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?

A

Accuracy

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
Q

What is similar between the electron and positron?

A

Mass

26
Q

What physicist came up with the theory of antimatter?

A

Paul Dirac

27
Q

What is the most complex antimatter element we have made so far?

A

) Antihelium

28
Q
  1. How does a string move through space time?
A

worldsheet

29
Q
  1. What is the unit of the action of a string?
A

Kg (m²/s)

30
Q
  1. What is String Theory also known as?
A

Theory of Everything