A tennis ball diameter can be measured using a vernier calliper.Open your vernier calliper and place the ball between the jaws.Read the mark just before the zero mark of the vernier scale in the main scale.Then look for the coinciding mark in the vernier scale to the main scale and multiply it with 0.01 to convert to centimetres. Finally add your vernier scale reading to main scale reading.
Mr Erick answered the question on May 16, 2018 at 17:57
-
Briefly describe an experiment to show how the image is formed in a pinhole camera
(Solved)
Briefly describe an experiment to show how the image is formed in a pinhole camera
Date posted:
May 7, 2018
.
Answers (1)
-
List applications of expansion in gases
(Solved)
List applications of expansion in gases.
Date posted:
April 28, 2018
.
Answers (1)
-
Explain how a solar water purifier works
(Solved)
Explain how a solar water purifier works.
Date posted:
April 28, 2018
.
Answers (1)
-
You are provided with a strong bar, a ruler and 10 kg weight. How would you use them to weight a sack of potatoes?
(Solved)
You are provided with a strong bar, a ruler and 10 kg weight. How would you use them to weight a sack of potatoes?
Date posted:
April 27, 2018
.
Answers (1)
-
A girl is shouting in front of the cliff from far away. She hears the echo 0.5 sec later. What is the velocity of sound in air
(Solved)
A girl is shouting in front of the cliff from far away. She hears the echo 0.5 sec later. What is the velocity of sound in air.
Date posted:
April 26, 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)
-
Define the following terms. a. Measurement b. Test c. Evaluation
(Solved)
Define the following terms. a. Measurement b. Test c. Evaluation
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)
-
During a tsunami, a diver swam a depth of 10 cm. Determine the pressure exerted to him by water
(Solved)
During a tsunami, a diver swam a depth of 10 cm. Determine the pressure exerted to him by water.
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)