a.) When placed in a pycnometer, 20 g of salt displaces 7.6 g of kerosene. If the mass density of kerosene is 0.83 g/cm3, find the volume and density of the salt.
a.) When placed in a pycnometer, 20 g of salt displaces 7.6 g of kerosene. If the mass density of kerosene is 0.83 g/cm3, find the volume and density of the salt.
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a.) When placed in a pycnometer, 20 g of salt displaces 7.6 g of kerosene. If the mass density of kerosene is 0.83 g/cm3, find the volume and density of the salt.
b.) When equal masses of two substances are mixed, the resultant density is 2.5 g/cm3. When equal volumes are mixed, the resultant density is 4.5 g/cm3. What are the densities of the two substances?
c.) Water from a spring is carried through a pipe of length 100 m down a hill inclined at 200 to the horizontal. When the pipe is full but water is not flowing, what is the pressure at the lower end of the pipe?
d.) Three children each having a mass of 37.4 kg make a log raft by lashing together logs of diameter 32 cm and length 1.77 m. How many logs will be needed to keep them afloat? Take the density of the wood to be 0.75 X 103 kg/m.
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