Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Rutherford Experiment In 1911, Rutherford and his colleagues performed an experiment using thin gold foil and a beam of alpha particles. One of the observations was that some alpha particles scattered back from the foil towards the source. i) Describe Rutherford's model of the atom. ii) How does this model explain the experimental observation that some of the alpha particles are scattered back from the foil? iii) Describe two problems associated with electron orbits in Rutherford's model that were overcome by Bohr's quantized orbits concept. 7/8/2017 1 Lasers A pulsed laser emits light in a series of short pulses, each having a duration of 25.0 ms. The average power of each pulse is 5.00 mW, and the wavelength of the light is 633 nm. Find: a) the energy of each pulse b) the number of photons in each pulse. 7/8/2017 2 Binding Energy • What is the equation for the binding energy of 14-carbon? • State the steps used in calculating the binding energy per nucleon?