On a cloudy night, the heat from the ground that had accumulated during the day is not lost to the atmosphere as the clouds behave as insulators. On a clear sky, a lot of heat is lost and thus feel colder.
chrispohmomanyi answered the question on October 1, 2017 at 08:45
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Explain how you can change the weight of an object without changing its mass.
(Solved)
Explain how you can change the weight of an object without changing its mass.
Date posted:
October 1, 2017
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Answers (1)
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State two industrial uses of radioactive substances.
(Solved)
State two industrial uses of radioactive substances.
Date posted:
October 1, 2017
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Answers (1)
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State any two properties of beta radiation
(Solved)
State any two properties of beta radiation
Date posted:
October 1, 2017
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Answers (1)
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State any two practical uses of a capacitor.
(Solved)
State any two practical uses of a capacitor.
Date posted:
October 1, 2017
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Answers (1)
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Explain why vegetables would cook faster in a pressure cooker than when using an ordinary cooking pot.
(Solved)
Explain why vegetables would cook faster in a pressure cooker than when using an ordinary cooking pot.
Date posted:
October 1, 2017
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Answers (1)
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Explain why Nickel-Chromium alloy is suitably used in electric heating elements.
(Solved)
Explain why Nickel-Chromium alloy is suitably used in electric heating elements.
Date posted:
October 1, 2017
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Answers (1)
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State advantages of using mercury other than alcohol as a thermometric liquid.
(Solved)
State advantages of using mercury other than alcohol as a thermometric liquid.
Date posted:
October 1, 2017
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Answers (1)
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Distinguish between diffraction and interference as used in waves.
(Solved)
Distinguish between diffraction and interference as used in waves.
Date posted:
October 1, 2017
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Answers (1)
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Explain why sound waves are not propagated in through vacuum.
(Solved)
Explain why sound waves are not propagated in through vacuum.
Date posted:
October 1, 2017
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Answers (1)
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Describe how you would separate a mixture of graphite and nickel
(Solved)
Describe how you would separate a mixture of graphite and nickel
Date posted:
October 1, 2017
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Answers (1)
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Explain why it is dangerous for a diver to stay for long time under deep water.
(Solved)
Explain why it is dangerous for a diver to stay for long time under deep water.
Date posted:
October 1, 2017
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Answers (1)
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Explain the effect of wavelength and frequency of light as it passes from one medium to another of greater optical density.
(Solved)
Explain the effect of wavelength and frequency of light as it passes from one medium to another of greater optical density.
Date posted:
October 1, 2017
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Answers (1)
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State coulomb's law of electrostatic charges.
(Solved)
State coulomb's law of electrostatic charges.
Date posted:
October 1, 2017
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Answers (1)
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Explain why an object falling from a great height will attain a constant velocity.
(Solved)
Explain why an object falling from a great height will attain a constant velocity.
Date posted:
October 1, 2017
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Answers (1)
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Explain why vaseline is applied on terminals of a lead acid accumulator after cleaning them.
(Solved)
Explain why vaseline is applied on terminals of a lead acid accumulator after cleaning them.
Date posted:
October 1, 2017
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Answers (1)
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Explain why telephone lines are loose on a hot day and tight during a cold day.
(Solved)
Explain why telephone lines are loose on a hot day and tight during a cold day.
Date posted:
October 1, 2017
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Answers (1)
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Explain why farm tractors have wide rear tyres.
(Solved)
Explain why farm tractors have wide rear tyres.
Date posted:
October 1, 2017
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Answers (1)
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Explain how radiations may be used to ensure that containers are filled up with equal amount of content.
(Solved)
Explain how radiations may be used to ensure that containers are filled up with equal amount of content.
Date posted:
October 1, 2017
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Answers (1)
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State two properties that distinguish cathode rays from x-rays.
(Solved)
State two properties that distinguish cathode rays from x-rays.
Date posted:
October 1, 2017
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Answers (1)
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State a substance whose relative density is 1.
(Solved)
State a substance whose relative density is 1.
Date posted:
October 1, 2017
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Answers (1)