Quiz me. Test my knowledge. Yes this will fail.

[gophins72]

You want science, I give you science.

What significant event happened to the earth about 4.55 billion years ago?

What is the purpose of a branch prediction unit in a microprocessor?

What was Howard Roark's profession?

Why does a galvanic cell eventually cease to operate?

What do you call the average perpendicular flow through a closed surface (hint: it is the average normal component * surface area)?

Who is credited with inventing the periodic table of elements?

What is the difference between hydrogen and deuterium?

Why is carbon dating only reliable up to 40,000-50,000 years old?

Why can't you use carbon dating to decide how old a piece of rock is?

What principle or "effect" in physics can you use to determine if a galaxy is moving towards or away from us?

What are the names of the islands that enabled Charles Darwin to formulate his theory of evolution?

What was the chief value of Robert Milikan's Oil Drop Experiment, the results of which later earned him a nobel prize in physics?

Which Jupiter moon is believed to be the most likely place for extraterrestrial life in our solar system due to a water ocean under a surface of ice?

What moon feature of Enceladus is believed to be the cause of Saturn's E-Ring, discovered by the Cassini–Huygens space probe in 2005?

What special feature of the earth allows us to experience the phenomenon as the Aurora Borealis (hint: the atmosphere is not the answer I'm looking for) ?

What is significant about the Cambrian era?

 

[Mr. Pedantic]

Ooh.

You want science, I give you science.

What significant event happened to the earth about 4.55 billion years ago?

Formation of the earth.

What is the purpose of a branch prediction unit in a microprocessor?

Predicting...the instructions required on a particular piece of data?

What was Howard Roark's profession?

No idea.

Why does a galvanic cell eventually cease to operate?

No idea.

What do you call the average perpendicular flow through a closed surface (hint: it is the average normal component * surface area)?

Of a field? Flux.

Who is credited with inventing the periodic table of elements?

Dmitri Mendeleev

What is the difference between hydrogen and deuterium?

Protium has a one proton nucleus. Deuterium has a proton and a neutron.

Why is carbon dating only reliable up to 40,000-50,000 years old?

After this time the amount of C14 remaining in the sample is so low that contamination and measurement error overcomes the measurable amount of carbon remaining.

Why can't you use carbon dating to decide how old a piece of rock is?

Carbon dating is based on the idea that organisms continually cycle the carbon in their bodies, therefore the ratio of C14 to C12 is roughly equal throughout the life of the organism. When the organism dies, this ceases, and the C14 in the organism starts to decay; this is the zero point. Whereas no such process would occur for rocks. Besides which, I imagine rocks would contain much less carbon than organisms, and they would likely be much older besides.

What principle or "effect" in physics can you use to determine if a galaxy is moving towards or away from us?

Doppler effect - farther objects tend to move faster away from us, and this results in a greater redshift. By comparing the emission spectrum of a body with a likely emission spectrum at rest (i.e. on Earth) we can approximate the distance to that body by matching up the absorbed wavelengths in the spectrum.

What are the names of the islands that enabled Charles Darwin to formulate his theory of evolution?

Galapagos

What was the chief value of Robert Milikan's Oil Drop Experiment, the results of which later earned him a nobel prize in physics?

The oil drop experiment allowed him to calculate the charge of an electron, I believe.

Which Jupiter moon is believed to be the most likely place for extraterrestrial life in our solar system due to a water ocean under a surface of ice?

I thought there were several. Europa is probably the most likely candidate; but I believe Callisto has a water ocean as well.

What moon feature of Enceladus is believed to be the cause of Saturn's E-Ring, discovered by the Cassini–Huygens space probe in 2005?

Does Enceladus have volcanoes or something? I think that's it, I really should know for sure.

What special feature of the earth allows us to experience the phenomenon as the Aurora Borealis (hint: the atmosphere is not the answer I'm looking for) ?

The magnetosphere, it funnels solar wind particles to the poles and into the atmosphere.

What is significant about the Cambrian era?

The Cambrian is known for the Cambrian Explosion, a period of time before which almost no fossils survive, and during/after which a huge abundance of fossils are found - this is either due to an actual explosion of variety of life on Earth, or due to the evolution and subsequent spread of some easily-fossilized material, like formation of shells, exoskeletons, or the like....I think

Answers in bold.

 

[Mo0o]

Medicine is what I know most about. It's just much more convenient for me, because I can make questions without having to constantly look up information. I would have thought given the focus of this board that most people giving questions would give questions in other areas of the physical sciences. Maybe my questions are too hard...

There are lots of coronary arteries, technically, but two main ones that divide to give the coronary tree - the left, and the right.

Yup, it's also responsible for quite a few other things like sexual maturation, thyroid function, etc. It's about the size of a pea, located in a socket of bone known as the sella turcica behind the nasal cavity - this is how surgeons access the pituitary, by drilling through two small walls (almost membranes) of bone at the back of the nose.

Anaemia is basically just a low haemoglobin level in the blood, and it can be caused by a variety of different conditions, iron deficiency being one. The most common cause in chronic renal failure would likely be due to a lack of erythropoietin, a hormone produced by the kidney that regulates the production of red blood cells. Without EPO, no red blood cells. No red blood cells, no haemoglobin. Another possible cause could be anaemia of chronic disease (I don't know if renal failure would cause this, though), where the body takes up all the iron it can and moves it into cells and out of the blood, simulating iron deficiency.

Measles, Mumps, Rubella for MMR. DTaP is Diphtheria, Typhoid, and acellular Pertussis.

An anastomosis is a reconnection of blood vessels that have previously split.

Very good.

Techincally speaking anastamosis is a connection between any two tubular structures

 

[SandEagle]

What is the answer to life?

" the owl says..." shtick didnt stick, did it?

 

[eits]

You want science, I give you science.

What significant event happened to the earth about 4.55 billion years ago?

What is the purpose of a branch prediction unit in a microprocessor?

What was Howard Roark's profession?

Why does a galvanic cell eventually cease to operate?

What do you call the average perpendicular flow through a closed surface (hint: it is the average normal component * surface area)?

Who is credited with inventing the periodic table of elements?

What is the difference between hydrogen and deuterium?

Why is carbon dating only reliable up to 40,000-50,000 years old?

Why can't you use carbon dating to decide how old a piece of rock is?

What principle or "effect" in physics can you use to determine if a galaxy is moving towards or away from us?

What are the names of the islands that enabled Charles Darwin to formulate his theory of evolution?

What was the chief value of Robert Milikan's Oil Drop Experiment, the results of which later earned him a nobel prize in physics?

Which Jupiter moon is believed to be the most likely place for extraterrestrial life in our solar system due to a water ocean under a surface of ice?

What moon feature of Enceladus is believed to be the cause of Saturn's E-Ring, discovered by the Cassini–Huygens space probe in 2005?

What special feature of the earth allows us to experience the phenomenon as the Aurora Borealis (hint: the atmosphere is not the answer I'm looking for) ?

What is significant about the Cambrian era?

1. it solidified into a planet

2. i'm gonna go out on a limb and say prediction?

3. wasn't he an architect? i think i remember hearing he was based after frank lloyd wright. never read the book, but know of the character.

4. corrosion?

5. pressure

6. mendeleev

7. hydrogen - no neutron... deuterium - neutron.

8. i'm gonna assume because it goes through so many half-lives that at around 40,000-50,000 years, the measurements become less accurate because there isn't much of it left to measure. don't know for sure, though... just seems like common sense.

9. carbon 14 dating can only be done on once-living organisms. carbon 14 comes from taking in carbon from the world thought eating and breathing, etc. rocks don't do this.

10. doppler

11. galapagos

12. electron charge

13. i think it's europa or some other e-named moon... enclandeus or something like that, i don't remember. i remember reading a 'popular science' when i was in high school that talked about how the moon was all covered with a big seltzer water ocean and the the crust was all ice. i also remember reading somewhere recently about scientists being able to simulate conditions and molecules on titan and blast it with radiation and being able to come out with molecules necessary for life, including structures to form dna base pairs.

14. yeah! that's it, enceladus. lol... my bad. couldn't remember. anyways, i was pretty sure that the rings were caused by an icy moon crashing into saturn while it was being formed... the ice crystals are what caused the rings (since they're 90% water). i guess i'm wrong and they were caused by enceladus (how is that pronounced, by the way?)... if it's the moon i was talking about before with selzter water oceans, then it probably has guysers and volcanoes that expel tons of water into saturn's orbit?

15. van allen belts

16. no idea other than there were no trees or plants whatsoever. it was all rock.

 

[eits]

Techincally speaking anastamosis is a connection between any two tubular structures

even more technically speaking, it's a REconnection between any two things that branch off at some point, whether it be a tubular structure, like a blood vessel, or a river.

 

[eits]

What is the significance of Lake Trasimene?

What is hydroxyapatite and why is it important?

What are rods and cones?

In biochemistry, what is the Link reaction?

How many times did Julius Caesar invade Britain?

How many wives did Henry VIII have? How many survived him?


Appeal to popularity. Sorry. Just because many people know about it does not mean it is important, or useful, or anything other than complete and utter drivel.

1. no idea... is it on the moon?

2. bones and teeth

3. photoreceptors of the eye. rods - colors, cones - definition

4. ugh... that was too long ago. something to do with pyruvate during glycolysis, but i don't remember.

5. twice? just a guess.

6. six wives: catherine of aragon, anne bolyn, jane seymore, anne of cleves, catherine howard, and catherine something... i can't remember the last one's full name. anyway, i'm pretty sure anne of cleves survived and so did the last catherine.

 

[mmntech]

How many holes does it take to fill the Royal Albert Hall?

 

[IronWing]

How many holes does it take to fill the Royal Albert Hall?

How big are these holes?

 

[GaryJohnson]

How many holes does it take to fill the Royal Albert Hall?

four thousand

How big are these holes?

rather small

 

[Mo0o]

1. no idea... is it on the moon?

2. bones and teeth

3. photoreceptors of the eye. rods - colors, cones - definition

4. ugh... that was too long ago. something to do with pyruvate during glycolysis, but i don't remember.

5. twice? just a guess.

6. six wives: catherine of aragon, anne bolyn, jane seymore, anne of cleves, catherine howard, and catherine something... i can't remember the last one's full name. anyway, i'm pretty sure anne of cleves survived and so did the last catherine.

Cones are for both color and definition. Rods are good low light situations. that's why when its really dark you see better a bit on the periphery of your vision.

 

[eits]

Cones are for both color and definition. Rods are good low light situations. that's why when its really dark you see better a bit on the periphery of your vision.

just looked it up. you are correct.

 

[gophins72]

My Answers.


What significant event happened to the earth about 4.55 billion years ago?
Formation of the earth
http://en.wikipedia.org/wiki/History_of_the_Earth

What is the purpose of a branch prediction unit in a microprocessor?
To predict whether a conditional branch is taken, if this prediction is correct, it speeds execution time, if it is incorrect then it slows down execution time. Basically it is required when processors are pipelined (all modern processors).
http://en.wikipedia.org/wiki/Branch_predictor

What was Howard Roark's profession?
Architect, Fictional Character from Ann Ryand’s book “The Fountainhead”
http://en.wikipedia.org/wiki/The_Fountainhead#Howard_Roark

Why does a galvanic cell eventually cease to operate?
Corrosion is an acceptable answer but not the one I was looking for.
Basically a galvanic cell is a battery and when it dies, it is because the reaction has completely reacted.

What do you call the average perpendicular flow through a closed surface (hint: it is the average normal component * surface area)?
Flux was the answer I was looking for
http://en.wikipedia.org/wiki/Flux

Who is credited with inventing the periodic table of elements?
http://en.wikipedia.org/wiki/Dmitri_Mendeleev

What is the difference between hydrogen and deuterium?
http://en.wikipedia.org/wiki/Deuterium
The nucleus of deuterium, called a deuteron, contains one proton and one neutron, whereas the far more common hydrogen isotope, protium, has no neutron in the nucleus.

Why is carbon dating only reliable up to 40,000-50,000 years old?
http://www.enotes.com/earth-science/carbon-dating
eit's and mr pedantic's answers are good

Why can't you use carbon dating to decide how old a piece of rock is?
http://www.enotes.com/earth-science/carbon-dating
eit's and mr pedantic's answers are good

What principle or "effect" in physics can you use to determine if a galaxy is moving towards or away from us?
Doppler effect was what I was looking for
http://en.wikipedia.org/wiki/Redshift

What are the names of the islands that enabled Charles Darwin to formulate his theory of evolution?
Galapogos
http://www.galapagosislands.com/html/darwin_s_visit.html

What was the chief value of Robert Milikan's Oil Drop Experiment, the results of which later earned him a nobel prize in physics?
The charge of an electron, also proving charge is quantized
http://en.wikipedia.org/wiki/Oil_drop_experiment

Which Jupiter moon is believed to be the most likely place for extraterrestrial life in our solar system due to a water ocean under a surface of ice?
Europa
http://en.wikipedia.org/wiki/Europa_(moon)
http://www.redlands.edu/innovation-research/7979.aspx

What moon feature of Enceladus is believed to be the cause of Saturn's E-Ring, discovered by the Cassini–Huygens space probe in 2005?
Geysers or Water vapor Volcanoes
http://en.wikipedia.org/wiki/Enceladus_(moon)


What special feature of the earth allows us to experience the phenomenon as the Aurora Borealis (hint: the atmosphere is not the answer I'm looking for) ?
Magnetic core or something along those lines is what I was looking for. Van Allen Radiation Belts could be correct but I do not know enough about them to say (it sounds right).
http://csep10.phys.utk.edu/astr161/lect/earth/magnetic.html

What is significant about the Cambrian era?
The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion", because of the relatively short time over which this diversity of forms appears. Almost all lineages of current life can more or less be traced back to this single time period.
http://www.ucmp.berkeley.edu/cambrian/camb.html

 

[eits]

^^

in regards to saturn's rings:

In December 2010, National Geographic suggested that the rings of Saturn could be the remains of a giant lost moon that was stripped of its icy shell before it crashed into the planet.[3]

http://en.wikipedia.org/wiki/Rings_of_Saturn

in regards to aurora borealis:
http://www.infoplease.com/ce6/sci/A0850404.html
i think both pedantic and my answers are acceptable, maybe more accurate than magnetic core...



those were some pretty good questions keep 'em coming

 

[gophins72]

those were some pretty good questions keep 'em coming

Thank you!

1. When multiplying a matrix by its inverse, what is the resultant matrix called?

2. Why do chemists perform recrystallization?

3. What is the mother liquor?

4. What is the significance of Stanley Miller’s experiments?

5. What is the fluid-mosaic model?

6. From Charles Dicken’s book “Great Expectations”, what is Phillip Pirrip’s nickname?

7. What is Mendel’s contribution to modern science? His work was not appreciated until after his death, what was his day job?

8. The fact that Mitochondria have DNA suggests that they where once their own what?

9. What is Brownian Movement?

10. How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?

11. Which of your senses would most likely be damaged if you endure an injury to your temporal lobe?

12. According to the famous anecdote, how did Archimedes prove that the crown given to his king was not made of pure gold?

13. Who created the first BBS (Bulletin Board System) in the world?

14. What is believed to be the business model that made pay-for-BBS’s profitable?

15. Hydrofluoric acid is extremely powerful, able to eat through bone, skin, glass, etc. However, it is considered a weak acid while Hydrochloric acid which can not nearly eat through as much material is considered a strong acid. Why?

 

[Mr. Pedantic]

Thank you!

1. When multiplying a matrix by its inverse, what is the resultant matrix called?

Identity matrix?

2. Why do chemists perform recrystallization?

To purify product

3. What is the mother liquor?

No idea

4. What is the significance of Stanley Miller’s experiments?

Establishment of the plausibility of abiogenesis

5. What is the fluid-mosaic model?

Theory of the structure of phospholipid membranes - relatively fluid phospholipid layer with proteins, cholesterol, and other chemicals interspersed throughout.

6. From Charles Dicken’s book “Great Expectations”, what is Phillip Pirrip’s nickname?

Dammit, I should know this.

7. What is Mendel’s contribution to modern science? His work was not appreciated until after his death, what was his day job?

He was a priest. He discovered that inheritance is mediated by something in organisms that passes on discrete packets of information about the parents, which combine to produce the characteristics seen in the daughter organism. We call them genes.

8. The fact that Mitochondria have DNA suggests that they where once their own what?

Bacteria.

9. What is Brownian Movement?

Brownian Motion is the 'random' movement of particles due to collision with other particles in a fluid.

10. How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?

Spectroscopy. Elements tend to have unique emission spectra - they absorb certain wavelengths of light. If light is reflected or refracted through a planet's atmosphere, then the light will contain these spectra, and they can be analyzed for elements that the planet is likely to contain.

11. Which of your senses would most likely be damaged if you endure an injury to your temporal lobe?

Hearing. Maybe smell as well? I don't really know. And I really should.

12. According to the famous anecdote, how did Archimedes prove that the crown given to his king was not made of pure gold?

A floating object in water displaces its mass. A submerged object in water displaces its volume. Using these the same mass of gold could be compared to the crown, and if the volume of the crown was greater, then there would be other elements in there.

13. Who created the first BBS (Bulletin Board System) in the world?

No idea.

14. What is believed to be the business model that made pay-for-BBS’s profitable?

Advertising...something?

15. Hydrofluoric acid is extremely powerful, able to eat through bone, skin, glass, etc. However, it is considered a weak acid while Hydrochloric acid which can not nearly eat through as much material is considered a strong acid. Why?

It's a weak acid - I'd guess that the H-F bond is so strong because of the electronegativity of fluorine, so it doesn't dissociate much in water, where the hydrogens in water already have their electrons pulled towards oxygen. Little dissociation means few protons, means weak acid.

Also, I was under the impression that in higher concentrations hydrofluoric acid was considered a strong acid.

Interesting questions. This was mostly stuff I learned nearly a decade ago, it's nice to have some revision.

What is the shape of the sp2 molecular orbital?

Who is Antonie van Leeukenhoek? (I hope I spelled it right)

In maths, what is Newton's Method?

What is phenolphthalein?

What is the mechanism of action of caffeine?

What, and where, is the hyoid?

In epidemiology, what is the difference between a cohort study and a longitudinal study?

What organism is scientist Richard Lenski best known for researching?

Who was Arthur Wellesley and why is he famous?

 

[mmntech]

Some tech stuff. No cheating, I'll know.

In audio, what does "XLR" stand for?

This part, invented in the first decade of the 20th century, made modern electronics possible. What is it, what does it do, and who invented it?

What's a cardiod microphone?

History:

Machiavelli is best known for The Prince. What was his other major treatise, and what was it about?

Name the two folk revolutionaries from the Mexican Revolution. What did they do for a living before joining their causes?

Politics:

What is mixed-proportional representation?

Who's the only Canadian federal politician to be assassinated?

 

[eits]

Thank you!

1. When multiplying a matrix by its inverse, what is the resultant matrix called?

2. Why do chemists perform recrystallization?

3. What is the mother liquor?

4. What is the significance of Stanley Miller’s experiments?

5. What is the fluid-mosaic model?

6. From Charles Dicken’s book “Great Expectations”, what is Phillip Pirrip’s nickname?

7. What is Mendel’s contribution to modern science? His work was not appreciated until after his death, what was his day job?

8. The fact that Mitochondria have DNA suggests that they where once their own what?

9. What is Brownian Movement?

10. How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?

11. Which of your senses would most likely be damaged if you endure an injury to your temporal lobe?

12. According to the famous anecdote, how did Archimedes prove that the crown given to his king was not made of pure gold?

13. Who created the first BBS (Bulletin Board System) in the world?

14. What is believed to be the business model that made pay-for-BBS’s profitable?

15. Hydrofluoric acid is extremely powerful, able to eat through bone, skin, glass, etc. However, it is considered a weak acid while Hydrochloric acid which can not nearly eat through as much material is considered a strong acid. Why?

1. no clue

2. better quality

3. the stuff that's left over after crystallization (woohoo 10th grade chemistry!)

4. recreating the conditions on the planet during it's formation to make the building blocks of life on earth

5. model that explains the cell membrane's movement and semi-permeability

6. pip

7. genetics (from pea plants)

8. aerobic bacteria

9. what i do every morning when i wake up before taking a shower

10. spectography

11. hearing loss, difficulty remembering non-verbal things like faces or songs, memory loss, epilepsy... also, it depends on which side it is. left temporal lobe damage can cause the loss of ability to understand words or ability to speak... right temporal lobe damage can cause loss of ability stop talking.

12. i can't remember the exact story, but he used buoyancy. something like he used a scale with the crown on one side and the exact mass of solid gold on the other and then did it underwater to make sure they were the same buoyancy and they weren't... either that or it was something having to do with displacement.

13. 3m?

14. uh... office announcements?

15. no clue. chemistry was never my strong suit. i'm gonna guess that it has something to do with the bonds and how willing the molecules are willing to donate their protons. /shrug

 

[gophins72]

Interesting questions. This was mostly stuff I learned nearly a decade ago, it's nice to have some revision.

What is the shape of the sp2 molecular orbital?
Dumbell shape

Who is Antonie van Leeukenhoek? (I hope I spelled it right)
coinvented the microscope in the 1660's with hooke, discovered bacteria, also claimed (incorrectly) that life came from dust

In maths, what is Newton's Method?
i think it's a method of approximating something but i forget what exactly, maybe an integral sum?

What is phenolphthalein?
a base/acid indicator phenolphthalein red turns red in a base i believe and clear otherwise. I might have that backwards.

What is the mechanism of action of caffeine?
d/k

What, and where, is the hyoid?
d/k, unless you mean thyroid, and i think it's the base of the brain

In epidemiology, what is the difference between a cohort study and a longitudinal study?
d/k, guessing that it is a study done by a peer or by a large group of people.

What organism is scientist Richard Lenski best known for researching?
d/k

Who was Arthur Wellesley and why is he famous?
d/k

edit: looked up lenski, i should have guessed

 

[gophins72]

mmntech, you got me stumped on all the questions lol


1. i think XLR means extra long record time, but maybe that's wrong lol
2. I think it was the resistor, because the transistor was later

 

[eits]

Interesting questions. This was mostly stuff I learned nearly a decade ago, it's nice to have some revision.

What is the shape of the sp2 molecular orbital?

Who is Antonie van Leeukenhoek? (I hope I spelled it right)

In maths, what is Newton's Method?

What is phenolphthalein?

What is the mechanism of action of caffeine?

What, and where, is the hyoid?

In epidemiology, what is the difference between a cohort study and a longitudinal study?

What organism is scientist Richard Lenski best known for researching?

Who was Arthur Wellesley and why is he famous?

1. oh man... uh... like a 3-leafed clover?

2. invented the microscope

3. umm... something to do with calculus?

4. an indicator in acid/base titrations... i think i remember it being magenta.

5. passes blood-brain barrier and becomes an adenosine receptor antagonist.

6. floating bone in the neck attached to various muscles... you typically see it broken in victims who've been strangled.

7. longitudinal study - long-term research to see correlations over various trials and observations with the same testing parameters on individuals.... cohort study - studying a group of people with similar characteristics that you're looking to find changes in during a study.

8. no idea... anthrax?

9. he defeated napolean at waterloo... also, i think he was also the duke of wellington (maybe?), but not positive. man, that was forever ago... 11th grade ap modern european history.

 

[eits]

Some tech stuff. No cheating, I'll know.

In audio, what does "XLR" stand for?

This part, invented in the first decade of the 20th century, made modern electronics possible. What is it, what does it do, and who invented it?

What's a cardiod microphone?

History:

Machiavelli is best known for The Prince. What was his other major treatise, and what was it about?

Name the two folk revolutionaries from the Mexican Revolution. What did they do for a living before joining their causes?

Politics:

What is mixed-proportional representation?

Who's the only Canadian federal politician to be assassinated?

1. um... no idea. couldn't even venture a guess. i know what the cables look like, but i dunno what xlr stands for.

2. vacuum tube. not quite sure how they worked, though. don't know who invented it.

3. a hand-held microphone? one that's shaped like a heart? i dunno.

4. discourses of livy. talked about checks and balances.

5. emeliano zapata - cowboy? pancho villa - outlaw? honestly, i'm just going based off of what i've noticed at various mexican restaurants i've gone to throughout the years named "zapata" or "pancho villa" lol

6. it's when the proportion of the members of the governing body are represented by the proportion of how people voted. it's the system in place that's in germany. i remember that from model u.n. and from being a poli-sci minor in undergrad.

7. no idea.


christ on his throne, a couple of those were pretty difficult... and you practically asked for essay answers lol

 

[busydude]

1. When multiplying a matrix by its inverse, what is the resultant matrix called?

Identity matrix.

How are scientists able to figure out what a distant (outside of the solar system) planet’s atmosphere without sending a probe or personally visiting it?

Spectroscopy

 

[busydude]

think it's a method of approximating something but i forget what exactly, maybe an integral sum?

Method of successively approximating roots of a function.

 

[mmntech]

mmntech, you got me stumped on all the questions lol


1. i think XLR means extra long record time, but maybe that's wrong lol
2. I think it was the resistor, because the transistor was later

Nope and nope.

1. um... no idea. couldn't even venture a guess. i know what the cables look like, but i dunno what xlr stands for.

2. vacuum tube. not quite sure how they worked, though. don't know who invented it.

3. a hand-held microphone? one that's shaped like a heart? i dunno.

4. discourses of livy. talked about checks and balances.

5. emeliano zapata - cowboy? pancho villa - outlaw? honestly, i'm just going based off of what i've noticed at various mexican restaurants i've gone to throughout the years named "zapata" or "pancho villa" lol

6. it's when the proportion of the members of the governing body are represented by the proportion of how people voted. it's the system in place that's in germany. i remember that from model u.n. and from being a poli-sci minor in undergrad.

7. no idea.


christ on his throne, a couple of those were pretty difficult... and you practically asked for essay answers lol

I like long form answers. Lets me torture others the way I was tortured with them in university. :sneaky:

1. On the right track with the cable. It's actually a trick question. I'll give you part of the answer. XLR doesn't stand for anything. It's named after something.
2. Close. It is a vacuum tube. There are two types though. I'll give another hint. It's what made audio radio broadcasts possible.
3. Correct. Actually it's any mike with a heart shaped field of sound pickup.
4. Correctomundo. Actually the more important of the two IMO. Lays a lot of the groundwork for modern republicanism.
5. Right again.
6. Four for four.
7. This one is very obscure. Dennillfloss might know this one. I think he's into history. I'll give a hint. Happened in the 19th century.