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Which do you think would be the greater health hazard: the release of a radioactive nuclide of Sr or a radioactive nuclide of Xe into the environment? Assume the amount of radioactivity is the same in each case. Explain your answer on the basis of the chemical properties of Sr and Xe. Why are the chemical properties of a radioactive substance important in assessing its potential health hazards?
Compute the ratio of the number of protons anti-parallel to those that are parallel to the field
The ship must unload 1000 metric tons within 5 hours to avoid demurrage charges. Estimate the power required by the pump. Take the pump efficiency as 70%. Physical properties of toluene: density 874 kg/m3, viscosity 0.62 mNm-2 s.
in the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char carbon particles and
Compare MACRS depreciation and straight-line depreciation: based solely on the tax effects, which depreciation method (SL or MACRS) would yield a higher net present value for the project?
The doctor wants to find out the exact time at which the concentration of this antibiotic in the blood peaks in the patient. Determine this time and the concentration of the antibiotic in the blood stream at this time.
A boiler is fired using 200 kg /hr of pure saturated hydrocarbon gas ( Cn Hm ) at atmospheric pressure and 20 oc. The dry analysis of the flue gas which leaves the boiler at atmospheric pressure and 300 oc is CO2 =..
A Hollow steel sphere contains 100 watt electrical filament inside it for heating. The other relevant data are as follows- Internal and external radius of the sphere = 0.24 and 0.32 m respectively.
Calculate the work done in breaking up a drop of petrol of volume 1 cm3 into 109 drops. Surface tension of petrol is given as 26 dynes/cm.
Comment on whether this motor is an induction motor or a synchronous motor.
Determine the synchronous speed in revolutions per minute and the useful torque in new ton meters of a 200-hp, 60-Hz, six-pole synchronous motor operating at its rated full load (1 hp ≅ 746 W).
In the batch preparation of an aqueous solution, the water is first heated to 80 °C in a jacketed, agitated vessel; 1000 Imp. gal. (4545 kg) is heated from 15 °C.
Find the net force experienced by a positive charge q = 2 µC that is placed midway between the two charges.
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