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* Contrôles Continus - P2 - Promo 2029

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Déterminer le facteur relativiste γ d’un électron

parcourant 25 cm en 2 ns. On donne c = 3×10

8 m/s. 

(Cochez la bonne réponse,

3 pts, 4 minutes)

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The earth rotates in an orbit of radius R around the sun at a constant speed v = 3×104 m/s. 

Determine the distance between the center of the earth and the center of the sun. 

We give the mass of the sun msun = 2.02×1030 kg, the mass of the earth mearth = 6×1024 kg and the gravitational constant G = 6.67×10-11 N.m2.kg-2

(Tick the right answer, 3 pts, 4 minutes)
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La terre tourne sur une

orbite de rayon R autour du soleil avec une vitesse constante v = 3×10

4

m/s. Déterminer la distance entre le centre de la terre et celui du soleil.

On donne la masse du

soleil m

S = 2.02×1030 kg, la masse de la terre mT

=

6×10

24 kg et la constante gravitationnelle G = 6.67×10-11

N.m

2.kg-2.

(Cochez la bonne réponse,

3 pts, 4 minutes)

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(Answer with True or False, 1 pt, 1 minute

In the theory of special relativity, if 2 events take place simultaneously, this does not mean that these 2 events have the same time.
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(Répondre par Vrai ou Faux, 1 pt, 1 minute)

Dans la théorie de la relativité restreinte si 2 événements ont lieu

simultanément, cela ne signifie pas que ces 2 événements ont la même heure.

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(Répondre par Vrai ou Faux, 1 pt, 1 minute)

D’après le principe de la relativité de Einstein, toutes les lois de la

physique sont valables dans tous les référentiels d'inertie.

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(Answer with True or False, 1 pt, 1 minute

According to Einstein's principle of relativity, all the laws of physics are valid in all reference frames of inertia.
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For a relativistic object, the relativistic gamma factor is: 

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Let's consider a queue implemented with type t_queue_tab, a two-index array.

This queue can only be manipulated using the standard enqueue() and dequeue() functions, which are well written.

Reminder: the t_queue_tab type is defined as follows:

#define MAX 30

typedef struct s_queue_tab

{

   int values[MAX];

   int first;

   int last;

} t_queue_tab;

Which of the following are valid states of a queue?

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In a stack, what is the main difference between top() and pop() ?

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