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WAEC Physics 2017 Paper

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Question : 7

Total: 50

A body weighing 14N in air is partially immersed in water. If the mass of water displaced in the process is 200g, calculate the upthrust on the body. [g=10

\text{m/s}^2

]

2.0N
3.0N
3.5N
7.0N

Solution:

Upthrust = weight of liquid displaced

= mass of liquid displaced $\times$ acceleration due to gravity

= $\frac{200}{1000} \times 10$

= 2N

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