Physics, 11.03.2020 02:28 hannaharsena
A sample of dry sand having a total unit weight of 16.50 kN/m3 and a specific gravity of 2.70 is placed in the rain. During the rain the volume of the sample remains constant but the degree of saturation increases to 40%. Determine the total unit weight and water content of the soil after being in the rain ?
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Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?
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A sample of dry sand having a total unit weight of 16.50 kN/m3 and a specific gravity of 2.70 is pla...
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