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When a metal is illuminated with radiation with a wavelength of 152 nm, photoelectrons are ejected with a velocity of 7.9 x 105 m/s.
What is the work function, in eV, of the metal?
what the main defination of current? Electrical current is a measure of the amount of electrical charge transferred per unit time. It represents the flow of electrons through a
2. Surface Crystallography and Epitaxy Fe thin films are grown on a single-crystal Al (100) substrate surface. The films grow with no dislocations (if they are thin enough) which
As CPH is a boson, does it has structure? Answer; a CPH is tiny energy and it is not a boson. When a CPH takes spin, then it converts to graviton.
a column of water contains fine metal particles of radius 2*E(-8) m, which are in thermal equillibrium at 298 K. if there are 1000 particles per unit volume at a given height,how m
Q. Describe the parallel force? Answer:- Parallel forces are two or else more forces which perform in parallel. The forces don't have to be in the similar direction howeve
why fall an apple from a tree
Identify the action reaction pairs in the following situations: a. Snowball hits a girl in the back. Snowball pushes girl's back; girl's back pushes on snowball. b. A base
Describe electric current, mobility of charge and drift velocity carriers in a conductor.Derive the relation between drift velocity of charge carriers and electric current in a con
Kinetic and potential energy: Energy can exist in of 2 main forms. Kineti c energy is the kind of energy you probably think of right away when you imagine the energy. A pers
A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma
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