Answer:
A
Explanation:
bcuz the water in it is little
Answer:
Volume = 10 cm3
Density = 2.3g/cm3
Explanation:
volume:
30ml - 20ml = 10ml = 10cm3
density:
density = mass/volume
23/10
2.3g/cm3
Density is determined by dividing the MASS of a sample by the VOLUME of the sample.
Parallax is a deceptive change of the position of an object which is observed while the position of the observer changes. Position of eye at all volumetric vessels must be at the same level as the meniscus. If not, the parallax will cause an error while reading the position of the meniscus of a liquid in a burette.
Cathode-ray tubes are often found in oscilloscopes and computer monitors. In the figure below an electron with an initial speed of 5.70 106 m/s is projected along the axis midway between the deflection plates of a cathode-ray tube.