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Describe experiment to demonstrate the law of flotation
Date posted:
October 16, 2018
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A block of metal of volume 60 cm3 weighs 4.80 N in air. Determine its weight when fully submerged in a liquid of density 1,200 kgm-3.
Date posted:
October 16, 2018
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Describe an experiment to demonstrate Archimedes principle
Date posted:
October 16, 2018
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Explain the common eye defects and their corrections.
Date posted:
October 15, 2018
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Experiment to determine the focal length of a converging lens using the lens formula
Date posted:
October 15, 2018
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The lens of a slide projector focuses on an image of height 1.5m on a screen placed 9.0 m from the projector. If the height of the picture on the slide was 6.5 cm, determine, (a) Distance from the slide (picture) to the lens (b) Focal length of the lens
Date posted:
October 15, 2018
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The focal length of a converging lens is found to be 10 cm. How far should the lens be placed from an illuminated object to obtain an image which is magnified five times on the screen?
Date posted:
October 15, 2018
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An object 0.05 m high is placed 0.15 m in front of a convex lens of focal length 0.1 m. Find by construction, the position, nature and size of the image. What is the magnification?
Date posted:
October 15, 2018
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A girl claps her hands once at a distance 250 m from a vertical cliff. If the temperature in the surrounding is 5oC, how long does it take for her to hear the echo?
Date posted:
October 12, 2018
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A boy strikes a railway line (steel) with a hammer. If the speed of sound in steel is 5,200 m/s, determine the time taken for the sound to reach another boy 2.3 km down the railway line with his ear on the rail.
Date posted:
October 12, 2018
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Two identical springs, whose spring constant is 6.0 N/cm, are used to support a load of 60 N as shown below. Determine the extension of each spring.
Date posted:
October 12, 2018
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A body of 200 g was hung from the lower end of a spring which obeys Hooke’s law. Given that the spring extended by 100 mm, what is the spring constant for this spring?
Date posted:
October 12, 2018
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A load of 4 N causes a certain copper wire to extend by 1.0 mm. Find the load that will cause a 3.2 mm extension on the same wire. (Assume Hooke’s law is obeyed).
Date posted:
October 12, 2018
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A vertical object 5 cm high is placed 10 cm in front of a convex mirror of focal length 15 cm. find the position, size and nature of image formed. Determine the magnification of the image.
Date posted:
October 12, 2018
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Determine the size, position and nature of the image of an object 5.0 cm tall, placed on the principal axis of a concave mirror of focal length 15 cm, at a distance 35 cm from the mirror.
Date posted:
October 12, 2018
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Name the parts of a spherical mirror.
Date posted:
October 12, 2018
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Explain three states of equilibrium with aid of diagrams.
Date posted:
October 12, 2018
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A uniform rod is 1.0 m long weighs 5 N. It is supported horizontally at one end by a spring and the other end rests on a table as shown below. A mass of 2kg is hung from the rod as shown; determine,
a) Reading of the spring balance
b) Reaction force, F, from the table.
Date posted:
October 12, 2018
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A uniform rod of length 1.0 m is hung from a spring balance as shown and balanced in horizontal position by a force of 1.6 N. Determine; (a) The weight of the rod (b) Reading of the spring balance
Date posted:
October 12, 2018
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Study the diagram below and determine the value of X and hence the length of the bar.
Date posted:
October 11, 2018
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The following bar is of negligible weight. Determine the value of ‘x’ if the bar is balanced.
Date posted:
October 11, 2018
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A uniform rod of negligible mass balances when a weight of 3 N is at A, weight of 3 N is at B and a weight of W is at C. What is the value of weight W?
Date posted:
October 11, 2018
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Suppose an oil drop has a volume of 0.10 mm3 and forms a film with a radius of 10 cm. Calculate, the thickness of the oil film.
Date posted:
October 11, 2018
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Explain how to measure length using a micrometer screw gauge
Date posted:
October 11, 2018
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Explain how to measure length using vernier calipers.
Date posted:
October 11, 2018
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Describe the domain theory of magnetism.
Date posted:
October 11, 2018
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Outline ways of caring for magnets.
Date posted:
October 11, 2018
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Describe the methods used to make magnets. Use diagrams where necessary.
Date posted:
October 11, 2018
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Describe an experiment to charge and discharge a simple secondary cell.
Date posted:
October 11, 2018
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Describe and experiment of making a simple cell
Date posted:
October 11, 2018