1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nady [450]
3 years ago
5

Quel est le type de rayonnement produit par la radioactivité

Physics
1 answer:
Dmitriy789 [7]3 years ago
8 0

Il existe troi types de rayons produits lors de la désintégration des éléments radioactifs:

-- "particules alpha" . . . noyaux d'hélium, composés chacun de 2 protons et 2 neutrons

-- "rayons bêta" ou "particules bêta" . . . flux d'électrons

-- "rayons gamma" . . . rayonnement électromagnétique avec les longueurs d'onde les plus courtes connues et l'énergie la plus élevée

You might be interested in
g calculate the effectiveness radiation dosage in sieverts for a 79 kg person who is exposed 6.8x10^9
Elza [17]

Answer:

The answer is "\bold{dosage = 0.031 rem}"

Explanation:

please find the complete question in the attached file.

Given value:

m = 79\  kg  \\\\n = 3.4 \times  10^9 \\\\E = 5.5  \times  10^{-13} \\\\ RBE = 15

\to E = n E\\

        = 3.4  \times  10^9  \times  5.5  \times  10^{-13} \\\\      = 1.87 \times  10^{-3}

\to E(absorbed) = 1.87  \times 10^{-3}  \times  0.87 = 1.63  \times  10^{-3}

calculating the radiation absorbed per kg:

= \frac{1.63  \times  10^{-3}}{79}  \\\\ = 2.06  \times  10^{-5} \\\\ = 0.00206 \  rad

\to Dosage = 0.00206  \times  15 \\

                 = 0.031 \ \ rem

4 0
3 years ago
The small ball of mass m and its supporting wire become a simple pendulum when the horizontal cord is severed. Determine the rat
natali 33 [55]

Answer:

See the attached image and the explanation below

Explanation:

We must draw a schematic of the described problem, after the sketch it is necessary to make a free body diagram, at the time before and after cutting the cord.

These free body diagrams can be seen in the attached image.

First we perform a sum of forces on the x & y axes before cutting the cord, to be able to find the T tension of the wire. (This analysis can be seen in the attached image).

In this way we get the T-wire tension equation, before cutting.

Now we make another free body diagram, for the moment when the wire is cut (see in the attached diagram).

It is important to clarify that when the cord is cut, the system will no longer be in statically, therefore newton's second law will be used for summation of forces which will be equal to the product of mass by acceleration.

Finally with equations 1 and 2 we can find the K ratio.

5 0
3 years ago
A parallel-plate air capacitor of area A = 28.1 cm2 and plate separation of d = 3.80 mm is charged by a battery to a voltage of
Bas_tet [7]

Answer:

4.52×10⁻¹⁰ C

Explanation:

The charge stored in a capacitor is given as,

Q = CV.................... Equation 1

Where Q = Charge stored in a capacitor, C = Capacitance of the capacitor, V = Voltage.

But,

C = e₀A/d.............. Equation 2

Where e₀= permitivity of free space, A = Area of the plates, d = distance of separation of the plates

Substitute equation 2 into equation 1

Q = e₀AV/d................ Equation 3

Given: A = 28.1 cm² = 0.00281 m², V = 69.0 V, d = 3.8 mm = 0.0038 m

Constant: e₀ = 8.85×10⁻¹² F/m.

Substitute into equation  3

Q =8.85×10⁻¹²×0.00281×69/0.0038

Q = 4.52×10⁻¹⁰ C.

Hence the charge on the capacitor = 4.52×10⁻¹⁰ C

5 0
3 years ago
The universal gas constant is 8.31451 J/K · mol. Calculate the change in internal energy of 7 mol of helium gas when its tempera
Mama L [17]

Answer:

Change in internal energy of the gas is given as

\Delta U = 427.8 J

Explanation:

change in internal energy of the ideal gas is given as

\Delta U = \frac{f}{2}nR\Delta T

here we know that

n = 7 mol

R = 8.31451 J/K-mol

\Delta T = 4.9 k

since we know that Helium gas is a monoatomic gas so we have

f = 3

now we have

\Delta U = \frac{3}{2}(7)(8.31451)(4.9)

\Delta U = 427.8 J

3 0
3 years ago
How will the current change in a series circuit if more resistors are added to it?
poizon [28]
The more resistance you have the more you have to push to make a current flow
7 0
3 years ago
Other questions:
  • Which one of the following substances is a liquid fuel used in rocket engines?
    11·2 answers
  • What will be the pressure exerterd by the 0bject if 4000n is acting on an area of 50msqure
    15·1 answer
  • Doug is doing work. Without knowing exactly what he is doing, which can be said about the work he is doing?
    15·2 answers
  • Give an example of when your average speed would be higher than instantaneous speed
    12·1 answer
  • The positive muon (?+), an unstable particle, lives on average 2.20×10?6s (measured in its own frame of reference) before decayi
    15·1 answer
  • A coil of 150 turns of wire is in the form of a circle of radius 7.5 cm, and sits in the center of a dipole magnet that produces
    11·1 answer
  • Please complete it if you know the answer. "The active region of a transistor is for.........
    7·1 answer
  • The body is subjected to a force of 0,4 N m with a shoulder of 5 cm. What is the magnitude of this force?​
    11·1 answer
  • It takes 0.5 s to complete a 3 m wave. What is the speed of the wave?
    6·1 answer
  • A whale comes to the surface to breathe and then dives at an angle of 20.0 ∘ below the horizontal (see the figure (Figure 1)). I
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!