Atomic and Nuclear Physics Answers

A mixture of acetone and water are sent through a distillation column. In one stage of the distillation column, 286 kg/h of a mixture that is 30 mass percent acetone enters and is split into two streams, a liquid and vapor stream. The vapor stream contains 74 mass percent acetone, and the liquid stream contains 18 mass percent acetone.

What is the total flow rate of the liquid stream?

What was the difference between Roentgen rays and x-ray?

given that fuel grade uranium contains 4% fissile material (235U) that the fissile material is completely utilised that 200MeV (1eV=1.6× 10^-19 J) of thermal energy is released during fission of a single 235U nucleus and that the thermal to electrical conversion of efficiency is 33% the annual requirement of fuel grade uranium for round the clock operation of a 1000MW nuclear power plant would be

-State the Bragg’s law mathematically.
-X-rays are incident normally on a crystal lattice constant 0.6 nm. The first order reflection occurs at an angle 300. What is the wavelength of X-rays used?
-Lists four properties of X-rays
-What is an electron volt?
-A metal has a work function 3.0 eV illuminated by light of wavelength 0.6 nm. Calculate the:
threshold frequency
maximum kinetic energy of photo electrons in electron volt
(h = 6.63 x 10-34 Js, c = 3.0 x 108 m/s, e = 1.6 x 10-19 C)
-What is the difference between Compton effect and photoelectric effect?
-The radius of our Sun is 6.96 x 108 m, and its total power output is 3.85 x 1026 W. Assuming the Sun’s surface emits as a black body, calculate:
-its surface temperature
-the maximum wavelength of light from the Sun. ( = Wm-2K-4, c = mK)
-What does Einstein’s special theory of relativity state about the laws of Physics?
-What are radioisotopes?
- State 2 differences between nuclear fission and nuclear fusion.

In hospitals, the radioactive isotope Fluor-18 is often used. This isotope has a half-life of 110 minutes and is mainly a β + radiator.

a) What percentage of the original activity remains after 3.0 hours?

b) How much energy is emitted in the event of a breakdown?

c) How much energy has a preparation fluor-18 given off after 3.0 hours if its original activity was 14 GBq?

Thermal newton scattering in single crystal is employed to