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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.
a body travelling with uniform acceleration crosses two points A &B with velocities 30m/s & 50m/s the speed of the body at mid point of A&B is approximately?
Does sunlight reflected off a mirror enhance the temperature of the sun-rays? A standard planar mirror will not enhance the energy contained in the rays that reflect off it. In
The dielectric strength of transformer oil should be (A) 100 V. (B) 5 KV. (C) 30 KV. (D) 132 KV. Ans: The dielectric strength of transformer oil mu
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Evaluate the volume of the bubble A diver releases an air bubble of volume 2.7cm 3 from a depth of 17 below the surface of a lake, where the temperature is 8.0°C. What is the v
The shear force of a cantilever beam of length L carrying a uniformaly distributed load W Per unit length is how much at fixed end
One of the practical aspects of the Engineering Profession includes the design of industrial equipment. Design could be described as a creative, iterative and sometimes open-ended
explain briefly voltaic cell
Motion of an object in a plane is called two dimensional (2-D) motions. For 2-D motion acceleration or velocity can be explained by two elements in any two mutually perpendicular d
Examples of unlike parallel forces
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