Question

In: Physics

10. The experimentally verified amalgamations or unifications in physics so far are (select all that apply)...

10. The experimentally verified amalgamations or unifications in physics so far are

(select all that apply)

1. Heat and Mechanics become Statistical Mechanics

2. Gravity and Quantum Mechanics become Quantum Gravity

3. Electricity and Magnetism become Electrodynamics

4. Electrodynamics and the Weak Force become Electroweak theory

5. The Weak Force and Strong Force become Quantum Hadrodynamics

6. Electroweak theory and Quantum Chromodynamics become Grand Unified Theory (GUT)

7. GUT and Gravity become string theory or M-theory

11. Which ones of question (10) are correct descriptions of actual current theories being pursued in physics, but have not been experimentally confirmed yet?

12. In Physics before 1920, Feynman describes long-range and short-range forces. What three current physics theories would we call these now (state which theory goes with which force).

13. State which of the four fundamental forces (gravity, weak, electromagnetic (E&M), strong) are predominantly involved in the following processes:

1. My hand bouncing back up when I bang it against a table.

2. Ice melting on a hot day.

3. Ice freezing in the freezer.

4. Barbecuing hot dogs.

5. Flying to the moon with current conventional means.

6. Flying to the nearest star (not counting the sun) in just 5 years.

7. The gazillions of neutrinos that are flying out of the sun right now.

8. Whatever is going on as I type this sentence and these black letters appear :)

9. A pendulum clock going back and forth.

10. Boiling water.

11. Peeling out (or burning rubber) when you accelerate a car really fast.

12. Getting the protons in the Large Hadron Collider up to total energy 13 TeV.

13. Nuclear power plant moderation.

Expert Solution

13. State which of the four fundamental forces (gravity, weak, electromagnetic (E&M), strong) are predominantly involved in the following processes:

There are four fundamental forces

Gravitational Force – Weakest force; but infinite range.

It is applicable only to macroscopic bodies.

Weak Nuclear Force – Next weakest; but short range.
Electromagnetic Force – Stronger, with infinite range.
Strong Nuclear Force – Strongest; but short range.

Gravitational force acts on anything with matter, energy and/or momentum. Force is always attractive, and it affects everything in the Universe.
The electromagnetic force acts on any particle with an electric charge. Like charges repel one another, opposite charges attract, and electromagnetic forces are mediated by the photon. It occurs over infinite distances, and is not applicable to neutral objects.
The strong force acts on any particle with a color charge, which are quarks and gluons exclusively. It holds individual quarks together in baryons (like protons or neutrons) and mesons, and binds atomic nuclei together. It operates over short distances only, falling off rapidly for color-neutral bound states.
And the weak force is responsible for radioactive decays. It’s mediated by the W-and-Z bosons, and occurs over incredibly short distances only.

1. My hand bouncing back up when I bang it against a table.

Gravitational force

2. Ice melting on a hot day.

weak force

3. Ice freezing in the freezer.

weak force

4. Barbecuing hot dogs.

5. Flying to the moon with current conventional means.

6. Flying to the nearest star (not counting the sun) in just 5 years.

7. The gazillions of neutrinos that are flying out of the sun right now.

8. Whatever is going on as I type this sentence and these black letters appear :)

9. A pendulum clock going back and forth.

10. Boiling water.

11. Peeling out (or burning rubber) when you accelerate a car really fast.

12. Getting the protons in the Large Hadron Collider up to total energy 13 TeV.

13. Nuclear power plant moderation.

genius_generous answered 2 years ago

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