How much power does it take to do 360 J of work in 18 sec?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Which composition of water moves to begin a deepwater current?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?