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Conservation of mass(equation of continuity)
Conservation of momentum(equation of motion).
Conservation of energy.
Conservation of moment of momentum
lily nekesa answered the question on January 27, 2018 at 14:30
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State the disadvantages of using mirrors as optical instruments?
Date posted: January 26, 2018. Answers (1)
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A body weighs 3.6N in air and 2.4N when fully immersed in water.The density of the body in g/cm^3 is?
Date posted: January 25, 2018. Answers (1)
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A machine with an efficiency of 60% is used to overcome a load of 60N through the application of a force of 40N. Calculate the velocity ratio of the machine
Date posted: January 24, 2018. Answers (1)
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A bubble of soap blown to the wider end of a funnel,When the top is left open the bubbles flatten to a film which rises up the funnel. Explain observation.
Date posted: January 23, 2018. Answers (1)
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Two table tennis balls hang at the same level suspended from a thread a short distance apart. A stream of air is blown between the balls. Explain what happens to the balls.
Date posted: January 23, 2018. Answers (1)
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A beaker containing water was placed on a flat bench.State and explain the changes in stability of the beaker when the water freezes to ice.
Date posted: January 23, 2018. Answers (1)
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Why is a metal cap of a leaf electroscope circular?
Date posted: January 21, 2018. Answers (1)
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State what happens to the molecules of a gas in a sealed container when temperature of the gas is increased.
Date posted: January 20, 2018. Answers (1)
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Give five examples of suspended particulate matter.
Date posted: January 20, 2018. Answers (1)
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List the two categories of suspended particulate matter that causes pollution.
Date posted: January 20, 2018. Answers (1)
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Describe ozone depletion and its effects.
Date posted: January 20, 2018. Answers (1)
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Describe global warming and greenhouse effect in details and state their effects to environment.
Date posted: January 20, 2018. Answers (1)
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While heating water in a beaker, a wire gauze is placed below the beaker. Explain.
Date posted: January 16, 2018. Answers (1)
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Define principal focus of a concave mirror(Solved)
Define principal focus of a concave mirror
Date posted: January 10, 2018. Answers (1)
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How does the distance between the interference fringes and the separation distance of the slits relate?
Date posted: January 8, 2018. Answers (1)
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Can visible light produce interference fringes? Explain
Date posted: January 8, 2018. Answers (1)
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Briefly explain how unpolarized light and plane polarized lights can be distinguished.
Date posted: January 8, 2018. Answers (1)
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A student makes a loud sound and hears the echo of the sound after 2.0s. If the speed of sound in air is 330.5m/s, calculate the distance between the student and the object causing the echo.
Date posted: January 7, 2018. Answers (1)
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What do you understand by the term e.m.f of a cell?
Date posted: January 7, 2018. Answers (1)
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Is it safe to stay in a car during a lightning storm? Explain.
Date posted: January 7, 2018. Answers (1)