(i) O cm – trough and crest interference
(ii) +10 – crest and crest interference
maurice.mutuku answered the question on August 22, 2019 at 12:26
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(iv) 
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Determine;
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Determine:
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(i) Mark on the diagram the correct position and direction of the load to be lifted.
(ii) Name the principle on which this machine works.
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(i) Determine the mass of lead shots in the test – tube (Take density of water = 1000kgm-3)
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