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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 child rolls a ball up a hill at 3.24 m/s. If the ball experiences an acceleration of 2.32 m/s 2 . How long will it take for the ball to have a velocity of 1.23 m/s down the
The project consists of a word processed (typed) report submitted by the project report due date. Late submissions are penalized 10% of the mark per day, including Saturdays and Su
Why can''t I fly
impure and pure spectrum
Derive First law of thermodynamics When an amount of heat energy is supplied to the system, part of it enhances internal energy of the system and remaining is utilized by the s
what does light does
Here are the positions at three different times for a bee in flight (a bee''s top speed is about 7 m/s). time: 5.4 s 5.8 s 6.2 s position: m m Using the best information
Can you give the graphical comparison among the following three kinds of harmonic motion: i. Under damped harmonic motion ii. Over damped harmonic motion iii. Critically
composition of two simple harmonic motions at right angles to each other and having time periods in the ratio 1:2
Q. In Young's double slit experiment the distance between the slits is 1.9 mm. The distance between the slit and the screen is 1 m. If the bandwidth is 0.35 mm Compute the waveleng
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