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A plantium-resistance thermometer has a resistance 5 at 00C and 19 at 1000C. Assuming that resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 450C
The linear expansivity of a metal P is twice that of another metal Q. When these materials are heated through the same temperature change, their increase in length is the same. Calculate the ratio of the original length of P to that of Q
Water boils at a lower temperature when heated at the top of a mountain than at sea-level because at the top of the mountain the
The mass of water vapour in a given volume of air is 0.05g at 200C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air
The temperature at which the saturated vapour pressure of a liquid is equal to the external atmospheric pressure is known as its