A polar bear appears upside down in the sky due to mirage in very cold climates. When slightly warm air settles over very cold air which is near the ground, the sky reflects images on the ground to produce an upside down image.
QueenR answered the question on April 3, 2018 at 14:12
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A vibrator generates 120 waves in 5 seconds.The distance between successive crests of the waves is 8cm. Determine the time taken by the waves to...
(Solved)
A vibrator generates 120 waves in 5 seconds.The distance between successive crests of the waves is 8cm. Determine the time taken by the waves to travel a distance of 150m.
Date posted:
March 25, 2018
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Answers (1)
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What is mechanical physics?
(Solved)
What is mechanical physics?
Date posted:
March 23, 2018
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Answers (1)
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A machine has an efficiency of 80%.if the machine is required to overcome a load of 60N with a force of 40N. Calculate the velocity ratio?
(Solved)
A machine has an efficiency of 80%.if the machine is required to overcome a load of 60N with a force of 40N. Calculate the velocity ratio?
Date posted:
March 22, 2018
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Answers (1)
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Distinguish between momentum and impulse
(Solved)
Distinguish between momentum and impulse.
Date posted:
March 21, 2018
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Answers (1)
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State and explain two forms of mechanical energy
(Solved)
State two forms of mechanical energy
Date posted:
March 20, 2018
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Answers (1)
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A wave travels at 200m/s through a certain medium. If 40 waves pass a certain point per minute, find their wavelength.
(Solved)
A wave travels at 200m/s through a certain medium. If 40 waves pass a certain point per minute, find their wavelength.
Date posted:
March 18, 2018
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Answers (1)
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State TWO reasons why the earth pin in a three pin plug is longer than the others
(Solved)
State TWO reasons why the earth pin in a three pin plug is longer than the others
Date posted:
March 14, 2018
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Answers (1)
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List operating characteristics of hand- held sediment samplers
(Solved)
List operating characteristics of hand- held sediment samplers.
Date posted:
March 7, 2018
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Answers (1)
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Describe on how to measure the volume of oil drop
(Solved)
Describe on how to measure the volume of oil drop.
Date posted:
March 6, 2018
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Answers (1)
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Describe an experiment on how to measure the thickness of a razor Blade
(Solved)
Describe an experiment on how to measure the thickness of a razor Blade
Date posted:
March 6, 2018
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Answers (1)
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A butcher has a beam balance and masses 0.5kg and 2kg. How would he measure 1.5kg of meat on the balance at once
(Solved)
A butcher has a beam balance and masses 0.5kg and 2kg. How would he measure 1.5kg of meat on the balance at once.
Date posted:
March 5, 2018
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Answers (1)
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Explain the reason somebody in the highland is likely to suffer from a nosebleed
(Solved)
Explain the reason somebody in the highland is likely to suffer from a nosebleed
Date posted:
March 5, 2018
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Answers (1)
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Define the term specific density?
(Solved)
Define the term specific density.
Date posted:
March 4, 2018
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Answers (1)
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State two measurements you would take in an experiment to determine the upthrust of the object
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State two measurements you would take in an experiment to determine the upthrust of the object.
Date posted:
March 3, 2018
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Answers (1)
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State two conditions necessary for formation of annular eclipse
(Solved)
State two conditions necessary for formation of annular eclipse.
Date posted:
March 2, 2018
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Answers (1)
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When a charged leaf electroscope is placed close to an uncharged leaf electroscope, state and explain the results
(Solved)
When a charged leaf electroscope is placed close to an uncharged leaf electroscope, state and explain the results.
Date posted:
March 1, 2018
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Answers (1)
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The density of granite is 2800kg/m3.What is the specific gravity of granite?.
(Solved)
The density of granite is 2800kg/m3.What is the specific gravity of granite?.
Date posted:
February 26, 2018
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Answers (1)
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A block of wood has a volume of 45cm3 and a mass of 450g.What is its density?
(Solved)
A block of wood has a volume of 45cm3 and a mass of 450g. What is its density?
Date posted:
February 26, 2018
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Answers (1)
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What is power and what is its SI units?
(Solved)
What is power and what is its SI units?
Date posted:
February 26, 2018
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Answers (1)
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What is displacement?
(Solved)
What is displacement?
Date posted:
February 26, 2018
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Answers (1)