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
Studentka2010 [4]
3 years ago
5

Compute the expected shell-model quadrupole moment of 209Bi () and compare with the experimental value, - 0.37 b

Physics
1 answer:
Over [174]3 years ago
3 0

Answer:

0.22 b

Explanation:

Quadrupole moment of the nucleon is,

Q=-\frac{2j-1}{2(j+1)}\frac{3}{5}R^{2}

And also,

R^{2}=R^{2} _{0}A^{\frac{2}{3} }

And, R _{0}=1.2\times 10^{-15}m

Now,

Q=-\frac{2j-1}{2(j+1)}\frac{3}{5}R^{2} _{0}A^{\frac{2}{3} }

For Bismuth j=\frac{9}{2} and A is 209.

Q=-\frac{2\frac{9}{2} -1}{2(\frac{9}{2} +1)}\frac{3}{5}(1.2\times 10^{-15}) ^{2}(209)^{\frac{2}{3} }\\Q=0.628\times 35.28\times 10^{-30} \\Q=22.15\times 10^{-30} m^{2} \\Q=0.2215\times 10^{-28} m^{2} \\Q=0.22 barn

Therefore, the expected value of quadrupole is 0.22 b which is quite related with experimental value which is 0.37 b

You might be interested in
Science fair project
victus00 [196]

For Science fair project you can do convection current

Explanation:

Show how to do the process

and then make a model to demonstrate

Materials required:

Potassium Permanganate,beaker,bunsen burner,water and retort stand

8 0
3 years ago
Read 2 more answers
A 20-newton weight is attached to a spring.
Makovka662 [10]

Answer:

40 N/m

Explanation:

The diagram attached is used to answer the question

We know from Hooke's law that extension is directly proportional to the applied force hence

F=kx where x is extension, F is applied force and k is the spring constant. Making k the subject of the formula then

k=\frac {F}{k}

From the attached diagram extension is given by subtracting unstretched spring from stretched spring hence extension, x=1-0.5=0.5m

Substituting 20 N for F and 0.5 m for x then

k=\frac {20}{0.5}=40 N/m

8 0
3 years ago
Is the battery sends a current of 10 A through a circuit for one hour, how many coulombs will flow through the circuit?
garik1379 [7]

1 Ampere = 1 coulomb/second

1 hour = 3,600 seconds

1 coulomb/second = 3,600 coulomb/hour

10 Amperes x 1 hour = 36,000 coulomb/hour
7 0
3 years ago
Rearrange the kinetic energy equation so that velocity is the subject
mars1129 [50]

Answer: V = sqrt(2K.E/M)

Explanation:

K.E = 1 /2MV^2

MV^2 = 2 K.E

V^2 = 2K.E /M

V = sqrt(2K.E/M)

6 0
2 years ago
How does a model differ from a theory?
yuradex [85]

Answer:

Explained

Explanation:

A model is practical representation of reality with help of various tools called model. It is more purposeful, appealing and provide greater understanding of the specific phenomenon called modeling.

Theory on the other hand are set of written statement which is more generalized and aimed to explain the phenomenon. Theory is developed through the process of abstraction, experimentation, and deduction.

A model is often is used to describe an application of a theory for a specific case.

4 0
3 years ago
Other questions:
  • How could you show the effect that gravity has on you? Name 2 ways and explain how they would show that gravity affects you.
    12·1 answer
  • 2 differences between calorimeter and thermometer ?
    9·1 answer
  • This is the fundamental force which holds particles together to form protons and neutrons
    11·2 answers
  • A force of 21.0 n is required to start a 2.8 kg box moving across a horizontal concrete floor. (a) what is the coefficient of st
    7·1 answer
  • Heat energy moves:_______.
    11·1 answer
  • Assume you are a fish in fresh water. you get up every morning and weigh yourself on your scales, and find you weigh 0.420 n. yo
    8·1 answer
  • A spherical shell has an outside radius of 2.60 cm and an inside radius of a. The shell wall has uniform thickness and is made o
    13·1 answer
  • 5. A hollow cylinder of mass m, radius Rc, and moment of inertia I = mRc2 is pushed against a spring (with spring constant k) co
    15·1 answer
  • Superman stops a "speeding locomotive" of mass 8.0x103 kg in 4.0 seconds. If the train was originally moving at 40.m/s,
    15·1 answer
  • What is the significance of Isaac's name? What is the significance of Isaac's name?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!