In 28 days the number of radioactive nuclei decreases to
In 2.8 days the number of radioactive nuclei decreases to one-eighth the number present initially. What is the half-life (in days) of the material?
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A circular beam length 36 inches and diameter 1 inch is supported on the left end by a pin joint and the right end with a roller. The beam is under axial tension with forces of 1000 lbs out of each end.
A 30.0 mL sample of 0.30M HClO (aq) is titrated with 0.20 M NaOH (aq). Ka of HClO is 3.5*10^-8. What is the pH of the solution when 5.0 ml more of NaOH is added in the titration.
What are the successful-effort and full-costing methods? What are the effects on balance sheet and income statement?
A saturated solution of magnesium hydroxide in equilibrium with undissolved solid is prepared at 25C. The pH of the solution is 11.03. Calculate the value of the Ksp
In 2.8 days the number of radioactive nuclei decreases to one-eighth the number present initially
Threshold freq. of metal isf0. When the light of freq. 2f0 is incident on the metal max velocity of electrons is v1 and v2
To determine the elevation of a point B from the elevation of a point A, which is 511.6 ft. When the transit was set up over the point A, the height of the transverse axis above that point was 4.92 ft.
a water of 20 c temprature pupped at 75 kpa to a perforated pipe 5 cm dia. contain 10 hole with the same diameter. the distance between two adjacent hole is 20 cm. what is the discharge of each hole
Consider a rectangular loop of wire 6.8cm by 7.8cm in a uniform magnetic field of magnitude 1.4T. What is the average induced emf in the loop
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