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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.
In forced oscillation of a particle, the amplitude is maximum for a frequency ω1 of the force while the energy is maximum for a frequency ω2 of the force, then what is relations
Basic concepts of electromagnetic spectrum: BASIC CONCEPTS 1. When Sun light falls on a prism, the transmitted light produces a sequence of colours called 'Spectrum'. 2
A cheetah can accelerate from rest to a speed of 27.8 m/s in 5.20 s. The cheetah can carry this speed for 9.70 s before it quickly runs out of energy and stops. What distance does
why wouldn''''t you be electrocuted if you walked under an electric transmission line during a rainstorm?
Q. Illustrate how do you convert from Pascal to torr? Answer:- Converting the Pascal to the torr The pascal is a slighter unit of pressure than the torr and there are 1
Question: In diffraction experimentation monochromatic light which passes through a single slit illuminates a screen. A pattern of fringes seems on the screen. The pattern comp
a sphere is at rest on a wall at a angle of 3,4(slpoe) to the left. it also rest against a vertical wall. we are to find the magnitude of the resultant force at the vertical wall.
METALLIC BOND: When positive metallic ions are surrounded by a sea of negative electrons, the solid being held together by electrostatic forces then it is called metallic
Induced electric currents can be explained using which of the following laws? a) Gauss's Law b) Faraday's Law c) Ohm's Law d) Ampere's Law Ans: Induced e
John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positive direction, what are John and Betty''s speeds?
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