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dusya [7]
3 years ago
7

Bosons & Fermions A new type of quantum object has been discovered. When a large collection of these are cooled to almost ab

solute zero, they are observed to all condense into the same state - the ground state. Select all that are True.
Is this object a Fermion obeying Fermi-Dirac statistics?
Is this object a Boson obeying Bose-Einstein statistics?
Could this object have intrinsic spin 2 hbar?
Would the Schrodinger equation for two of these particles be symmetric with exchange of the two particles?
Could this object have intrinsic spin s = 3/2 hbar?
Would the Schrodinger equation for two of these particles be anti-symmetric with exchange of the two particles?
Physics
1 answer:
Lena [83]3 years ago
5 0

Answer:

Only 2,3,4 are true

Explanation:

Bosons Particles are particles that condense to the same state. Bosons particle have integral spin like 0 , $\hbar$, 2$\hbar, 3$\hbar$, etc. Bosons particles always have asymmetric wave function and there is exchange of particles.

1) It does not obey Fermi_ Dirac statistics

2) It obeys Bose-Einstein statistics

3) The object can have intrinsic spin 2$\hbar

4) Yes the Bosons particle is always symmetric with exchange of particles

5) No Bosons particle are symmetric and not asymmetric

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A 1,250 W electric motor is connected to a 220 Vrms, 60 Hz source. The power factor is lagging by 0.65. To correct the pf to 0.9
Black_prince [1.1K]

Answer:

C = 46.891 \mu F

Explanation:

Given data:

v = 220 rms

power factor = 0.65

P = 1250 W

New power factor is 0.9 lag

we knwo that

s = \frac{P}{P.F} < COS^{-1} 0.65

S = \frac{1250}{0.65} < 49.45

s = 1923.09 < 49.65^o

s = [1250 + 1461 j] vA

P.F new = cos [tan^{-1} \frac{Q_{new}}{P}]

solving for Q_{new}

Q_{new} = P tan [cos^{-1} P.F new]

Q_{new} = 1250 [tan[cos^{-1}0.9]]

Q_{new} = 605.40 VARS

Q_C = Q - Q_{new}

Q_C = 1461 - 605.4 = 855.6 vars

Q_C = \frac[v_{rms}^2}{xc} =v_{rms}^2 \omega C

C = \frac{Q_C}{ v_{rms}^2 \omega}

C = \frac{855.6}{220^2 \times 2\pi \times 60}

C = 4..689 \times 10^{-5} Faraday

C = 46.891 \mu F

6 0
4 years ago
What do we mean when we describe forces as balanced?
aivan3 [116]

Well, first, let's recognize that there is no such thing as a force that is
balanced or unbalanced.

When we say that a group of two or more forces is balanced, we mean
that when you add up all the magnitudes and directions of the forces, the
whole group adds up to zero, so they have the same net effect as if there
were no force at all.

3 0
4 years ago
Students are using the experimental setup shown in the image in which the two ends of a string are attached to a car and to a ha
AlekseyPX

The Newton's second law and kinematics allows to find the result of the error when placing the masses in the car is:

  • Acceleration decreases.
  • The plot of position vs. time squared is still linear, but the slope is less.

     

Newton's second law gives a relationship between the net force, mass and acceleration of the body

      F = ma

      a = \frac{F}{m}

Where F is the force, m the mass and the acceleration

 

Kinematics studies the motion of bodies, looking for relationships between position, velocity, and acceleration.

         x = v₀ t + ½ a t²

In the experiment, the position and time of the car are measured, starting from rest in each experiment.

        x = ½ a t²

Let's substitute

      x =  ½ ( \frac{F}{m} ) t²

This is the equation that the students should graph, a graph of the position versus time squared can be made to obtain a line.

The slope of the line is the acceleration of the car, which is related to the force that is the weight of the hanging mass.

When the student makes the mistake of placing the mass on the car, the acceleration decreases therefore in a graph the position values ​​are smaller for each time.

The linearity of the graph is maintained, but when calculating the slope it gives lower values.

In conclusion using Newton's second law and kinematics we can find the result of the error when placing the masses on the car is:

  • Acceleration decreases.
  • The plot of position vs. time squared is still linear, but the slope is less.

Learn more here: brainly.com/question/11298125

7 0
3 years ago
Read 2 more answers
A land breeze usually originates during the _____.
Nadusha1986 [10]
<span>evening and flows toward the water</span>
8 0
3 years ago
Read 2 more answers
Please help me fast
MakcuM [25]

Answer:

b I think. sorry if it's wrong

6 0
3 years ago
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