Wednesday
December 7, 2016

# Search: Physics/Astronomy

Number of results: 70,384

astronomy
what good has astronomy produced?
September 5, 2011 by Varia

astronomy
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? http://en.wikibooks.org/wiki/Astronomy/Mass
April 27, 2007 by Sethi

Astronomy
Few question about astronomy: 1.how 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
September 13, 2011 by KD

astronomy
what are the contributions of astronomy?
August 29, 2011 by Varia

astronomy
what is the meaning of astronomy?
August 28, 2011 by Anonymous

astronomy/physics
determine the mass of the earth from the known period (365.25 days) and the distance of the moon (3.84X10^3 km)
December 7, 2008 by Michael

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!!
February 16, 2009 by Coralie

Physics/Astronomy
What would a person's weight be on Mars compared to one's weight on Earth?
September 14, 2010 by Mike

astronomy/physics
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.
December 5, 2011 by silvia

astronomy/physics
Use Newtonâ€™s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.
December 1, 2011 by silvia

Astronomy/Physics
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!
October 12, 2011 by Tina

Astronomy
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. ...
October 26, 2008 by TAG

Physics(astronomy)
Radio waves and x-rays are similar in what: a) comparable wavelengths b) cannot compare c)have same photon energies On the test, it said those and I picked a. Is that correct? I am nervous T_T
October 8, 2014 by John DOe

Physics/Astronomy
Predict the size of the image of Jupiter if photographed at opposition with a lens having a focal length of 9600 mm ( Assume Jupiter is a disk of 1.43 x 10^5 km and is 6.29 x 10^8 km from the earth).
April 22, 2013 by Blake

astronomy
Even though I do not believe the Big Bang is what created the universe(although what people clam the bing bang was would have been similar to what happened when God said "Let there be light" I still have astronomy hw. haha. I am having trouble with this question. The big bang ...
April 5, 2015 by sara

science
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. http://www.space.com/scienceastronomy/astronomy/epsilon_vulcan_000804.html
February 9, 2007 by liza

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.
August 2, 2009 by Josh

astronomy
Why is the sky blue?
January 21, 2008 by Belinda

Astronomy
What is the radius of the sun?
December 3, 2012 by jane

Astronomy
The saros cycle
June 11, 2013 by Terrance

Physics/astronomy
How many different photons (photons of different frequencies) can be emitted as a hydrogen atom in the fifth excited state falls back directly or indirectly to the ground state?
January 17, 2016 by Linsey

Astronomy
What is the phenomenon of differentiation and how does it occurs
November 5, 2008 by Mike

Astronomy
Why are there different types of galaxies?
July 20, 2010 by Magesh

astronomy
How long is the precession cycle?
August 29, 2010 by Anonymous

Astronomy
What type of spectrum is sunlight?
February 18, 2014 by Barbara

Astronomy
The precession of the Earth its causes, and its ramifications
March 27, 2010 by b

astronomy
What does supernova produce, helium or carbon?
April 29, 2010 by Anonymous

astronomy
What does supernova produce, helium or carbon?
April 29, 2010 by Anonymous

Astronomy
What is the Lorentz factor for a spaceship traveling at 0.5c?
March 4, 2012 by Linda

Astronomy
what are the largest stars in the HR diagram called?
March 13, 2012 by Hannah

astronomy
big bang theory define
July 15, 2012 by Luis

Astronomy
How to find the orbital radius of a planet?
December 12, 2012 by Jola

astronomy
which of the statment about CMB are true?
October 7, 2013 by Bela

Astronomy HELP
when does a full moon rise and set?
January 7, 2014 by Mary Ann

Astronomy
F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =
March 6, 2016 by Anne

Physics / Astronomy
Here is my question: Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d. I'm ...
May 28, 2008 by Barry

astronomy
why does Venus have such a high Albedo
November 6, 2008 by Mike

astronomy
on which planets would you weih more than on the earth?
April 11, 2009 by joe

Astronomy
Venus orbits 0.72 AU from the sun. What is that distance in kilometers?
September 6, 2010 by Meliset

Astronomy
Venus orbits 0.72 AU from the sun. What is that distance in kilometers?
September 7, 2010 by Meliset

Astronomy
Explain what occurs during tidal friction?
October 3, 2011 by Rebecca

Astronomy
How many degrees of longitude does the Sun move in each hour?
November 2, 2011 by James

ASTRONOMY
Compare Einstein and Newton's pictures of gravity.
December 19, 2011 by Kate

AStrONomY
What contributions of Uranus were made by the Voyager 2 program?
February 27, 2012 by CHEYANNE

Astronomy
The frequency of a radio transmitter is 90 megahertz. What is its wavelength?
March 4, 2012 by Linda

Astronomy
Why is it possible to see Mercury at 6:45 pm on February 5, 2014?
February 16, 2014 by Carol

Astronomy
How far will Venus be from Earth on February 19, 2014?
February 17, 2014 by Carol

astronomy
If the planet is in an edge-on orbit, what would its mass be (in kg)?
June 25, 2014 by keitanako

astronomy
Mars currently has a liquid convecting core.
December 7, 2016 by abdallah

Astronomy
Describe in one sentence the rotations and revolutions of the planets.
November 23, 2007 by Liz

Astronomy
If the elipse were a planet's orbit where would the sun be on the page?
April 11, 2009 by joe

astronomy
on which planets would you weigh nearly the same as on earth?
April 11, 2009 by joe

Astronomy
April 28, 2009 by John

Astronomy
April 28, 2009 by John

astronomy
How are cepheid and rr lyrae variables used in determining distances?
January 8, 2010 by Taylor

astronomy
Explain the cause of the Earths' season. I need a diagram for my explanation
March 27, 2010 by b

U of M astronomy
if a planet has a period of 1 century, what is its average distance from the Sun in AU?
February 14, 2011 by pam

astronomy
What is the electromagnetic flux coming from the surface of a 5000K blackbody?
March 19, 2011 by james

astronomy
Why the Universe ,as we know it,made of matter,with no antimatter,and what is the role of neutrino? Thanks
October 7, 2013 by Mia

Astronomy
Why is it possible to see the planet Mercury at 6:45 pm on February 5, 2014.
February 15, 2014 by Rashida

Astronomy
What five object were found in the sky on February 5, 2014 at 9 pm.
February 15, 2014 by Ann

Astronomy
Why is the portion of Venus opposite the direction of the Sun not apparent.
February 16, 2014 by Barbara

Astronomy
Why is the portion of the Moon opposite the direction of the Sun not apparent?
February 16, 2014 by Barbara

Astronomy
How do astronomers know whether they are seeing planets or stars when they are distant?
November 24, 2014 by Ben

physics /astronomy
If a system has multiple planets all in the exact same orbital plane, does the transit of one planet imply that all planets in the system must transit as well?
November 24, 2014 by karen

Astronomy
How did the voyager mission change our preconception of Jupiter and its moons
November 9, 2007 by Liz

astronomy
why is it necessary for ultrviolet telescopes to be placed on a space-based platform? thanks
March 3, 2008 by amy21

Astronomy
What are two pieces of evidence that the earth is a highly differentiated body
November 5, 2008 by Mike

Math/Science/Astronomy
What is the formula to calculate the illumination fraction of the Moon?
December 24, 2008 by Anonymous

Astronomy
Does the = sign in the equation E=mc2 mean that energy and light are equivalent
March 27, 2010 by b

Astronomy
Do people wear seatbelts to protect themselves from speed or acceleration?
September 14, 2010 by Dre

astronomy
August 28, 2011 by Anonymous

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology
February 10, 2013 by sabrina

chemistry
Which of the following is not an example of a science? geology astronomy astrology ecology
February 10, 2013 by raven

Astronomy
If I was born on August 12, 1953 what is the constellation of my Astrological"Sun Sign".
February 13, 2014 by Barbara

Astronomy
What is my Astrological "Sun Sign" and how was it determine if I was born on August 12, 1953.
February 13, 2014 by Barbara

ASTRONOMY
Good evening all, I am working on a PowerPoint presentation for my Astronomy class about planet Earth - my question is: What is Earth's brightest apparent magnitude (if it has one)? I have searched every reliable source I know of (and that I come across), but I cannot seem to ...
November 7, 2014 by Andy G

Aristotle
I know Aristotle studied a lot of things but was he a physicist as well? I feel like he wasn't really one quite yet because it wasn't really officially developed yet. But I know he was very into the math of astronomy and that's basically the first beginnings of physics. So ...
January 9, 2015 by Manie

Astronomy
Why is the time at which leo transits the meridian different for mexico city and chicago?
January 28, 2009 by Melissa

Astronomy
Is the ellipse more circular when the tacks are closer together or farther apart?
April 10, 2009 by joe

Astronomy
Is the elipse more circular when the tacks are closer together or farther apart?
April 11, 2009 by joe

Astronomy
How do observations of he sun's surface tell us about conditions in the solar interior?
November 15, 2009 by Taylor

College astronomy
What would be the parallax of Alpha Centauri if measurements were made from Mars?
March 2, 2011 by Lisagail

english
Christina and Christopher worked together and completed a project about astronomy.
January 26, 2011 by Anonymous

Astronomy 1010
What are six regions of the electromagnetic spectrum? please detail and answer
January 17, 2012 by Frank

lang
A science that looks at atmosphere and the weather. A. Chemistry B. Meteorology C. Geology D. Astronomy d
February 18, 2012 by kesha

Opinion
Which class would be better(easier) to take Earth Science or Astronomy?
March 21, 2012 by Marie

Astronomy
If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
April 23, 2012 by Leila

Astronomy
If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
April 23, 2012 by Leila

astronomy
What phase is the Moon if it is visible in the sky at midnight, but not exactly, opposite the Sun?
July 15, 2012 by Gerson

Astronomy
How were the different objects in the solar system discovered? What are the properties of the ice giants?
July 26, 2012 by David

Astronomy
What is the estimated total lifetime for a star with mass 0.7 Msun ? (in billions of year)
March 4, 2014 by qwerty

Astronomy
True or False? Galaxies are distributed randomly and approximately uniformly in space.
June 18, 2014 by querty

Astronomy
What about a for a supernova in an elliptical galaxy of 10^12 solar masses and radius of 50 kpc? Yes or No
June 24, 2014 by qwerty

astronomy
What is the semi-major axis of an object that is in 2:1 mean motion resonance with Earth
December 14, 2014 by kathy

Astronomy
If you lived on Mars, which of the planets would exhibit retrograde motion? Explain.
June 3, 2015 by Emma

Physics-Astronomy
Hello, I have no idea how to do the following question. Any help would be appreciated: An energy of at least 13.6 electron-volts is required to ionise a hydrogen atom. What is the longest wavelength of electromagnetic wave capable of ionising hydrogen? And which regions of the...
November 16, 2009 by Mark

astronomy
if you shoot a cannonball due north from a latitude of -45o where will it fall 100km from the cannon
January 28, 2011 by Anonymous

astronomy
what is the speed of a point on the equator in miles per hour as the earth rotates on its axis?
September 10, 2011 by katy

Astronomy
Enter the expression for kinetic energy ( ) below. Use m_1 for mass and v for velocity.
December 8, 2012 by LaV ern

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