The surface tension become stronger since the inter-molecular distance is reduced and hence the larger inter-molecular force.
joseph rimiru answered the question on October 28, 2017 at 09:16
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A spring extends by 2cm when a mass of 50g is hanged on it. What force is required to extend it by 2.5cm?
Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (2)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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A student stands at a distance 400m from a wall and claps two pieces of wood. After the first clap the student claps whenever an echo is heard from the wall. Another student starts a stopwatch at the first clap and stops it after the twentieth clap. The stopwatch records a time of 50 seconds. Find the speed of sound.
Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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A negatively charged rod is brought rear the cap of a leaf electroscope. The cap is then earthed momentarily by touching with the finger. Finally the rod is withdrawn. The electroscope is found to be positively charged. Explain how this is acquired
Date posted: October 27, 2017. Answers (1)
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State any one form of energy
b) An electric crane lifts a load of 2000kg through a vertical distance of 3.0m in 6 seconds Determine:
i) The work done
ii) The power developed by the crane
The efficiency of the crane if it is operated by an electric motor rated 12.5kw.
Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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Date posted: October 27, 2017. Answers (1)
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A box made of glass sides contained a mixture of smoke and air. Bright light was shown on it and viewed through a microscope. It is observed that the small bright specks are seen to be moving randomly.
a. What are the bright specks?
b. What cause their movement?
c. If the mixture of smoke and air was cooled, what change or changes would be there in the motion of the specks?
Date posted: October 26, 2017. Answers (1)
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Date posted: October 26, 2017. Answers (1)
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Date posted: October 26, 2017. Answers (1)
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Some pollen grains were placed in water, explain how their motion supports the idea that matter is in continuous state of motion.
Date posted: October 26, 2017. Answers (1)
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A roof of a certain house has a surface area of 40000cm^2. If the atmospheric pressure exerted on the roof is 103000 pa, determine the force on it. (take g=10N/kg)
Date posted: October 26, 2017. Answers (1)
- A water manometer was used to measure the pressure of a gas and its height was found to be 40cm. What would be the height...(Solved)
A water manometer was used to measure the pressure of a gas and its height was found to be 40cm. What would be the height of a manometer whose liquid is glycerine of density 1.26g/cm^3?
Date posted: October 26, 2017. Answers (1)