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Radiation and Radioactivity
Investigator of radioactivity discovered that certain natural elements, primarily the very heavy ones, have unstable nuclei that disintegrate to emit various rays –alpha (α) ,beta(β) and gamma(γ) rays.
A compound microscope with an objective of 1.0 cm focal length and an eye-piece of 2.0 cm focal length has a tube length of 20 cm. Measure the magnifying power of the microscope, i
Vectors Representing Forces A force can be represented by a vector (drawn as an arrow). The arrow's length is related to the size of the force and the arrow's direction shows y
why is friction necessary
An oil film (n = 1.45) on the surface of a puddle of water on the street is 118 nm thick. What frequency of light would be reflected? 2d= (m+1/2)λ/n oil
Q. The radioactive isotope 84Pa214 undergoes a successive disintegration of two α decays and two β decays. Find the atomic number and the mass number of the resulting isotope.
(a) Show that the total power in a 3-phase, 3-wire system using the two-wattmeter process of measurement is given by the sum of the wattmeter readings. Illustrate a connection diag
What do you mean by nuclear fission? Illustrate liquid drop model of nuclear fission? Difference between nuclear fission and nuclear fusion. State the properties of α, β, γ ra
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 wat
explain diffrent phases of liquid crystal
#questionwhat is dc motor ..
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