what is the measurement of Glass of cold water
Answers
Explanation:
ydhdjkdmeneksjksimsvsm
Explanation:
The temperature of very cold water in a small test tube is measured with a large mercury-in-glass thermometer. The temperature measured is unexpectedly high. What is a reason why this might be the case?
If the thermal mass of the thermometer is high and the thermal mass of the water is low then the thermometers initial temperature can skew the reading because the water will be warmed by the thermometer.
A small test tube will contain a small amount or mass of water - and a glass and metal (mercury is a metal) will have a much larger mass due to the thing being solid. So the thermometer choice will certainly affect the reading.
To get a satisfactory reading the thermometer should be small and the volume of water should be much larger than the volume of water displaced by the thermometer glass. And Keeping the thermometer at a temperature near that expected of the water will help a lot too as it won’t warm the water so much.
Make sure to stir the water with the thermometer, too, so that you won’t get a local temperature gradient at the thermometer.
One of the fundamental rules of measurements is that you must be very careful and aware of the effects of the measuring instrument upon the property being measured.