HW for sure, in detail, thanks Q1 1. Prove 760 mm mercury is 1 atmosphere (Torricelli's experiment). 2. What would be th

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HW for sure, in detail, thanks
Q1
1. Prove 760 mm mercury is 1 atmosphere (Torricelli's
experiment).
2. What would be the buoyant force on 6 kg of lead if it was in
sea water of density 1025 kg/m³. Hint, the density of lead is
11,300 kg/m³
3. (a) When 20 kg/sec of water moves through a fire hose of
diameter 8 cm, how fast is it moving?
A about 4 m/s
B about 8 m/s
C about 2 m/s
D about 16 m/s
(b) If the diameter of the hose changed from 8 cm to 2 cm,
by how much would the speed change?
A it wouldn't change
B 2 times
C 4 times
D SQRT 2 times
E 1/2 times
F 8 times
G 16 times