Apressure gage connected to a tank reads 60 psi at a location where the barometric reading is 29.1 in hg. determine the absolute pressure in the tank. take rhohg = 848.4 lbm/ft3.

513 psi step by step in explanation

Explanation:

First We need to convert the inches to ft using a conversion factor then:

1 in= 0.083ft , so  29.1 in=2.42ft

We use the equation of fluids that is:

P= P, +ρgh

We need to include the conversion of psf to psi

1 psf=0.0069 psi

P= P, +(ρgh*0.0069)

P=60 psi + 848.4 * 32*2.42ft*0.0069

P=513psi

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s