Recent content by Superhawkkodaka

weew thanks!

Estimate the kilowatt pump you would need to pump 450 L/min of liquid water at 20c through a rise in elevation of 100m. Assume the water is pumped adiabatically and with negligible changes changes in temperature and kinetic energy. answer given to us is -7.35kw.. Question.. what formula should...

Homework Statement In position 1, the 0.25kg block is held against the spring, compressing it by 150mm. the block then is released, and the spring fires it up the cylindrical surface. Neglecting friction, find the contact force exerted on the block by the surface in position 2.[/B] 1/2kx^2 -...

so the height (h) i must use is the highest point the slider have made for it(slider) to reach point B so my height h=2(0.08)= 0.16... now i seem to be getting same answer given to us 0.15m.. ok I am just confused.. i know that the slider will reach highest point let's say "h" why did you use...

no velocity is given.. i think sir Quantum Defect suggestion is correct.. i already got the value Sa to solve for uknown b.. just that i think my assumed height (h = 0.08) from point A to B is wrong.. i don't know how to interpret what he said.. i'll just sir Quantum Defect quote : Think about...

i think i got the value for Sa correct me if I am wrong.. i thought h is the vertical distance from pt A to B from my understanding from PE=mgh also.. critical point? I am lost i can't imagine.. why do i need to take account critical point? all i know is that when the slider reaches...

PS. i you mean for my (Sa)? there's no angle given..

Homework Statement i just want everybody to check if my solution is correct.. because I am not confident with this one.. your help would be highly appreciated Question: The 0.31kg mass slides on a frictionless wire that lies in the vertical plane. The ideal spring attached to the mass has a...

conservation of energy equation? i don't know how to get the final temperature.. can you be more specific with equation for conservation of energy? i only know this equation for conservation of energy for open system : Q= ΔH + ΔPE + ΔKE + W i can' simplify tthe equation that i gave to input the...

i for got to add the equation for conservation of energy on open system q=∑(exi adiabatic mean adiabatic means heat transfer is zero (Q=0) i forgot to add the equation for open systems Q= ΔH + ΔPE + ΔKE + W --- in this equation Q, W, & PE is equal to zero.. and ΔH = ΔU + Δ(PV) this...

I can't get a2(exit area) have any ideas guys?

An adiabatic diffuser is employed to decrease the velocity of an airstream from 220 to 30 m/s. The air enters the diffuser at a rate of 8 kg/s with a temperature of 300c and a pressure of 100kpa. Determine the exit area of the diffuser if the exit pressure is 125kpa. Answer is 0.37 m^2 Guys I...