Physics homework: 1) What is density bottle? What are the significances of it? 2) Write step by step procedure to find density of a substance using density bottle. 3) What is relative density? What is the SI unit of it?
Answers
Answer:
1) Density bottle : The density bottle is a glass bottle with a round glass stopper at its neck that has a fine hole in it It is used to determine the density of a liquid.
2)Density (ρ) = Mass (m)/Volume (V)
Take the buoyancy of the air into account for weighing. Note: Calibrated density bottles have a unique identification number on all component parts. Only use parts with the same number together.
3)kg/m3
The density is defined as the mass of the body per unit volume. The S.I unit of density is kg/m3. The relative density is defined as the ratio of the substance to the ratio of the reference substance. The unit on both numerator and denominator are the same.
Answer:
1)Density bottle : The density bottle is a glass bottle with a round glass stopper at its neck that has a fine hole in it It is used to determine the density of a liquid.
2)Fill the density bottle with liquid, avoiding bubbles. The ground neck should be covered to about 1/3. In a thermostatic bath, adjust the temperature of the bottle and contents to 20 °C. Align the stopper respectively, the thermometer of the density bottle according to the marking, and insert carefully.
3)The S.I unit of density is kg/m3. The relative density is defined as the ratio of the substance to the ratio of the reference substance. The unit on both numerator and denominator are the same. So relative density is a unitless property.
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