Q:A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for pi . Round your answer to three significant digits.)The tank is a spherical shape has a radius r= 6m and a spout height of h=2m.I really dont know how to start this problem correctly. Any help will be appreciated. Thanks!

The pump will not have to work until the water drains by gravity to the level of the spout. Then, Work = Weight of water * Height of lift Find the distance, d, of the center of mass for the remaining water in the bottom 2 m of the sphere. The height of lift will then be 2m - d. The hardest part is finding the distance d to the center of mass. I don't remember how to do that.

Q:Is the pump head related to the water level of the entrance and outlet? If the water level of the inlet and outlet is on the same level, but higher than the height of the pump, does the pump lift need to be coupled with this height difference?

What's the relationship?! When the inlet level is low, the head is slightly higher than the liquid level!

Q:How do you check water pump on 98 deville haveing overhea?

Get the radiator rodded or replaced. Next time, please post under Chevrolet or GMC. This is a VW only section.

Q:how do u know when u need to replace ur water pump or how do u know when its not working??? thanks

i like the way you said that.h2o pump.well if the water pump isnt working like it should,then it will overheat and the temp.light will come on and also if its leaking anti-freexe,its time to change it.also if the bearing is making a racket,it is time for a new 1.

Q:changed the thermostat. it overheats but cools down a heat bar or two idling at stoplights. i filled up the coolant reservoir when i changed the thermostat, drove it about 2 miles(engine was already up to temp when i started) and it overheated. drove it two miles back going about 35-40 and it never went above normal but was still overheating. checked the reservoir and it was empty. stuffed a hose in it and plugged it up with a towel to force water in to see if it was leaking anywhere, no leaks. while running with the rpms up the top hose is easy to squeeze. makes me think water pump. but if i go over 45 it over heats makes me think clutch fan.

well if it is the water pump you will have a small hole ( tale tale hole ) and it will be leaking water to let you know its out. and clutch fan there will be alot of play i have seen people stop them with there hand but i dont advise it

Q:belt removal mercury cruiser water pump?

The pump bracket pivots that allows the belt to be removed. I've seen a few where the alternator belt is over the top of the water pump belt, so you have to remove it first. Actually a pretty easy job.

Q:How hard is it change a 1993 subaru imprezza water pump

www.okorder /... Difficulty is dependent on how comfortable you are with doing the above.

Q:I have to replace the hot water recirculating pump in my house. It is made in Hungary and the Manufacturer's letters look almost Russian. The only words in English are the spec's (amp draw, voltage, etc.) This house was built in 1998 and the plumber's no longer in business. It looks like it just threads onto a quot;capbut I don't want to start using pipe wrenches and just mangle it (it's very difficult to get to also). Any help would be appreciated. Thanks, Mike

Typically, such pumps come as an assembly with flanges to match the existing pipe. Determine your pipe-size and purchase the entire system to that size. Your plumbing supply will be able to help you match all that. And the difference in cost between just the pump cartridge and the entire system is nominal. Get a good one, by the way. Grundfos and Bell Gosset are amongst the best, TACO comes in pretty well also. Unless you have isolation valves on either side of this pump, you will have to drain the system to do it properly. While you are in there, you have the opportunity to install isolation valves and other sorts of refinements for easing future servicing. Hope this helps.

Q:I was was wondering how to calculate the head flow rate from a water pump. The water pump outputs 2 bar, which means that it will push water up to 20m in height. It also has a throughput of 2000 litres per hour.I want to pump water up to my loft, which is approx 15m above the pump.What will the flow rate be at this height? Is it a linear calculation of percentage of drop from maximum head height multiplied by the flow rate, (eg 5/20 * 2000 = 500 litres per hour?), or is it more complicated than that?

If your pump has more capacity than you need, you can always restrict the discharge and create extra artificial head.

Q:Hi,My problem is of this automatic water pump ,it is disrupt always I don't no why..I also want to knew what is the function of the pressure air tank??? The picture is here:

WHAT does it is disrupt always really MEAN?? OK, that said... pumps such as this work to maintain a pressure with two set points even though the regulator only has one indicated.. The lower set point which as pressure drops, the pump turns on, and the upper set point where when the pressure rises to that point, the pump shuts off. When the pressure drops to the lower set point, it triggers the pump to run. When the pressure rises to the upper set point, the pump turns off. If the set point is 50 pounds, it may turn on at 47 and off at 53, or the window could be smaller and on at 49 and off at 51. The air bladder works as a shock absorber, just as the shocks work in your car to smooth the ride. When the pump turns ON there is a pressure pulse that without the air space, would promptly turn the pump off again. This is called short cycling and will cause your pump to on-off-on-off-on-off rapidly. The solution is to refill the air bladder. People with well pumps instead of city water have this problem frequently as the air bladder loses the bubble and does not work as a spring or shock absorber. I have city water NOW, but I used to use a well (which is still operational if I choose to use it) and I experienced pump short cycling the very first year I bought the house. The thing IS, I was ignorant. I missed the thing about a well and a septic tank that also uses a pump to an above ground drain field. YES. I was STUPID because I had NOT paid attention. NOW, years later, I have learned, the HARD way mind you, how these sanitary systems WORK in real life in RURAL America....