When a magnet s strongly heated, the dipoles have an increased vibration that cause them to get dis aligned leading to demagnetization
chrispohmomanyi answered the question on October 17, 2017 at 11:59
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What is the angle of deviation
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What is the angle of deviation
Date posted:
October 17, 2017
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Answers (1)
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Define the following terms as used in sound.1. Pitch 2. Intensity
(Solved)
Define the following terms as used in sound.
1. Pitch
2. Intensity
Date posted:
October 17, 2017
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Answers (1)
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State two differences between heat and temperature.
(Solved)
State two differences between heat and temperature.
Date posted:
October 17, 2017
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Answers (1)
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Explain why a nail rubbed with oil penetrates timber easily when hammered than a dry nail.
(Solved)
Explain why a nail rubbed with oil penetrates timber easily when hammered than a dry nail.
Date posted:
October 17, 2017
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Answers (1)
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Name the most suitable instrument for measuring the diameter of a thin wire or strand of hair.
(Solved)
Name the most suitable instrument for measuring the diameter of a thin wire or strand of hair.
Date posted:
October 17, 2017
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Answers (1)
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2000 cm^3 of fresh water of density 1000 cm^3 is mixed with 3200 cm^3 of sea water of density 1025 cm^3. Calculate the density of...
(Solved)
2000 cm^3 of fresh water of density 1000 cm^3 is mixed with 3200 cm^3 of sea water of density 1025 cm^3. Calculate the density of the mixture.
Date posted:
October 16, 2017
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Answers (1)
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The mass of a substance is always constant whether an object is on the moon or the earth or any other planet. Explain.
(Solved)
The mass of a substance is always constant whether an object is on the moon or the earth or any other planet. Explain.
Date posted:
October 16, 2017
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Answers (1)
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The mass of a density bottle is 20 g when empty and 45 g when filled with water. If it is filled with liquid x...
(Solved)
The mass of a density bottle is 20 g when empty and 45 g when filled with water. If it is filled with liquid x its mass is 400 g. Calculate the density of liquid x. (density of water 1.0 g/cm^3)
Date posted:
October 16, 2017
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Answers (1)
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When using a density bottle there are some precautions that should be observed. Mention two of them.
(Solved)
When using a density bottle there are some precautions that should be observed. Mention two of them.
Date posted:
October 16, 2017
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Answers (1)
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A rectangular tank measures 25.0 m long, 10.0 m wide and 2 m high. Calculate the mass of water in the tank when it is...
(Solved)
A rectangular tank measures 25.0 m long, 10.0 m wide and 2 m high. Calculate the mass of water in the tank when it is half full. (Density of water 1000 kg/m^3, assume these measurement are internally taken).
Date posted:
October 16, 2017
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Answers (1)
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The density of mercury is 13.6 g/cm^3. Find the volume of 4000 g of mercury in m^3.
(Solved)
The density of mercury is 13.6 g/cm^3. Find the volume of 4000 g of mercury in m^3.
Date posted:
October 16, 2017
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Answers (1)
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A block of glass in the laboratory was found to be 200 g, and it measured 6 cm, 5 cm, 1 cm. Calculate the density...
(Solved)
A block of glass in the laboratory was found to be 200 g, and it measured 6 cm, 5 cm, 1 cm. Calculate the density in kg/m^3.
Date posted:
October 16, 2017
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Answers (1)
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The density of certain materials was found to be 32.5 g/cm^3. Express this in SI units.
(Solved)
The density of certain materials was found to be 32.5 g/cm^3. Express this in SI units.
Date posted:
October 16, 2017
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Answers (1)
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The density of sea water is found to 1.005 g/cm^3. Express this density in kg/m^3.
(Solved)
The density of sea water is found to 1.005 g/cm^3. Express this density in kg/m^3.
Date posted:
October 16, 2017
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Answers (1)
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State two reasons why lycopodium powder is used in the oil drop experiment.
(Solved)
State two reasons why lycopodium powder is used in the oil drop experiment.
Date posted:
October 16, 2017
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Answers (1)
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At higher temperatures, diffusion of fluids is faster than at lower temperatures. Explain.
(Solved)
At higher temperatures, diffusion of fluids is faster than at lower temperatures. Explain.
Date posted:
October 16, 2017
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Answers (1)
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State two molecular differences between a real gas and ideal gas
(Solved)
State two molecular differences between a real gas and ideal gas
Date posted:
October 16, 2017
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Answers (1)
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Explain why a liquid and not a gas is used as a hydraulic machine fluid
(Solved)
Explain why a liquid and not a gas is used as a hydraulic machine fluid
Date posted:
October 16, 2017
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Answers (1)
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The thermal conductivity of a metal increases with the increase cross-sectional area of the metal. Explain how the cross-section affects conductivity using the electron movement.
(Solved)
The thermal conductivity of a metal increases with the increase cross-sectional area of the metal. Explain how the cross-section affects conductivity using the electron movement.
Date posted:
October 16, 2017
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Answers (1)
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An air bubble expands as it rises to the surface of water in a deep pond. State the cause of this given that the temperature...
(Solved)
An air bubble expands as it rises to the surface of water in a deep pond. State the cause of this given that the temperature remains constant.
Date posted:
October 16, 2017
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Answers (1)