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What is radium used for?
Radium was formerly used in self-luminous paints for nuclear panels, watches, aircraft switches, clocks, and instrument dials. More than 100 former watch dial painters who used their lips to shape the paintbrush died from the radiation from the radium that had become kept in their bones. Soon afterward, the adverse effects of radioactivity became widely known. Radium was still used in dials as late as the 1950s. Although tritium's beta radiation is potentially dangerous if ingested, it has changed radium in these applications.
What do some fiber change the color of light? Actually, all fibers change the color of the light in one technique or other. Because of the physical characteristics of the condu
The I beam weighs 0.6kN/m and supports the load which is P33 kN as shown. The distance from the load to point B is P34 m. Determine the vertical support reactions at A and B. (A
The frames of reference which are themselves accelerating, rotating etc like that Newton's first law of motion becomes invalid in their case can be known as non-inertial frames of
A ski starts from rest and slides down a 20 degree incline 100meters long. (a) if the coefficient of friction is .090, what is the the ski's speed at the base of the incline? (b)if
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The value of G, the universal gravitational constant, was measured experimentally by: a) Newton b) Cavendish c) Copernicus d) Kepler Ans: The value of th
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