April 16, 2014

Search: Physics/Astronomy

Number of results: 109,418

Physical Science
Physics + Chemistry = Physical Chemistry Biology + Chemistry = Biochemistry Organic Chemistry+Geology + Chemistry = Geochemistry Astronomy + Physics = Astrophysics Biology + Geology = Paleontology Geology + Astronomy = Astrogeology Biology + Astronomy + Physics = Astronautics
Friday, June 15, 2012 at 6:48am by Elena

Science 1 question....
Monday, January 6, 2014 at 12:57pm by Ms. Sue

what good has astronomy produced?
Monday, September 5, 2011 at 12:52pm by Varia

what are the contributions of astronomy?
Monday, August 29, 2011 at 7:32pm by Varia

what is the meaning of astronomy?
Sunday, August 28, 2011 at 3:32pm by Anonymous

The first thing you should learn when studying astronomy is that it is not astrology. Astrology is not a science. Objects weigh about 1/6 as much on the moon as they do on Earth.
Saturday, March 16, 2013 at 8:24pm by drwls

Sunday, August 28, 2011 at 3:32pm by Ms. Sue

At a more northern latitude, but still in the southern hemisphere. Figure out how many degrees of longitude correspond to 100 km and add it to -45. It's roughly one degree. Is this really what they are considering astronomy these days?
Friday, January 28, 2011 at 3:10pm by drwls

This sounds more like geology (or planetary studies) than astronomy. Presumably the direction of plate motion changed where there is a bend in the chain. So.. Divide 4000*10^3 m by 0.08 m/year. You get 50 million years.
Thursday, November 24, 2011 at 8:36pm by drwls

See here:
Tuesday, December 11, 2007 at 9:21pm by Count Iblis

Two stars in a binary system are determined from their position on the H-R diagram and the mass-luminiosity relation to have a combined mass of 8 M. Their orbital period, P, is 1 year. What is their orbital seperation, a?
Friday, April 27, 2007 at 12:42pm by Sethi

I dont know if there are only five. I have friends in biophysics, astrophysics, astronomy, high energy physics, condensed matter physics, nuclear energy, and physics education. Most engineering is applied physics.
Wednesday, August 29, 2007 at 8:17pm by Bobpursley

Physics - Astronomy
(0.7)^3 = 0.343
Thursday, November 15, 2012 at 12:50am by drwls

Few question about astronomy: many centimetres is equivalent to a light-nanosecond 2. How long is an astronomical unit (AU) in light-minutes (1min, i.e., the distance that light travels in a vacuum in one minute)? Please show the calculation if there is any Thanks
Tuesday, September 13, 2011 at 5:07am by KD

That is basic physics, not astronomy. Kinetic energy is (1/2)*m_1*v^2 if you use those symbols The _1 after m doesn't really mean anything
Saturday, December 8, 2012 at 10:35pm by drwls

Intro to Astronomy
If 1% is left, (0.01) = (0.5)^N where N is the number of half-lives. N = 6.644 minimum age = 37,900 years There will be less than 1% left if the sample is older than that, so that is a minimum age. There is not much about astronomy here
Thursday, February 9, 2012 at 11:00pm by drwls

As I said in my answer to your other question, you must insert a ^ before exponents. you are not going to learn much astronomy with sloppy equation writing. (a) Divide the Jupiter-sun distance (in km) by the length of 1 a.u. (also in km). That will give you the number of au's...
Sunday, October 2, 2011 at 12:21pm by drwls

F=G(Mjupiter)(massmoon)/r^2 where R is the distance between them in meters.
Wednesday, October 12, 2011 at 3:22pm by bobpursley

Physics - Astronomy
[R(gap)/R(moon)] = cube root of 1/9 = 0.481
Thursday, November 15, 2012 at 12:48am by drwls

Thursday, May 23, 2013 at 2:54am by bobpursley

You might try here: Sra
Sunday, August 29, 2010 at 4:16pm by SraJMcGin

Astronomy-HELP PLEASE!!!!!
This is definitely NOT my area, so here are some Astronomy Tutorials (quasars) to go through: Sra
Monday, December 5, 2011 at 4:01pm by SraJMcGin

Physics / Astronomy
I thought I answered this earlier today. Did you post the questiuon before?
Wednesday, May 28, 2008 at 8:58pm by drwls

Another astronomy (algebra-based physics) question
Enough, already. Show your work for further help
Wednesday, March 4, 2009 at 4:23am by drwls

Deciding on a H.S. Science Course
I'm currently a sophomore, and I need to plan a science course for next year. Do you know if colleges require physics? Would a college prefer to see physics on my transcript in oppose to Environmental Sciences or Astronomy? Thanks!!
Monday, February 16, 2009 at 5:43pm by Coralie

determine the mass of the earth from the known period (365.25 days) and the distance of the moon (3.84X10^3 km)
Sunday, December 7, 2008 at 3:21pm by Michael

physics? astronomy?
Using an obscure school subject discourages the appropriate experts from even looking at your question.
Wednesday, September 22, 2010 at 8:39pm by Ms. Sue

There are effects of magnetism and charged particles in the ionosphere, but that is well out of the atmosphere.
Tuesday, September 30, 2008 at 8:56pm by bobpursley

I agree that it is a matter of interest, as well as the likelihood that you will be employed in or affected by either field. The subject that you find more interesting might seem easier. Biology would be another option. Where I went to college, the liberal arts majors who ...
Wednesday, March 21, 2012 at 8:29pm by drwls

I disagree. One of the sentences is wrong.
Tuesday, January 3, 2012 at 4:12pm by Ms. Sue

What would a person's weight be on Mars compared to one's weight on Earth?
Tuesday, September 14, 2010 at 11:51pm by Mike

Check this site.
Monday, May 11, 2009 at 7:01pm by Ms. Sue

semi-major axis = a = 0.367 au closest distance = (1-e)*a = 0.794 a = 0.291 au
Monday, December 5, 2011 at 4:44pm by drwls

Both. The acceleration in a crash is high because one or both vehicles had a high velocity to begin with. Seat belts actually provide the force necessary to decelerate the body. It is better to have the force applied to the body by belts than to the head by a windshield. I don...
Tuesday, September 14, 2010 at 11:02pm by drwls

3rd grade - Solor System Scroll down and read carefully.
Sunday, February 21, 2010 at 12:22pm by Writeacher

earth/space science
The closer to the sun, the shorter the year. Look up Mercury's period, and then Saturn. You know Earths.
Sunday, June 7, 2009 at 3:52pm by bobpursley

Monday, June 8, 2009 at 5:15pm by Ms. Sue

Monday, April 11, 2011 at 5:44pm by Ms. Sue

Use Newton’s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.
Thursday, December 1, 2011 at 4:59pm by silvia

Astronomy/physics needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
Thursday, March 21, 2013 at 7:48pm by PsyDAG

Mercury has a semi-major axis of 0.367AU and an eccentricity of e=0.206. Calculate its distance to the Sun at perihelion. Remember to use units of AU in your answer.
Monday, December 5, 2011 at 4:44pm by silvia

How do they expect to teach anything about physics or astronomy with such vague banal airhead questions? If someone is paying to take this course, they are being ripped off.
Sunday, July 15, 2012 at 9:28pm by drwls

Need some help with Astronomy. I need to figure out the acceleration of gravity on the surface of certain planets. For example, I need to find the acceleration of gravity on Mars when the mass is .11 times the mass of Earth and the radius is .53 times the radius of Earth. ...
Sunday, October 26, 2008 at 6:37pm by TAG

3rd Grade
Sunday, February 21, 2010 at 4:23pm by Ms. Sue

social studies
Friday, February 8, 2013 at 11:27am by Ms. Sue

Pluto is considered a minor or dwarf planet.
Wednesday, January 15, 2014 at 3:24pm by Ms. Sue

The parallax angle, in radians, is the ratio of the Earth orbit diameter to the stellar distance. It is the size of the angle that the stellar position changes relative to stars much farther away, during the course of a year. Read this for a good review: http://www.astronomy....
Monday, December 12, 2011 at 11:50am by drwls

Here is a really neat site.
Tuesday, December 2, 2008 at 3:40pm by GuruBlue

Social studies
Monday, October 8, 2012 at 8:15pm by Ms. Sue

US History II
I don't see any connection between the two.
Tuesday, August 3, 2010 at 11:04am by Ms. Sue

mantle. See for more about the terminolofy.
Monday, December 17, 2007 at 6:56pm by drwls

Tuesday, December 4, 2012 at 5:37pm by Ms. Sue

I found this by typing into google "composition Jupiter atmosphere" without the quotation marks. You can do the same for the sun.
Tuesday, October 30, 2012 at 9:57am by DrBob222

I cannot calculate the gravitational force between these two objects. I am confused. Jupiter (R=800 million km, M = 2 x 10 to the 27th power kg and a 100 kg person on earth. Please help!
Wednesday, October 12, 2011 at 3:22pm by Tina

Friday, March 28, 2008 at 12:50pm by DrBob222

I have to find out some facts about the dwarf planet vulcan. I have tried wikipedia but it was no help. Can any one please give me some facts or websites that can. This may be what you need.
Friday, February 9, 2007 at 12:21pm by liza

7th Grade
In my school, we have three units for seventh grade: Chemistry, Physics, & Astronomy. If you want to know your personal science class curriculum, ask your teacher! Hope I helped! ~Sanja
Monday, September 16, 2013 at 9:51pm by Sanja

Physics (Astronomy)
Hi, what keeps objects in orbit, for example, preventing the moon from crashing into the earth under the force of gravity? I have read that it speeds up as it gets closer to earth but I don't understand why. Can someone help me? Thanks.
Sunday, August 2, 2009 at 2:47pm by Josh

Saturday, September 29, 2012 at 8:45pm by Ms. Sue

Tuesday, November 27, 2012 at 4:20pm by Ms. Sue

Wednesday, July 10, 2013 at 9:18pm by Ms. Sue

Space science is an all-encompassing term that describes all of the various science fields that are concerned with the study of the Universe, generally also meaning "excluding the Earth" and "outside of the Earth's atmosphere". Originally, all of these fields were considered ...
Tuesday, September 22, 2009 at 8:06pm by sara

(Weight on Earth)/(Weight on Neptune) = 5/7 Thus the weight on Neptune is 7/5 or 1.4 times the weight on Earth. A better value is 1.2. They may have been using older data. For a reference on this, see
Friday, July 11, 2008 at 2:18am by drwls

This is related to physics since it is talking about relativity. The answer is c. Imagine looking out your car window at a bus stop. If you are moving right, the bus stop seems to be moving towards your left. It moves to the left at the same speed as you move to the right. ...
Saturday, October 30, 2010 at 3:49am by Marco

thank you
Sunday, October 4, 2009 at 7:45pm by jess

thank you!
Monday, April 5, 2010 at 7:28pm by Anonymous

Friday, May 13, 2011 at 12:18am by drwls

Sunday, August 28, 2011 at 3:32pm by Anonymous

Saturday, September 10, 2011 at 7:09pm by katy

Thank you for your help!
Monday, December 12, 2011 at 11:50am by Kaitlyn

Thank you
Sunday, March 4, 2012 at 12:09pm by Linda

thank you
Sunday, March 4, 2012 at 12:58pm by Linda

Tuesday, October 1, 2013 at 5:26pm by Anonymous

let c be the distance from the center to the focus let a be the semi-major axis e = c/a c = e*a = .206*.367 = .0756 distance at perihelion = a-c = .367 - .0756 = 0.291 oh, yeah. AU (duh)
Monday, December 5, 2011 at 4:44pm by Steve

Tuesday, March 12, 2013 at 10:06pm by Ms. Sue

Great, thanks. :)
Monday, March 17, 2008 at 9:49pm by Lindsay

E. G. is correct.
Tuesday, January 27, 2009 at 11:40pm by drwls

Saturday, April 11, 2009 at 6:17pm by Kara

Saturday, September 5, 2009 at 2:39pm by PsyDAG

Sunday, December 6, 2009 at 11:49pm by O_o Rion

Thursday, April 29, 2010 at 8:29pm by bobpursley

Friday, October 15, 2010 at 8:54pm by Ms. Sue

Wednesday, February 2, 2011 at 3:45pm by Heather

Tuesday, April 17, 2007 at 4:20am by Anonymous

You are correct.
Thursday, May 12, 2011 at 11:23pm by Peter

You're welcome.
Sunday, August 28, 2011 at 3:32pm by Ms. Sue

You're welcome.
Saturday, September 10, 2011 at 7:09pm by Ms. Sue

what is your thinking?
Wednesday, November 9, 2011 at 11:17pm by bobpursley

The last one.
Sunday, July 15, 2012 at 7:29pm by drwls

Tuesday, October 1, 2013 at 5:26pm by Anonymous

Tuesday, October 19, 2010 at 4:23pm by Anonymous

Monday, November 14, 2011 at 4:56pm by Anonymous

Sunday, November 10, 2013 at 10:17am by Anonymous

Thursday, December 5, 2013 at 1:41pm by thrt

5 32
Thursday, December 5, 2013 at 1:38pm by Anonymous

Astronomy HELP
thank you
Tuesday, January 7, 2014 at 3:15pm by Mary Ann

Thursday, February 13, 2014 at 11:20am by Damon

F = M g, where g = 9.8 m/s^2, or, if you really must use that Newton law, F =G*Me*M/Re^2 M = 39 kg G = universal gravity constant Re = Earth radius Me = Earth mass You will have to look up the last three quantities. I have not memorized them. The answers should agree
Thursday, December 1, 2011 at 4:59pm by drwls

It is true that Jupiter has a lower density than Earth, by about a factor of 5. But its volume is over 1000 times larger. The next largest planet is Saturn. It has a lower density than Jupiter, and is considerably smaller as well. it has about 1/3 the mass of Jupiter. This web...
Tuesday, November 23, 2010 at 12:32am by drwls

Don't plan on a career in the field, especially with NASA. Get a more general eduction in engineering (especially electronic) and applied physics (especially optics). You will still be qualified to work in astronomy, but will have more options. I speak from experience.
Thursday, December 8, 2011 at 7:08am by drwls

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