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* Contrôles Continus - P2 - Promo 2029
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Le circuit de la figure ci-dessous représente :
Le circuit de la figure ci-dessous représente :
Pour qu’une bascule JK réalise la transition 1-> 0 sur sa sortie Q après un front actif de son horloge, il faut que ses entrées soient :
Une bascule JK configurée avec fonctionne exclusivement en mode :
A JK flip-flop configured with operates exclusively in the mode
X-rays with a wavelength of 0.024 nm are scattered when they pass through a block of carbon. The wavelength of the scattered photon is 24.567 pm. Calculate the scattering angle and the kinetic energy of the electron after the elastic collision.
Data
:
1 eV = 1.6×10
-19 J ; h = 6.626×10-34J.s ; c = 3×10
8m/s ;
m
0 = 9.109×10-31kg ; e =
1.6×10
-19 C(Tick the right answer,
3 pts , 4 minutes)Consider photoemission caused by ultraviolet light with a wavelength of 207 nm on a metal surface. The stopping potential module is 2 V. Determine the extraction work in eV, the maximum velocity of the ejected electrons, and the photoelectric threshold wavelength.
Data
:
1 eV = 1.6×10
-19 J ; h = 6.626×10-34J.s ; c = 3×10
8m/s ;
m
e = 9.109×10-31kg ; e =
1.6×10
-19 C(Tick the right answer,
5 pts , 6 minutes)The peak radiation of the filament of an incandescent light bulb is at 1449 nm. What is the temperature of the filament of this bulb ?
(Tick
the right answer,
1 pt, 2 minutes)Le pic du rayonnement du filament d’une ampoule à incandescence est situé à 1449 nm. Quelle est la température du filament de cette ampoule ?
(Cochez la bonne réponse,
1 pt, 2 minutes)