$22m^3 - 19 cm^3 = 2 cm^3 \rightarrow 50 drops = 2 cm^3$
1 drop = ?
1 drop = $\frac{2}{50}cm^3$ = 0.04 cm3
johnmulu answered the question on April 13, 2017 at 07:20
-
Figure 1 shows a measuring cylinder containing some water
(Solved)
Figure 1 shows a measuring cylinder containing some water

Determine the reading on the measuring cylinder, after three drops of water each of volume 0.6 cm3 are added.
Date posted:
April 13, 2017
.
Answers (1)
-
In an experiment to measure the density of a liquid, a student filled a burette with a liquid to the 0 cm 3 mark. Figure 1 shows a section of the burette showing the level of the liquid after 54.5 g of the liquid had been run out
(Solved)
In an experiment to measure the density of a liquid, a student filled a burette with a liquid to the 0 cm 3 mark. Figure 1 shows a section of the burette showing the level of the liquid after 54.5 g of the liquid had been run out

Determine the density of the liquid
Date posted:
April 13, 2017
.
Answers (1)
-
Figure 1 shows the reading on a burette after 55 drops of a liquid have been used.
(Solved)
Figure 1 shows the reading on a burette after 55 drops of a liquid have been used.

If the initial reading was at zero mark, determine the volume of one drop.
Date posted:
April 13, 2017
.
Answers (1)
-
Figure 1 shows a burette partly filed with a liquid. The burette was initially full to the mark 0. If the quantity of the liquid removed has a mass of 22 g, determine the density of the liquid
(Solved)
Figure 1 shows a burette partly filed with a liquid. The burette was initially full to the mark 0. If the quantity of the liquid removed has a mass of 22 g, determine the density of the liquid

Date posted:
April 13, 2017
.
Answers (1)
-
Fig. 1 shows a measuring cylinder, which contains water initially at level A. A solid of mass 11 g is immersed in the water, the level rises to B.
(Solved)
Fig. 1 shows a measuring cylinder, which contains water initially at level A. A solid of mass 11 g is immersed in the water, the level rises to B.

Determine the density of the solid. (Give your answer to 1 decimal point)
Date posted:
April 13, 2017
.
Answers (1)
-
In an X-ray tube it is observed that the intensity of X-rays increases when potential difference across the filament is increased.
(Solved)
In an X-ray tube it is observed that the intensity of X-rays increases when potential difference across the filament is increased. Explain this observation
Date posted:
February 20, 2017
.
Answers (1)
-
State the differences between hard X-ray and soft X-rays
(Solved)
State the differences between hard X-ray and soft X-rays.
Date posted:
February 20, 2017
.
Answers (1)
-
State and explain the effect of increasing the E.H.T in an X-ray tube on the X-rays produced.
(Solved)
State and explain the effect of increasing the E.H.T in an X-ray tube on the X-rays produced.
Date posted:
February 20, 2017
.
Answers (1)
-
Name two differences between cathode rays and electromagnetic radiations.
(Solved)
Name two differences between cathode rays and electromagnetic radiations.
Date posted:
February 20, 2017
.
Answers (1)
-
State two differences between the cathode ray tube (CRT) of a T.V. and the cathode ray oscilloscope (CRO).
(Solved)
State two differences between the cathode ray tube (CRT) of a T.V. and the cathode ray oscilloscope (CRO).
Date posted:
February 20, 2017
.
Answers (1)
-
A block of glass of mass 250 g floats in mercury. What volume of glass lies under the surface of the mercury? (Density of mercury is 13.6 x 103Kgm-3)
(Solved)
A block of glass of mass 250 g floats in mercury. What volume of glass lies under the surface of the mercury? (Density of mercury is 13.6 x 103Kgm-3)
Date posted:
February 18, 2017
.
Answers (1)
-
A block of wood weighing 2.0 N is held under water by a string attached to the bottom of a container. The tension in the string is 0.5 N
(Solved)
A block of wood weighing 2.0 N is held under water by a string attached to the bottom of a container. The tension in the string is 0.5 N. Determine the density of the wood.
Date posted:
February 18, 2017
.
Answers (1)
-
A solid copper sphere will sink in water while a hollow copper sphere of the same mass may float.
(Solved)
A solid copper sphere will sink in water while a hollow copper sphere of the same mass may float. Explain this observation.
Date posted:
February 18, 2017
.
Answers (1)
-
A long horizontal capillary tube of uniform bore sealed at one end contains dry air trapped by a drop of mercury. The length of the air column is 142 mm at 17oC.
(Solved)
A long horizontal capillary tube of uniform bore sealed at one end contains dry air trapped by a drop of mercury. The length of the air column is 142 mm at 17oC. Determine the length of the air column at 25oC.
Date posted:
February 18, 2017
.
Answers (1)
-
In verifying the pressure law of gases, the temperature and pressure of a gas are varied at constant volume.
(Solved)
In verifying the pressure law of gases, the temperature and pressure of a gas are varied at constant volume. State the condition necessary for the law to hold.
Date posted:
February 18, 2017
.
Answers (1)
-
State why it is necessary to leave an air space in a closed glass bottle of water when it is to be kept in a refrigerator
(Solved)
State why it is necessary to leave an air space in a closed glass bottle of water when it is to be kept in a refrigerator.
Date posted:
February 18, 2017
.
Answers (1)
-
State two factors that affect the boiling point of a liquid.
(Solved)
Name two factors that affect the boiling point of a liquid.
Date posted:
February 18, 2017
.
Answers (1)
-
Water is known to boil at 100oC. A student heated some water and noticed that it boiled at 101oC. State two possible reasons for this observation.
(Solved)
Water is known to boil at 100oC. A student heated some water and noticed that it boiled at 101oC. State two possible reasons for this observation.
Date posted:
February 18, 2017
.
Answers (1)
-
Explain why a drop of methylated spirit on the back of the hand feels colder than a drop of water at the same temperature.
(Solved)
Explain why a drop of methylated spirit on the back of the hand feels colder than a drop of water at the same temperature.
Date posted:
February 15, 2017
.
Answers (1)
-
Water of mass 3 kg, at a temperature of 90oC is allowed to cool for 10 minutes. state two factors that determine the final temperature.
(Solved)
Water of mass 3 kg, at a temperature of 90oC is allowed to cool for 10 minutes. State two factors, other than humidity, that determine the final temperature.
Date posted:
February 15, 2017
.
Answers (1)