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40 metres
50
They both have the same mass, however their weight is different. Since the 40 g rock has more density it would have more weight.
2 g/cm3 Because density = mass / volume so u do 40 divided by 20 and get 2
density = mass/volume = 40/20 = 2 g/cc
Water is a liquid at this pressure and temperature.
40 metres
Pressure Nominal 40; 40 bar pressure rating for European flange
30-40 bar peak pressure
.The temperature at boiling point depend up on the vapour pressure. For example water boils at 100 degrees in atmospheric pressure ie, at 1 bar. But same water can boil at 40 degree celcius at -0.9 bar. That is , at reduced pressure a liquid boils at reduced temperature.So the temperature at boiling point depend up on the vapour pressure .
This is only a rough guide as there are factors to take into account such as variations in temperature, atmospheric pressure, altitude, etc. Simply measure the distance vertically in metres from your outlet or tap to the bottom of the tank or to the tanks' outlet then multiply that height by 0.1 until you reach your required BAR pressure. e.g 2 metres x 0.1 = 0.2 bar , 5 metres x 0.1 = 0.5 bar 20 metres x 0.1 = 2.0 bar 50 metres x 0.1 = 5.0 bar. So you will need your tank to be a whopping 40 metres above the tap to create 4 BAR of pressure. 40 metres is actually around 3.923 bar so to be accurate set the height at 40.001 metres to attain a snip over 4.0 bar.
the density of water at 40 degrees C is 0.992g/mL. What is the volume of 2.27g of water at this temperature?
For water 40 mL; for other liquids V = 40/d, where d is the density.
About 40-70 psi.
50
Since water has a density very close to 1 gram per cubic centimeter (it varies depending on temperature but never gets very far from 1 g/cc and is almost exactly 1 g/cc at 4 °C) 40 grams of water would also be 40 cubic centimeters of liquid water.
40-80 psi.