11. A U-tube pressure gauge containing water is connected to a gas cylinder. If the difference between the levels of water in the gauge is 20m, find the pressure of the gas in Pa, if the atmospheric pressure at the time of taking the reading is 760mmHg (g=9.8ms).​

c. convergent boundary.

explanation:

v 154.9= 0.9 length length s little over 154.9cm

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.