is 80° C as well as the place temperature is 25°. A sample of liquid naphthalene at 90° is cooled down to space temperature. Draw a temperature-time graph to depict this cooling. Around the graph mark the location which corresponds on the CBSE Class 11 Physics freezing method.
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(b) The heat provided to the material all through It truly is alter of state, would not cause any rise in It can be temperature.
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Heat is The inner Electrical power of molecules constituting the body. It flows from a hot entire body to a cold system when they are retained in touch.