Mercury possess high cohesive forces between its molecules than adhesive forces thus not wetting the glass unlike water which has more adhesive forces between its molecules than cohesive forces.
Osanariel answered the question on May 25, 2018 at 00:21
-
Describe how to fit an iron tyre in a wheel of a train
(Solved)
Describe how to fit an iron tyre in a wheel of a train.
Date posted:
May 10, 2018
.
Answers (1)
-
Describe how you can measure the diameter of a tennis ball
(Solved)
Describe how you can measure the diameter of a tennis ball.
Date posted:
May 10, 2018
.
Answers (1)
-
List applications of expansion in gases
(Solved)
List applications of expansion in gases.
Date posted:
April 28, 2018
.
Answers (1)
-
A stop watch started 0.50 sec after the start button was pressed. The time recorded using the stopwatch for a ball bearing failing through a...
(Solved)
A stop watch started 0.50 sec after the start button was pressed. The time recorded using the stopwatch for a ball bearing failing through a liquid was 2.53 sec. Determine the time of fail?
Date posted:
April 26, 2018
.
Answers (1)
-
50 drops of oil have a volume of 1.0 cubic cm. If a drop of oil forms an oil patch of diameter 20cm, determine...
(Solved)
50 drops of oil have a volume of 1.0 cubic cm. If a drop of oil forms an oil patch of diameter 20cm, determine the size of the oil molecule.
Date posted:
April 25, 2018
.
Answers (1)
-
The water level in a burette is 27 cm³. If 88 drops of the bottle and the average volume of drop is 0.25cm³.What is the...
(Solved)
The water level in a burette is 27 cm³. If 88 drops of the bottle and the average volume of drop is 0.25cm³.What is the final water level in the burette?
Date posted:
April 25, 2018
.
Answers (1)
-
Describe an experiment to find the density of a solid using a density bottle
(Solved)
Describe an experiment to find the density of a solid using a density bottle
Date posted:
April 25, 2018
.
Answers (1)
-
State two ways of increasing pressure in solids
(Solved)
State two ways of increasing pressure in solids.
Date posted:
April 25, 2018
.
Answers (1)
-
Explain why ventilations are put near the roof but not near the floor
(Solved)
Explain why ventilations are put near the roof but not near the floor
Date posted:
April 24, 2018
.
Answers (1)
-
A butcher has a beam balance and masses 0.8 kg and 3 kg. How would he measure 2.2 kg of meat on the balance at once?
(Solved)
A butcher has a beam balance and masses 0.8 kg and 3 kg. How would he measure 2.2 kg of meat on the balance at once?
Date posted:
April 24, 2018
.
Answers (1)
-
A car battery has 12V. 8 dry cells are equal to 12V. Explain why 8 dry cells are not able to start a car?
(Solved)
A car battery has 12V. 8 dry cells are equal to 12V. Explain why 8 dry cells are not able to start a car?
Date posted:
April 24, 2018
.
Answers (1)
-
Given that a kg of copper contains 10^25 atoms and that density of copper is about 9000kg/m^3,estimate the diameter of the copper atom
(Solved)
Given that a kg of copper contains 10^25 atoms and that density of copper is about 9000kg/m^3,estimate the diameter of the copper atom
Date posted:
April 23, 2018
.
Answers (1)
-
A student observed that in the morning that overhead electrical cable is straight? Explain this observation
(Solved)
A student observed that in the morning that overhead electrical cable is straight? Explain this observation.
Date posted:
April 23, 2018
.
Answers (1)
-
A butcher has a beam balance and only two masses of 3.5kg and 5kg.Explain how he can manage to measure for a customer 1.5kg of...
(Solved)
A butcher has a beam balance and only two masses of 3.5kg and 5kg.Explain how he can manage to measure for a customer 1.5kg of meat at once using only the two masses
Date posted:
April 23, 2018
.
Answers (1)
-
A tin containing 5000cm3 of paint has a Mass of 70kg.a)If the mass of the empty tin,including the lid,is 0.5kg,calculate the density of the paint
(Solved)
A tin containing 5000cm3 of paint has a Mass of 70kg.a)If the mass of the empty tin,including the lid,is 0.5kg,calculate the density of the paint
Date posted:
April 23, 2018
.
Answers (1)
-
Explain how the volatile liquid in a refrigerator is made to vaporize in the cooling compartment and to condense in the cooling fins
(Solved)
Explain how the volatile liquid in a refrigerator is made to vaporize in the cooling compartment and to condense in the cooling fins
Date posted:
April 22, 2018
.
Answers (1)
-
Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3.estimate the diameter of the copper atoms?State...
(Solved)
Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3. Estimate the diameter of the copper atoms?
State the assumption made.
Date posted:
April 19, 2018
.
Answers (1)
-
Describe the methods of magnetizing a magnetic material.
(Solved)
Describe the methods of magnetizing a magnetic material.
Date posted:
April 18, 2018
.
Answers (1)
-
What are the applications of photoelectric effect?
(Solved)
What are the applications of photoelectric effect?
Date posted:
April 12, 2018
.
Answers (1)
-
The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
b. The workfunction of the surface in eV.
c. The minimum...
(Solved)
The threshold wavelength of a photoemissive surface is 0.45µm. calculate:
a. The threshold frequency of the surface.
b. The workfunction of the surface in eV.
c. The minimum speed with which a photoelectron is emitted if the frequency of the radiation is 7.5x1014Hz.
Date posted:
April 12, 2018
.
Answers (1)