ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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2020-02-05 09:28:33 | 1 | Physical Chemistry 3
Maxwell
Apply maxwell distribution equation for shoert and high wave length Read more

2020-02-03 00:14:42 | 1 | Physical Chemistry 3
Energy density
DEFFERNTIATE BETWEEN THE RELATIONS OF RAYLEIGH- JEANS LAW AND PLANCK DISTRIBUTION FOR ENERGY DENSITY? Read more

2020-02-03 00:10:23 | 1 | Physical Chemistry 3
The failure of classical mechanics
LIST STATES OF THE FAILURE OF CLASSICAL MECHANICS? Read more

2020-02-03 00:08:56 | 1 | Physical Chemistry 3
Difficulties with the Classical mechanics theory
DICUSS DIFFICULTIES WITH THE CLASSICAL MECHANICS THEORY? Read more

2020-02-02 14:40:11 | 0 | Selected topics in physical chemistry
Nuclear and chemical reactions
Defferentiate between Chemical and Nuclear Reactions? Read more

2020-02-02 14:22:31 | 0 | Selected topics in physical chemistry
Binding energy
What is the binding energy of 60Ni? The mass of a 60Ni atom is 59.9308 amu. The mass of an electron is 9.10939 x 10-31 kg and 1 amu is 1.66054 x 10-27 kg. (Z = 28) Read more

2019-12-09 09:26:06 | 0 | Physical Chemistry 3
wavelength
Calculate the wavelength (in nm) of a photon emitted by a hydrogen atom when its electron drops from the _n_ = 5 state to the _n_ = 3 state. Read more

2019-12-09 07:08:22 | 0 | Physical Chemistry 3
uncertainty
Suppose the speed of a projectile of mass 1.0 g is known to within 1 μms-1. _Calculate the minimum uncertainty in its position. _ Estimate Δp from mΔv, where Δv is the uncertainty in the speed Read more

2019-12-09 07:06:51 | 2 | Physical Chemistry 3
work function
GIVEN THAT THE WORK FUNCTION FOR SODIUM METAL IS 1.82 EV, WHAT IS THE THRESHOLD FREQUENCY? Read more

2019-12-09 07:05:43 | 1 | Physical Chemistry 3
de Broglie wavelength
_Estimate the wavelength of electrons that have been accelerated from rest through a potential difference of 40 kV_ Read more