Distances/Vectors/Quiz

< Distances < Vectors
This plate from Sidney Hall - Urania's Mirror has directions indicated on the upper left side. Credit: Sidney Hall and Adam Cuerden.

Distances/Vectors is a lecture and an article about the application of laboratory physics to astronomical distances. It is a joint offering from the department and the physics department of the school of School:Physics and Astronomy. On the plate from Sidney Hall on Urania's Mirror, directions of North, East, West, and South are indicated.

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Quiz

Point added for a correct answer:   
Points for a wrong answer:
Ignore the questions' coefficients:

1. True or False, A calculation of energy is not possible unless a distance is involved.

TRUE
FALSE

2. Which of the following is not an electron volt?

the angular momentum of the planet Mercury around the Sun
a unit of energy
a quantity that denotes the ability to do work
1.2 PeV
a unit dimensioned in mass, distance, and time
a unit not based on the Coulomb

3. True or False, The force of gravity is a major portion of the strong nuclear force.

TRUE
FALSE

4. Complete the text:

The tracks in emulsion chambers have been used for measurements of nuclei above in a series of balloon-borne experiments.

5. True or False, The average value of the radius of the Earth's orbit around the Sun is a displacement.

TRUE
FALSE

6. The science of physical and logical laws is called

7. True or False, The temperature of the cores of stars may be determined by the balance between the gravitational attraction and the gas pressure.

TRUE
FALSE

8. The use of the principle of line of sight allows what phenomenon to be determined?

the Moon is closer to the Earth than the Sun
the planet Mercury is nearer to the Earth than Venus
any cumulus cloud overhead follows the Sun across the sky
the plane of the Earth's orbit around the Sun is in the plane of the galaxy
the surface of the photosphere of the Sun is hotter than the surface of Mars
lightning always precedes rain

9. True or False, A unit vector is a direction with a magnitude of one.

TRUE
FALSE

10. Which of the following are involved in the weak force?

a core which emits neutrinos
Fermi's β-decay theory
26Al
undetectable with balloon-borne detectors
Gamow-Teller interactions
steady enough emission to be used as a standard for X-ray emission
observed with delta-rays in 1731
M. Fierz

11. True or False, Any space in the real universe is completely empty of microwaves.

TRUE
FALSE

12. The strong force is involved in which of the following phenomena?

s-waves
the sum of the spins
neutrinos
Pauli's exclusion principle
deuterium
radio waves

13. True or False, When the magnetic poles of the Sun reverse during the solar cycle, there is a short time in which the polar diameter is greater than the equatorial diameter.

TRUE
FALSE

14. Which of the following are associated with electromagnetics?

angular momentum transfer
solar wind
protons
electrons
the baryon neutrino
charge neutralization

15. True or False, The generalized weak force theory combines the Fermi and Gamow-Teller conditions into a unified theory.

TRUE
FALSE

16. Which of the following are associated with the big bang neutrinos?

a launch location
relic neutrinos
of order of the photon density
the thermal energy at which neutrinos decouple
neutrinos dynamically dominate baryons
a contracting universe

17. True or False, The force of gravity is the first astronomical source of the strong nuclear force.

TRUE
FALSE

18. The generalization to self-gravitating continua is outlined focused on the classification problem of singularities and metamorphoses arising in the

.

19. If energy is the impetus behind all motion and activity, which of the following are associated with power?

a launch location
a rate of change of the impetus with time
photon density
an acceleration of the impetus
neutrinos dynamically dominating baryons
a rate of change of mass

20. Yes or No, North is generally regarded as an upward direction.

Yes
No

21. A first astronomical source has?

a temporal distribution with at least one datum
a spectral distribution
a spatial distribution
a position or location
a geognosy
scientific or observational investigations

22. Yes or No, North is generally regarded as an upward direction.

Yes
No

23.
3D Vector.svg
For standard basis, or unit, vectors (i, j, k) and vector components of a (ax, ay, az), what are the right ascension, declination, and value of a?
if the x-axis is the longitude of the Greenwich meridian, and ax equals ay, then RA equals 6h
if the x-axis is the longitude of the Greenwich meridian, and ax equals ay, then RA equals 3h
the value of a is given by a = \sqrt{a^2_x + a^2_y + a^2_z}
if ax equals ay equals az, then the declination is -45°
if ax equals ay equals az, then the declination is +45°

24. Which of the following are characteristic of the first true astrophysical gamma-ray source?

a strong 2.223 MeV emission line
a solar flare
the formation of deuterium
the electron neutrino
OSO-3
neutrons

Your score is 0 / 0

Research

Hypothesis:

  1. More questions aimed at distances and vectors may be better.

Control groups

This is an image of a Lewis rat. Credit: Charles River Laboratories.

The findings demonstrate a statistically systematic change from the status quo or the control group.

“In the design of experiments, treatments [or special properties or characteristics] are applied to [or observed in] experimental units in the treatment group(s).[1] In comparative experiments, members of the complementary group, the control group, receive either no treatment or a standard treatment.[2]"[3]

Proof of concept

Def. a “short and/or incomplete realization of a certain method or idea to demonstrate its feasibility"[4] is called a proof of concept.

Def. evidence that demonstrates that a concept is possible is called proof of concept.

The proof-of-concept structure consists of

  1. background,
  2. procedures,
  3. findings, and
  4. interpretation.[5]

See also

References

  1. ↑ Klaus Hinkelmann, Oscar Kempthorne (2008). Design and Analysis of Experiments, Volume I: Introduction to Experimental Design (2nd ed.). Wiley. ISBN 978-0-471-72756-9. http://books.google.com/?id=T3wWj2kVYZgC&printsec=frontcover.
  2. ↑ R. A. Bailey (2008). Design of comparative experiments. Cambridge University Press. ISBN 978-0-521-68357-9. http://www.cambridge.org/uk/catalogue/catalogue.asp?isbn=9780521683579.
  3. ↑ "Treatment and control groups, In: Wikipedia". San Francisco, California: Wikimedia Foundation, Inc. May 18, 2012. Retrieved 2012-05-31.
  4. ↑ "proof of concept, In: Wiktionary". San Francisco, California: Wikimedia Foundation, Inc. November 10, 2012. Retrieved 2013-01-13.
  5. ↑ Ginger Lehrman and Ian B Hogue, Sarah Palmer, Cheryl Jennings, Celsa A Spina, Ann Wiegand, Alan L Landay, Robert W Coombs, Douglas D Richman, John W Mellors, John M Coffin, Ronald J Bosch, David M Margolis (August 13, 2005). "Depletion of latent HIV-1 infection in vivo: a proof-of-concept study". Lancet 366 (9485): 549-55. doi:10.1016/S0140-6736(05)67098-5. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1894952/. Retrieved 2012-05-09.

External links

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Development status: this resource is experimental in nature.
Educational level: this is a research resource.
Resource type: this resource is a quiz.
Subject classification: this is an astronomy resource.
Subject classification: this is a physics resource .
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