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  1. ...be artificially produced by dissolving mined rock salt or by pumping water into wells drilled into rock salt. Natural brines always...

  2. ...circular cone of base radius 4cm and height 12cm is put into a ollow cylinder with the same base radius and height as the cone... 128Π. Later, some water is pumped out of the cylinder such that the depth of water becomes...

    分類:科學及數學 > 數學 2007年04月14日

  3. ...thumbtack applies more pressure because the point concentrates that force into a smaller area. Pressure is transmitted to solid...

  4. ... landed. The "liquid" waste is sent into space. Vacuum pumps are used to remove gas molecules from a sealed volume...

  5. (1) Actual power used to heat water = 2520 x 0.9 = 2268 W Hence, temp. diff = 2268/(0.02 x 4200) = 27 C (2) Since swimming pool contains much more water than a cup of hot tea, the no. of water particles in swimming pool is much...

  6. 1. Amount of heat needed to melt all ice = 0.05 x (2050 x 15 + 334000) J = 18,238 J Heat provided by water when cooling to 0'C = 0.2 x 4200 x 25 J = 21,000 J Hence, final temperature of mixture = (21000 - 18238)/[(0.2+0.05) x 4200] '...

  7. ...補充: In some cases, the pipette can be replaced by continuously pumping the gas into the limewater with a rubber tube with a dropper at one end.

    分類:科學及數學 > 化學 2007年09月05日

  8. I will answer it in english. Soft drink have gas becuase the producer pump carbon dioxide (二氧化碳) into the drink. Carbon dioxide will ' dissolve ' in the solution and form...

    分類:科學及數學 > 化學 2007年03月30日

  9. 有機會係氣咀內之"蕊"老化, 去零件鋪買過新的, 如有小匙, 可以自己換, 亦可去車軚店求助, 不貴的! 呔尺唔準 - It may lead to a slight vibration or 搶軚 while the car is running. And, the tyres may be depreciated faster than normal . I...

  10. ...the characteristic blood circulatory system. The heart is divided into two halves, each half working as a separate pump . One side of the heart pumps blood to the lungs and back to the...

    分類:科學及數學 > 生物學 2007年08月24日

  1. pump into 相關
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