Freshwater and seawater flowing in parallel horizontal pipelines. Are connected to each other by a double U-tube manometer, as shown in the figure. Determine the pressure difference
between the two pipelines. Take the density of seawater at that location to be ρ = 1,035 kg/m3
,
density of mercury ρ = 13,600 kg/m3 and density of air ρ = 1.23 kg/m3
. Can the air column be
igonred in the analysis

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i