jl Flashcards

1
Q

How do Cooper pairs relate to superconductivity?

A

d. All Cooper pairs act as one entity so current can’t be easily stopped

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2
Q

What is true about the Meissner effect?

A

c. Involves the repulsion of magnetic fields

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3
Q

Superconductors are…

A

b. Materials that form cooper pairs when cooled below their critical temperature

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4
Q

Superconductors have no ______ beyond a certain critical temperature:

A
  1. Resistance
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5
Q

All particles are the _____ of fields:

A
  1. Agitation
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6
Q

The speed of light decreases by half (due to refraction), the energy of a particle will:

A
  1. Decrease by 4x
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7
Q

.What is the Higgs boson?

A

d) The fundamental particle associated with the Higgs field

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8
Q

2.The Higgs field is responsible for:

A

c) Provides mass to fundamental particles.

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9
Q

.The primary source of mass:

A

Binding energy

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10
Q
  1. What was the purpose of the Michelson-Morley Experiment?
A

b. To detect the presence of the luminiferous ether.

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11
Q
  1. What did the Michelson-Morley Experiment conclude?
A

. The speed of light is constant in all directions.

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12
Q
  1. Which instrument was used in the Michelson-Morley Experiment?
A

Interferometer

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13
Q

A rocket is traveling from earth through space at a speed of 2.7x10^8 ms-1. The
pilot measures the journey to take 240 minutes. How long does mission control on
Earth think the flight lasted for? (Hint: C = 3,000,000 m/s)

A

a) 550 min

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14
Q

Which of the following statements best describes time dilation?

A

c) Time slows down as an object approaches the speed of light.

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15
Q

Which of the following statements best explains why time dilation is not constant
for all observers, even though the speed of light in a vacuum is constant for all
observers?

A

Time dilation is a result of relative motion between observers.

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16
Q

Which of the following is NOT true about gravity in General Relativity?

A

) Gravity is an attractive force between two masses

17
Q

What does Einstein’s field equation represent?

A

Both b and c

18
Q

Why is tensor analysis used in General Relativity?

A

d) all of the above

19
Q

Which of the following tasks is not suitable for SVM?

A

Determine how many engines should be on an aircraft

20
Q

Which of the following tasks is not suitable for a Neural Network Model?

A

Determine the location on moon from an image

21
Q

. Which of the following reasons is not one of the reasons that is preventing AI/ML from taking a more critical role in aerospace softwares?

22
Q

Question 1: What is an exoplanet?

A

planet that orbits a star outside the solar system

23
Q

Question 2: How do scientists detect exoplanets?

A

A) By looking for chanGes in starlight caused by planets passing in front of their host star

24
Q

Why is the research of exoplanets important?

A

To investigate the possibility of extraterrestrial life

25
What is similar between the electron and positron?
Mass
26
What physicist came up with the theory of antimatter?
Paul Dirac
27
What is the most complex antimatter element we have made so far?
) Antihelium
28
1. How does a string move through space time?
worldsheet
29
2. What is the unit of the action of a string?
Kg (m²/s)
30
3. What is String Theory also known as?
Theory of Everything