A submarine is blocked at a depth of 150 m below sea level (average salinity 3%, therefore salt water density = 1030 kg / m3):
a) calculate the pressure that the water exerts on the submarine
b) calculate the force that the pistons must exert on a 80 cm diameter door in order to open it.
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Physics, 22.06.2019 15:30
Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.
Answers: 1
Physics, 22.06.2019 19:50
State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory
Answers: 1
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