Water flows through a horizontal tapered pipe. At the wide end its speed is 4/0 ms/ The difference in pressure between the two ends i 4/5 x 10^3 Pa/ TH speed of hte water at he narrow end is:

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.?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Why does gravity have a lesser than grater effect on higher altitudes?