# Search results

1. ### HELP on a spacecraft mission to saturn for the injection velocity

cool thanks got it
2. ### HELP on a spacecraft mission to saturn for the injection velocity

I used the hohmann orbit transfer that's why I have two other velocities
3. ### HELP on a spacecraft mission to saturn for the injection velocity

HELP on a spacecraft mission to saturn for the injection velocity i beg you please Homework Statement on intial approach to Saturn, the spacecraft mass is 3500 kg. To enter orbit around Saturn , the vehicle has a 400N thrust primary propulsion engine, with a specific impulse of 310 sec...
4. ### Thevenin's theorem application. HELP! (this is for an exam in 2 weeks)

Homework Statement question 3 part b ( see attachment) Homework Equations thevenin theorem The Attempt at a Solution the answer should be 10.98v for Vth (thevenin equivalent voltage) all my attempts were unsuccessfull. I found voltages such as 22.2 volts i think I lake...
5. ### Fluid mechanics

Homework Statement fluid is flowing upward through a 1cm diameter pipe at 0.15m/s find the necessary power per unit length to drive the flow through the pipe. Homework Equations tau= (viscosity)dU/dy flux of momentum out - flux of momentum in= forces acting on the CV (tau( downward)...
6. ### Fluids motion HARD!. i attached the file as a PDF check picture from Q4

Homework Statement µ Q.4 An incompressible fluid of density ρ flows steadily through a two-dimensional infinite row of fixed vanes, a few of which are shown below. The vane spacing is a. The velocities V1 and V2 and pressures p1 and p2 are all constant along their respective stations, (1) and...

found it
8. ### Fluid mechanics :fluid in motion

Homework Statement a vertical, 1cm-diameter jet of water impinges upon a bathroom scale such that the latter exhibits a reading of 5 kg. Estimate the volume flow rate of the jet. Homework Equations p=F/A Q(volume flow rate)=U*A(area where the jet of water is applied on) a=pi*r² F=mg...
9. ### Fluid statics seems easy but can't figure it out .

thank you very much for your help I got it now. It is the way I read the question that was wrong. I'll try to be more focused next time. thanks again
10. ### Fluid statics seems easy but can't figure it out .

yeah the question says filled not "fully" filled and the question asks for the weight of the container. However, in this exercice I should find 47.7 kN for it's weight.
11. ### Fluid statics seems easy but can't figure it out .

ok here is what I did but did not get the right answer. mass of water = density of water x volume of water in the tank= 1000(kg/m³)*3.53(m³) =3530 kg note : I did this as if the tank was fully filled with water but it is not. mass of tank= total mass ( tank + water) minus mass of water. you...
12. ### Fluid statics seems easy but can't figure it out .

1. 0.75²*pi*2=3.53m³ 2.mass of water:( 55kN-weight of tank)/9.81 3. total mass of truck+water=55kN/9.81=5606.52 Kg 4.mass of empty tank= 5606.52 Kg-mass of water 5.mass of alcohol= 2785.17 Kg( in a tank full of alcohol) note 2 and 3 are the same equations which leads to 0=0. Moreover, I...
13. ### Fluid statics seems easy but can't figure it out .

tried it with the corrected value of r it still doesn't work ( forgot to tell the answer should be around 47.7kN
14. ### Fluid statics seems easy but can't figure it out .

no because the tank is not fully filled with water unless I know the volume I can't find it
15. ### Fluid statics seems easy but can't figure it out .

Homework Statement A cylindrical tank of internal diameter 1.5m and length 2.0m is mounted on a trailer. When the tank is filled with water the combined weight is 55 kN. Find the weight of tank plus trailer with the tank full of methyl alcohol (relative density 0.789). Homework Equations...