This is a radioactive element which have the same atomic numbers but different mass numbers that undergoes disintegration to become stable elements.
chrispohmomanyi answered the question on September 27, 2017 at 09:47
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Explain how can a concave mirror be used as a shaving mirror
(Solved)
Explain how can a concave mirror be used as a shaving mirror
Date posted:
September 27, 2017
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Answers (1)
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State the principle of conservation of momentum
(Solved)
State the principle of conservation of momentum
Date posted:
September 27, 2017
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Answers (1)
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State ways of reducing friction between two surfaces
(Solved)
State ways of reducing friction between two surfaces
Date posted:
September 27, 2017
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Answers (1)
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Explain why on a hot day, a dry road may seem to have pools of water when observed from a distance.
(Solved)
Explain why on a hot day, a dry road may seem to have pools of water when observed from a distance.
Date posted:
September 27, 2017
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Answers (1)
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State any three factors on which the resistance of the conductor depends
(Solved)
State any three factors on which the resistance of the conductor depends
Date posted:
September 27, 2017
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Answers (1)
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Explain why one feels colder when walking on a concrete floor than on the carpeted floor.
(Solved)
Explain why one feels colder when walking on a concrete floor than on the carpeted floor.
Date posted:
September 27, 2017
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Answers (1)
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State Faraday’s law of electromagnetic induction.
(Solved)
State Faraday’s law of electromagnetic induction.
Date posted:
September 27, 2017
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Answers (1)
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Explain why the sky appears blue.
(Solved)
Explain why the sky appears blue.
Date posted:
September 27, 2017
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Answers (1)
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Describe how the type of charge on a charged metal rod can be determined.
(Solved)
Describe how the type of charge on a charged metal rod can be determined.
Date posted:
September 27, 2017
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Answers (1)
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Define capacitance
(Solved)
Define capacitance
Date posted:
September 27, 2017
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Answers (1)
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State two conditions that must be met for a conductor to obey Ohm’s law.
(Solved)
State two conditions that must be met for a conductor to obey Ohm’s law.
Date posted:
September 27, 2017
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Answers (1)
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Define an Ohm.
(Solved)
Define an Ohm.
Date posted:
September 27, 2017
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Answers (1)
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Explain why an alkaline battery delivers a larger current than a lead acid accumulator.
(Solved)
Explain why an alkaline battery delivers a larger current than a lead acid accumulator.
Date posted:
September 27, 2017
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Answers (1)
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Explain why the mercury level of a liquid in a glass thermometer falls before rising when put in boiling water.
(Solved)
Explain why the mercury level of a liquid in a glass thermometer falls before rising when put in boiling water.
Date posted:
September 27, 2017
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Answers (1)
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Explain why bright shining tea pot is considered better than one which is dull.
(Solved)
Explain why bright shining tea pot is considered better than one which is dull.
Date posted:
September 27, 2017
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Answers (1)
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State any difference between sound and water waves.
(Solved)
State any difference between sound and water waves.
Date posted:
September 27, 2017
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Answers (1)
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Explain how the rotation of blades at the the top of the helicopter enables it to take off.
(Solved)
Explain how the rotation of blades at the the top of the helicopter enables it to take off.
Date posted:
September 27, 2017
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Answers (1)
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During strong windy day, the roof is likely to be taken off. Explain
(Solved)
During strong windy day, the roof is likely to be taken off. Explain
Date posted:
September 27, 2017
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Answers (1)
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A microscope is focused on a mark on horizontal surface. A rectangular glass block 30mm thick is
place on the mark. The microscope is then adjusted...
(Solved)
A microscope is focused on a mark on horizontal surface. A rectangular glass block 30mm thick is
place on the mark. The microscope is then adjusted dd10mm upwards; to bring the mark back to
focus, determine the refractive index of the glass
Date posted:
September 26, 2017
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Answers (1)
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Explain why a person should crawl close to the floor in a smoke-filled room.
(Solved)
Explain why a person should crawl close to the floor in a smoke-filled room.
Date posted:
September 26, 2017
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Answers (1)