A faulty barometer reads 72 6cm Hg when the atm... - WAEC Physics 2004 Question
A faulty barometer reads 72.6cm Hg when the atmospheric pressure is 75.0cm Hg. Calculate the atmospheric pressure when the barometer reads 72.0cn Hg
A
79.4cm Hg
B
74.38cm Hg
C
74.2cm Hg
D
69.4cm Hg
correct option: b
At 77cm Hg, A.P = (\frac{75.0 \times 72.0}{72.6} = 74.38)
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