Sunday
November 23, 2014

Posts by Liz


Total # Posts: 1,182

Science
On the main sequence, what type will have life spans of about ten billion years? I took Earth Science last year so although I do not have them in front of me, I believe the are in the Earth Science Reference Tables (ESRT).
January 2, 2007

Science
While the Sun's evolutionary track moves to the ______ on the H-R diagram, the tracks of very massive stars are almost horizontally to the right?
January 2, 2007

Science
Most of our knowledge of evolutionary tracks comes from stars found in?
January 2, 2007

Science
The thermonuclear process in solar and less massive stars which produces one atom of helium from four of hydrogen is the?
January 2, 2007

Science Question 2
The helium flash converts three helium nuclei to what heavier element? A.beryllium B.boron C.lithium D.carbon E.iron Carbon. Carbon has six protons, obtained from three helium nuclei. http://abyss.uoregon.edu/~js/ast122/lectures/lec16.html A
December 11, 2006

Science Question 1
How many helium atoms must undergo fusion at 100 million K in the helium flash? A.Two B.Three C.Four D.Six E.It varies with density At that temperature, three form carbon, and a fourth with the carbon forms oxygen. This is the main source of carbon and oxygen in the universe. ...
December 11, 2006

calculus
It is estimated that x years from now, the value V(x) of an acre of farmland will be increasing at the rate of: V'(x)= 0.4x^3/sqrroot(0.2x^4+8000 dollars per year. The land is currently worth $500 per acre. A. Find V(x) b. How much will the land be worth in 10 years? You ...
December 4, 2006

Calculus
The rate of growth of the profit (in millions of dollars) from a new technology is approximated by P'(x)=xe^(-x^2) Where x represents time measured in years. The total profit in the thrid year that the new technology is in operation is $10,000. A. Find the total profit ...
December 4, 2006

math
I'm not sure how to multiply (x^2+6x=9) by (x^2-1) I would assume that you would have to distribute everything as normal, including the 9 ( the answer being x^4-x^2+6x^3-6x=9x^2-9)but I am really not sure because I havent done something like this before.
November 25, 2006

Science 5
Rotation of the protostar helps generate the magnetic fields and bipolar flows. True False Since this is not my area of expertise, I searched Google under the key words "protostar rotation magnetic" to get these possible sources: http://www.aas.org/publications/baas/...
November 21, 2006

Science 4
As a protostar evolves from stage 4 to stage 6, it gets hotter but much less bright. True False http://en.wikipedia.org/wiki/Stellar_evolution
November 21, 2006

Science 3
There are a lot more M2V stars than M2Ib stars. True False http://en.wikipedia.org/wiki/Stellar_classification
November 21, 2006

Science 2
For a few of the largest stars, direct measurements of their disks are possible. True False
November 21, 2006

Science 1
At apparent magnitude -3, Jupiter is 100X brighter than second magnitude Polaris. True False Read. http://en.wikipedia.org/wiki/Apparent_magnitude hint: - signs mean brighter but the rule of times 2 still holds If leaving a rference like I did helps you, pleas leave a thankyou...
November 21, 2006

Math-approximation with fractions:7th grade math
How do i solve a problem such as .................... 5/24,9/35
November 19, 2006

Life Science
_____________ is the study of the relationships between living things and their environments. ecology
November 12, 2006

Math
what is the volume of a can that is 3 inches in radius and inches high? pi*r^2*h where h is the height (which isn't included in the problem).
November 12, 2006

Science 5
What are the characteristics of globular cluster stars? A.no stars as hot as our Sun B.old age and hundreds of thousands to millions of member stars C.no main sequence stars left, with billions of member stars D.a few hundred stars, most still on the main sequence E.hundreds ...
November 7, 2006

Science 4
Most stars probably formed A.alone B.in intergalactic space, then were swept up into the Galaxy C.in clusters in the Galaxy's spiral arms D.from planetary nebulae E.in the galactic Nucleus, then migrated outward later I'd guess roughly C ...but im no scientist. check ...
November 7, 2006

Science 3
Which of these is NOT a source of the shock waves that lead to protostars? A. radiation from the OB stars in emission nebulae B. expanding Herbig-Haro objects C. expanding planetary nebula shells D. violent supernovae explosions E. collisions between galaxies MUMBO JUMBO
November 7, 2006

Science 2
Which of these is NOT typical of a condensing protostar? A.magnetic fields producing polar flows B.dusty disks around their equators C.Herbig-Haro objects projecting a light year out in space D.fusion of helium into carbon in their cores E.more infrared than visible light ...
November 7, 2006

Science 4
M type stars usually have some molecular lines, such as TiO, well in their spectra. True or False TRUE
November 6, 2006

Science 3
If a star were moved 10X farther away, its absolute magnitude would drop five magnitudes. True or False TRUE
November 6, 2006

Science 2
Young open clusters appear blue in color. True or False FALSE
November 6, 2006

Science 1
Shock waves from supernovae disrupt an interstellar cloud and prevent it from forming stars. True or False TRUE
November 6, 2006

english vocab word
Hi Can I please get help in a sentence using the word philistine - It was no surprise that our philistine friend, Ken, decided to stay home and watch football instead of joining us at the symphony concert. While at the debate, his philistine girlfriend polished her nails. http...
November 5, 2006

english vocab word
can you please help me -- I need a sentence using the word - cupidity I know that it means GREED...but i do not have a clear understading of the word and need please a more indepth definition of the word. An intense desire to have something...almost like a "lust." ...
November 5, 2006

Science 4
How long does it take an M-type star to form, compared to the time for a solar-type to form? A.Half as long B.About the same time C.Twice as long D.20 times as long E.200 times as long c
November 2, 2006

Science 3
What is characteristic of a main sequence star? A.It has a mass less than the Sun’s B.It has rapid rotation and a strong stellar wind C.Nuclear fusion in the core varies due to the amount of gravitational contraction that occurs and which heavy elements are produced D.The...
November 2, 2006

Science 2
What is the critical temperature at which hydrogen can fuse into helium in the star’s core? A.5,800 K B.26.000 K C.One million K D.Ten million K E.100 million K Please research your questions at the following links I located for you: http://en.wikipedia.org/wiki/...
November 2, 2006

Science 1
When an H ll region is observed, it signals what stage in stellar formation? A.
November 2, 2006

ENG DESP HELP PLEASE
Are these corret! tahnk you so much review for test! are my answers correct 1. Several people listened, but nobody voluntered??? simple 2. Gina and Sam picked the wildflowers, and we arranged them??? simple 3. Snow fell: winter was now upon us?? compound 4. Mrs Smith may be in...
October 31, 2006

ENG help please julie
I am revieing for a test these ar teh ones I can't figure out? **the choice simple - complex or compund 1. even the air must have smelled different that long ago. 2. if you could travel in time, would you go to the time of the dinosaurs? 3. To scientists, this is clear ...
October 31, 2006

english desperate
Are these corret! tahnk you so much review for test! are my answers correct 1. Several people listened, but nobody voluntered??? simple 2. Gina and dave picked the wild flowers, and we arranged them???simple 3. Snow fell: winter was now upon us?? compound 4. Mrs Smith may be ...
October 31, 2006

Julie more help please
Are these corret! tahnk you so much review for test! are my answers correct 1. Several people listened, but nobody voluntered??? simple 2. Gina and dave picked the wild flowers, and we arranged them???simple 3. Snow fell: winter was now upon us?? compound 4. Mrs Smith may be ...
October 31, 2006

english
are both of these a compound or simple sentences I need to have these as a model for the other one's. 1. Her mother went to trade show, but doreen stayed home. 2. Wang and his brother looked at the problem and spotted the solution. i think: 1. compound because "Her ...
October 30, 2006

english desperate
please help: are these compound or simple sentence the boat nosed up to the dock; our trip was finally over. several people listened, but nobody volunteered. shelia calls it a dragon fly; I call it a darning needle. THESE all seem like compund sentences - I need to know these ...
October 30, 2006

Biology
Thanks so much! <3 (:
October 26, 2006

english
can you please help me with two sentences inc these words. cupidity philistine i am trying to learn them for a test in a sentence thanks joes cupidity became obvious, as he had aranged the entire party just so Jane and Fred would meet. Fred,Dont be such a philistine, come ...
October 25, 2006

Science
_______ and heat caused by overlying rocks and ___________________ elements produce magma. pressure for first word magma large
October 24, 2006

Science Question 2
Having nothing to do with trigonometry, what type of parallaxes use the width of absorption lines to estimate the star's luminosity and size and distance? A.bolometric B.photometric C.spectroscopic D.holographic E.video metric You can find the answer here: http://www....
October 23, 2006

Science Question 1
The entire spectral classification of our Sun is what? A.M5V B.G2lB C.K9lll D.Not Given D. (not given) The sun is a G2V star.
October 23, 2006

Science Question 4
Which type of binary can have their sizes measured directly by photometry? A.Virtual B.Visual C.Eclipsing D.Spectroscopic E.Astrometric e. i think its definatly d I think Eclipsing binaries. Please see: http://en.wikipedia.org/wiki/Astrometric_binary
October 19, 2006

Science Question 3
Upon what data do measurements of sizes of eclipsing binaries depend? A.Their orbital periods and separations B.Their masses and luminosities C.Their Doppler shifts and durations of stages of their eclipses D.Their temperatures and speeds E.Their temperatures and masses C. You...
October 19, 2006

Science Question 2
The entire spectral classification of our Sun is what? A.M5V B.G2lB C.K9lll D.Not Given The sun is a G2 I don't know what LB stands for. please read: http://www.solstation.com/stars/sol.htm
October 19, 2006

Science Question 1
Having nothing to do with trigonometry, what type of parallaxes use the width of absorption lines to estimate the star's luminosity and size and distance? A.bolometric B.photometric C.spectroscopic D.holographic E.video metric http://en.wikipedia.org/wiki/...
October 19, 2006

Science 4
The Sun's complete spectral type is what? The sun is a G2V type star. The G2 denotes spectral type and the V denotes a dwarf star on the "main sequence" of stellar evolution.
October 19, 2006

Science 3
Which statement about stellar motion is incorrect? A.In general, the closer a star is, the more its proper motion. B.The radical velocity is measured by the Doppler shift. C.The transverse velocity is measured by the proper motion and distance. D.Like parallax, proper motion ...
October 19, 2006

Science 2
While Sirius, the Dog Star, is type AO, a start just a step hotter than M0 is a related what? A.M1 B.K9 C.F5 D.AOK E.B9 B. K9 K9 is followed by M0 in the temperature/spectral classification of stars. K's are hotter than M's, and K9 is the coolest of the K's
October 19, 2006

Science
In general, the narrower the spectral line of a star A.the hotter the star is B.the bigger the star is C.the denser the star is D.the smaller that star is E.the cooler the star is E. the cooler the star is . Lower temperatures result less Doppler broadening of lines in the ...
October 19, 2006

Home Economics
Produced from a blend of cheeses and America's most popular cheese Surely the answers to all these questions are in your textbook or in your notes from classes. (You do take notes in class, right?) If all else fails, put your main keywords into the search box at http://www...
October 19, 2006

Home Economics
foods cooked in a cheese sauce.
October 19, 2006

Home Economics
Enzyme that causes milk protein to settle out.
October 19, 2006

Home Economics
Frequent use of cheese-to stimulate the __________.
October 19, 2006

Home Economics
"after meal" treats for which cream cheese is often used
October 19, 2006

Home Economics
Stage of cheese making when curd and salt are packed into hoops (_______- cheese
October 19, 2006

Home Economics
The chief protein of milk
October 19, 2006

physics
At what altitude above the Earth's surface would your weight be three-fifths of what it is at the Earth's surface? Assume re = 6.371 10^3 km. If weight decreases as the inverse square of distance, then 3/5= (re/r)^2 where r is the distance from the center of earth to ...
October 16, 2006

Phyisics
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.02 hours. How high above Earth's surface is the satellite Use keplers law, comparing the moon period and distance from Earth to the Satellite. There are other ways of doing this.
October 16, 2006

Science
The H-R diagram can be a plot of what? A. luminosity versus mass B. absolute magnitude versus spectral type C. color index versus spectral type D. size verses mass E. temperature verses density information on forces and motion information on forces and motion
October 9, 2006

Science
The stellar magnitude scale is defined such that if two stars differ in brightness by a factor of 100, they differ in magnitude by what magnitudes? I TRIED TO FIGUR OUT WHAT YOU WERE SAYING BUT I CANT FIGUIR IT OUT SORRY Savannah 3rd grade Mrs.Love A factor of 10 is one order ...
October 9, 2006

Science
In general, the narrower the spectral line of a star A.the hotter the star is B.the bigger the star is C.the denser the star is D.the smaller that star is E.the cooler the star is http://en.wikipedia.org/wiki/Stellar_classification
October 9, 2006

Science
While Sirius, the Dog Star, is type AO, a start just a step hotter than M0 is a related what? A.M1 B.K9 C.F5 D.AOK E.B9
October 9, 2006

Science
What is the Sun's complete spectral type? http://en.wikipedia.org/wiki/Stellar_classification
October 9, 2006

Science
Which statement about stellar motion is incorrect? A.In general, the closer a star is, the more its proper motion. B.The radical velocity is measured by the Doppler shift. C.The transverse velocity is measured by the proper motion and distance. D.Like parallax, proper motion ...
October 9, 2006

Science
Which of the rock-forming mineral groups makes up the largest group of minerals in the Earth's crust? Look here for your answer. http://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&q=minerals+earth%27s+crust&btnG=Search http://en.wikipedia.org/wiki/Silicate_minerals I ...
October 3, 2006

grammer - english
can the word --- THERE be an adverb and a pronoun - depending on the sentence? Yes. Look it up in your online or hard copy dictionary for examples of both. I hope this helps. Thaqnks for asking. help me find the verbs from sentences ám
September 25, 2006

writeteacher
hi so sorry - have a quiz and trying to understadn the practice test - so in the other sentence there and these are pronouns there can be both a pronoun and an adverb
September 25, 2006

write teacher english
are te hquotations in the right place. "The only question," he says, "is how much money your willing to spend. We're talking about hundreds of millions of dollars." I put in the quotes but I am a little confused if you can have two sentences inside one ...
September 25, 2006

writeteacher
Hi thanks so much for your help but I am confused- I thought in the above it was there and these however in this sentence: Mike looked for the dogs, but there were none. -- I thought the pronoun was there but someone else answered and said it was none. That someone -- Ms.Sue...
September 25, 2006

Quotations
the sentence is: Let's meet back here in one hour, okay? No, I was hoping to explore this area for at least two hours. add in comma - quotations and end marks. Is the answer " Let's okay" " No hours" the sentence is: Let's meet back here in one ...
September 25, 2006

english pronouns
While walking in the rain forest, I myself saw the bug under the tree. Are the pronouns I and myself dogs are over there; these are the mamals. Are the pronouns there and these. While walking in the rain forest, I myself saw the bug under the tree. Are the pronouns I and ...
September 25, 2006

english pronoun
please help what is the pronoun in hte two sentneces below: the assiment is under other pro-nouns 1. Many of the visitors were awed by the museum. 2. Sam looked for the mice, but there were none. There are all kinds of pronouns. Here is a webpage that lists and explains them: ...
September 25, 2006

Science Question
How might the most common occurring stars be described, based on our stellar neighborhood? A. White Dwarfs B. K giants C. A main sequence D. M main sequence The most common stars are Red Dwarfs. I dont like the answer choices. Most of them are M type stars. To heat up one kg ...
September 19, 2006

math
can anyone help me with these 3 problems I am trying to check my daughters hoime work it has bee na few years. 1. The sum of n and twenty -two, multiplied by three, is 78 2. the product of z and 17 is less than or equal to the difference of twenty -one minus z. 3.two increased...
September 15, 2006

Physical Science Question 3
Compare the visible part of the ear to a satellite dish in terms of form and function. I will be happy to critique your thinking on this. WTF bobpursley? You are of no help to me on any of this! If I want you to "critique my thinking" I was ask you to, but no where ...
June 20, 2006

Physical Science Question 2
What is the electromagnetic spectrum? Give examples of each kind of wave and relate each example to its relative position in the spectrum. I will be happy to critique your thinking on this. The following 2 sites will answer all your questions. http://www.geo.mtu.edu/rs/back/...
June 20, 2006

Physical Science Question 1
What type of light passes through a polarizing filter? Polarized light, polarized in the plane of the filter?
June 20, 2006

Physical Science Question 4
How can a permanent magnet be demagnetized? A.Cut the magnet in half. B.Heat the magnet up C.Strike the magnet with a heavy blow D.both b and c You will find the answer if you read this: http://my.execpc.com/~rhoadley/magcare.htm
June 12, 2006

Physcial Science Question 3
When a surfer rides an ocean wave on her surfboard, she is actually riding on A.a crest that is toppling over B.a trough of the wave C.the rest position of the wave D.a region of rarefaction Duplicate question; Same answer a 50.0g silver spoon at 20.0c is placed in a cup of ...
June 12, 2006

Physical Science Question 2
When a surfer rides an ocean wave on her surfboard, she is actually riding on A.a crest that is toppling over B.a trough of the wave C.the rest position of the wave D.a region of rarefaction Have you ever watched a surfer or a suring movie? Actually, none of these choices are ...
June 12, 2006

Physical Science Question 1
If no friction acts on a diver during a dive, then which of the following statements is true? A.The total mechanical energy of the system increases. B.Potential energy can be converted into kinetic energy but not vice versa C.(KE+ PE)beginning = (KE + PE)end D.all of the above...
June 12, 2006

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