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Vacuum Pumps
Brand Name:
Fountain Solar Energy weak light Water Pump G-Y-D-003Without shaft brush
9V 360MA283*180*52mm
Submersible
ATTINY13 nc
&Fountain Solar Energy weak light Water Pump G-Y-D-003
Art.NO.&&&&&&&&&&GY-D-003Brand NameNOSNPlace of OriginChina (Mainland)TheorySolar powered pumpPowerSolar poweredFuelSolar EnergyApplicationSubmersibleUsageWaterStructurewater pumpArt.Size(cm)283*180*52mmQTY/CTN(pcs)20pcsCarton Size(cm)60*39.7*29cmSolar panel 9V 360MAControllerATTINY13 ncVoltage9V 3WElectric current 210MAHead of delivery150CM Rate of flow300L/H Art.weight0.57kgWater PumpWithout shaft brushless motorUnit Price(USD)NegotiableMOQ(pcs)100pcs
Product performance:
&&& Start: The water pump will not working without sunlight, It will restart within three seconds once the sunlight re-appear.
&&& Useful life period&&&& 20000Hours
&&& Workking hours in sunny: 8: 00 AM~5: 00PM
Product Details
1. The energy is supplied by solar panels, The stronger the sunshine is, The more water can be pumped, It is workable even in the cloudy or hazy day.
2. High reliability, non-rotatable engine,low water flow, can overcome the problem of sand absorption of normal submersible water pump.
3. No need profssional maintenance, It can be dry operated for several hours without damage.
4. The diameter is very small, 8.0cm diameter of well is enough for use, therefore, It saves the cost of well.
&Mr. Jacky Li
Tel: 86-579-
Fax: 86-579-
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Online Inc. All Rights Reserved.0.57KG是多少斤_百度知道
0.57KG是多少斤
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0.57*2=1.14斤
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出门在外也不愁一个实心铅球的质量是4kg,经测量它的体积是0.57×10-3m3,这个铅球是用纯铅制成的吗?已知ρ铅=11.3×103kg/m3）_百度作业帮
一个实心铅球的质量是4kg,经测量它的体积是0.57×10-3m3,这个铅球是用纯铅制成的吗?已知ρ铅=11.3×103kg/m3）
已知ρ铅=11.3×103kg/m3）
正确解答如下：p球 = m球 = 4kg ≈7.01×10的3次方kg/m³—— ——————v球 0.57×10-3m3∵7.01×10的3次方kg/m³＜11.3×103kg/m3∴这个实心铅球不是由纯铅制成的.
思路：先根据题目中所给的质量与体积求出这个铅球的密度，再将这个数值与铅的密度值作比较，即可得出结论。
4除以(0.57*10负三次方差不多是7*10三次方,小于铅球密度,不是
由p=m/v得v=m/p所以v=4÷11.3×10三次方/m的三次方=0.35乘以10的负三次方 所以这不是用纯铅制成的60万吨煤制烯烃项目可研2(1)_百度文库
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