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Is probably seen this dance before your feet don't ever leave the floor the hardest part is getting arms and hips to move at the
1. 22 answers
2. asked by Liz
3. 15,169 views
There are never enough discipline on the playground: someone always is getting hurt. Subject verb agreement.
1. 5 answers
2. 1,936 views
I was wondering if my answers are correct.1. A 50kg person is taking a ride on an elevator travelling up at a steady speed of
1. 7 answers
2. 5,109 views
Suppose a 65-kg boy and a 45-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration
1. 10 answers
2. 11,086 views
A car passes by a certain point at time t = 0 hours heading east at 40 miles per hour. At t = 1 hour another car passes by the
1. 5 answers
2. 976 views
The radius of the Earth is approximately 6370 km. If one could dig down straight towards the center of the Earth, one would find
1. 4 answers
2. 2,884 views
A ball is fastened to one end of a 30cm string, and the other end is held fixed to a support. the ball whirls in a horizontal
1. 4 answers
2. 4,314 views
Sodium metal adopts a body-centered cubic structure with a density of 0.97g/cm3. A. Use this information and Avogadro's number
1. 4 answers
2. 2,215 views
Which of the following is an inertial frame of reference?a) a child on a moving swing observes the child next to them moving in
1. 2 answers
2. 708 views
If no friction acts on a diver during a dive, then which of the following statements is true?A.The total mechanical energy of
1. 2 answers
2. 926 views
When a surfer rides an ocean wave on her surfboard, she is actually riding onA.a crest that is toppling over B.a trough of the
1. 1 answer
2. 766 views
When a surfer rides an ocean wave on her surfboard, she is actually riding onA.a crest that is toppling over B.a trough of the
1. 1 answer
2. 1,318 views
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
1. 1 answer
2. 648 views
What type of light passes through a polarizing filter?Polarized light, polarized in the plane of the filter?
1. 1 answer
2. 1,091 views
What is the electromagnetic spectrum? Give examples of each kind of wave and relate each example to its relative position in the
1. 1 answer
2. 730 views
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
1. 1 answer
2. 556 views
How might the most common occurring stars be described, based on our stellar neighborhood?A. White Dwarfs B. K giants C. A main
1. 3 answers
2. 1,396 views
Which of the rock-forming mineral groups makes up the largest group of minerals in the Earth's crust?Look here for your answer.
1. 1 answer
2. 602 views
Which statement about stellar motion is incorrect?A.In general, the closer a star is, the more its proper motion. B.The radical
1. 1 answer
2. 459 views
What is the Sun's complete spectral type?http://en.wikipedia.org/wiki/Stellar_classification
1. 1 answer
2. 386 views
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
1. 1 answer
2. 356 views
In general, the narrower the spectral line of a starA.the hotter the star is B.the bigger the star is C.the denser the star is
1. 3 answers
2. 874 views
The stellar magnitude scale is defined such that if two stars differ in brightness by a factor of 100, they differ in magnitude
1. 2 answers
2. 565 views
The H-R diagram can be a plot of what?A. luminosity versus mass B. absolute magnitude versus spectral type C. color index versus
1. 1 answer
2. 596 views
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
1. 2 answers
2. 697 views
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 =
1. 5 answers
2. 994 views
The chief protein of milk
1. 2 answers
2. 495 views
Stage of cheese making when curd and salt are packed into hoops (_______- cheese
1. 2 answers
2. 547 views
"after meal" treats for which cream cheese is often used
1. 1 answer
2. 410 views
Frequent use of cheese-to stimulate the __________.
1. 1 answer
2. 337 views
Enzyme that causes milk protein to settle out.
1. 1 answer
2. 647 views
foods cooked in a cheese sauce.
1. 1 answer
2. 324 views
Produced from a blend of cheeses and America's most popular cheeseSurely the answers to all these questions are in your textbook
1. 1 answer
2. 502 views
In general, the narrower the spectral line of a starA.the hotter the star is B.the bigger the star is C.the denser the star is
1. 3 answers
2. 1,443 views
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
1. 1 answer
2. 512 views
Which statement about stellar motion is incorrect?A.In general, the closer a star is, the more its proper motion. B.The radical
1. 3 answers
2. 1,044 views
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
1. 1 answer
2. 642 views
Having nothing to do with trigonometry, what type of parallaxes use the width of absorption lines to estimate the star's
1. 2 answers
2. 683 views
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
1. 1 answer
2. 509 views
Upon what data do measurements of sizes of eclipsing binaries depend?A.Their orbital periods and separations B.Their masses and
1. 1 answer
2. 720 views
Which type of binary can have their sizes measured directly by photometry?A.Virtual B.Visual C.Eclipsing D.Spectroscopic
1. 1 answer
2. 879 views
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.
1. 1 answer
2. 418 views
Having nothing to do with trigonometry, what type of parallaxes use the width of absorption lines to estimate the star's
1. 1 answer
2. 495 views
_______ and heat caused by overlying rocks and ___________________ elements produce magma.pressure for first word magma large
1. 1 answer
2. 670 views
When an H ll region is observed, it signals what stage in stellar formation?A.
1. 1 answer
2. 430 views
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
1. 1 answer
2. 694 views
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
1. 1 answer
2. 651 views
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
1. 1 answer
2. 434 views
Shock waves from supernovae disrupt an interstellar cloud and prevent it from forming stars.True or False TRUE
1. 1 answer
2. 544 views
Young open clusters appear blue in color.True or False FALSE
1. 1 answer
2. 377 views
If a star were moved 10X farther away, its absolute magnitude would drop five magnitudes.True or False TRUE
1. 1 answer
2. 443 views
M type stars usually have some molecular lines, such as TiO, well in their spectra.True or False TRUE
1. 1 answer
2. 448 views
Which of these is NOT typical of a condensing protostar?A.magnetic fields producing polar flows B.dusty disks around their
1. 1 answer
2. 517 views
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.
1. 1 answer
2. 444 views
Most stars probably formedA.alone B.in intergalactic space, then were swept up into the Galaxy C.in clusters in the Galaxy's
1. 1 answer
2. 1,114 views
What are the characteristics of globular cluster stars?A.no stars as hot as our Sun B.old age and hundreds of thousands to
1. 1 answer
2. 888 views
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
1. 1 answer
2. 311 views
_____________ is the study of the relationships between living things and their environments.ecology
1. 1 answer
2. 428 views
At apparent magnitude -3, Jupiter is 100X brighter than second magnitude Polaris.True False Read.
1. 1 answer
2. 365 views
For a few of the largest stars, direct measurements of their disks are possible.True False
1. 1 answer
2. 343 views
There are a lot more M2V stars than M2Ib stars.True False http://en.wikipedia.org/wiki/Stellar_classification
1. 1 answer
2. 495 views
As a protostar evolves from stage 4 to stage 6, it gets hotter but much less bright.True False
1. 1 answer
2. 441 views
Rotation of the protostar helps generate the magnetic fields and bipolar flows.True False Since this is not my area of
1. 2 answers
2. 578 views
The rate of growth of the profit (in millions of dollars) from a new technology is approximated byP'(x)=xe^(-x^2) Where x
1. 2 answers
2. 685 views
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)=
1. 3 answers
2. 1,207 views
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
1. 1 answer
2. 477 views
The helium flash converts three helium nuclei to what heavier element?A.beryllium B.boron C.lithium D.carbon E.iron Carbon.
1. 1 answer
2. 593 views
The thermonuclear process in solar and less massive stars which produces one atom of helium from four of hydrogen is the?
1. 1 answer
2. 407 views
Most of our knowledge of evolutionary tracks comes from stars found in?
1. 1 answer
2. 346 views
While the Sun's evolutionary track moves to the ______ on the H-R diagram, the tracks of very massive stars are almost
1. 1 answer
2. 374 views
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
1. 1 answer
2. 538 views
In an H-R Diagram, the path showing changes in a star's luminosity and surface temperature as a function of time is called its?W
1. 1 answer
2. 473 views
Write a net ionic equation that represents the reaction:1. ionization of HCl3 in water: My answer: HClO3+H20->H3O+ClO3 2. NH3
1. 3 answers
2. 724 views
I have the answers, I just want to be sure...I'm a little hesitant..1. Explain how strong acid solutions conduct an electric
1. 10 answers
2. 2,332 views
If our Sun was Population II, the solar system would contain no ________ planets.Since this is not my area of expertise, I
1. 2 answers
2. 531 views
The resolution of metal poor red giants in the core of the Andromeda Galaxy by Walter Baade in the 1940s led to the discovery of
1. 1 answer
2. 396 views
Characteristics of a normal fault, reverse fault, and strike slip fault.I think most everything you need is on the following
1. 1 answer
2. 649 views
At why type of plate boundary are normal faults found?http://jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry19.html
1. 1 answer
2. 452 views
2 questionsRoll a fair 6 sided die 3 itmes. What is the probablity that you obtain at least one 5? Use the binomial. A 28 yr old
1. 1 answer
2. 887 views
An office building containing 96,000 square feet of space is to be made into apartments. There will be at most 15 one-bedroom
1. 4 answers
2. 1,525 views
How does its mass affect the way an object moves
1. 1 answer
2. 304 views
4/5 of 10=
1. 3 answers
2. 255 views
1.What is the formula for finding percent water hydrates?2. And what is molecular formula?
1. 3 answers
2. 384 views
please check my answers. thanxs!Solve the polynomial inequality and graph the solution set on a number line. Express the
1. 2 answers
2. 564 views
please check my answers. thanxs!Solve the polynomial inequality and graph the solution set on a number line. Express the
1. 2 answers
2. 613 views
How did the voyager mission change our preconception of Jupiter and its moons
1. 3 answers
2. 626 views
In one sentence I need to describe the shapes of the orbits of the planets. The shape must be accounted for in a model of the
1. 3 answers
2. 1,240 views
Do the rotations of the solar syatem bodies seem to indicate that most of them formed together at the same time in the same way,
1. 4 answers
2. 523 views
How could you tell if a moon or planet did not form with the rest of the solar system bodies? How might it have gotten there
1. 4 answers
2. 2,017 views
Describe in one sentence the rotations and revolutions of the planets.
1. 1 answer
2. 325 views
If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot
1. 2 answers
2. 678 views
A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does
1. 5 answers
2. 597 views
If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot
1. 4 answers
2. 936 views
A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does
1. 1 answer
2. 481 views
if a comet is 125 years from sun and has a perihelion distance of 1. AU..What is the aphelion distance?I formulated it this way,
1. 4 answers
2. 897 views
Use Pascal's triangle to expand (a+b)^6 and hence find the binomial expansion of: (x-3)^6
1. 4 answers
2. 1,751 views
Find the coefficient of x³ in the expansion of (2x+5)^6
1. 2 answers
2. 819 views
find the constant term of the expansion of (3x²+(1/x))^8I don't know where to start =\
1. 4 answers
2. 915 views
Determine the height of a tree which casts a shadow of 13.7m when the sun is at an angle of 28 degrees.
1. 3 answers
2. 1,014 views
prove the following trigonometric identity:(cos x/(1+sinx))+tanx = secx
1. 1 answer
2. 408 views

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