Search: Physics - mass of a galaxy

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Physics - mass of a galaxy
A star at the edge of the Andromeda galaxy appears to be orbiting the center of that galaxy at the speed of about 200km/s. The star is about g*10^9AU from the center of the galaxy. Calculate a rough estimate of the mass of the Andromeda galaxy. Earth orbital radius is 1.40*10^8
Saturday, December 4, 2010 at 5:16am by Farah

Physics
A star of mass 2.0 1028 kg that is 1.6 1020 m from the center of a galaxy revolves around that center once every 3.4 108 years. Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of this star, and the ...
Friday, February 16, 2007 at 4:30pm by winterWX

physics
A star of mass 2.0 1031 kg that is 4.8 1020 m from the center of a galaxy revolves around that center once every 4.2 108 years. Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of this star, and the ...
Friday, July 16, 2010 at 7:26pm by Sam

Science need help ?????///
An astronomer observes two galaxies, A and B, which have redshifts of: Galaxy A = 0.020 and Galaxy B = 0.010. Which galaxy is closest to us and what is its distance away from us? You may assume that the Hubble constant is H0 = 75 km s–1 Mpc−1 and that the speed ...
Sunday, April 14, 2013 at 4:59pm by sam

Cosmology
magine you look through a really strong telescope and see a rich cluster. Your telescope is so good that you can see a single galaxy at the center of the cluster. What can you say about that galaxy and be pretty confident that you are correct? It has mass smaller than that of ...
Friday, March 1, 2013 at 7:55am by C

physics
The sun rotates around the center of the milky way galaxy at a distance of about 30,000 light years (1ly= 9.5*10^15m). if it takes about 200 million years to make one rotation, estimate the mass of our galaxy. Assume that the mass distribution of galaxy is concentrated mostly ...
Saturday, October 25, 2008 at 4:28pm by jason

Physics
Our Milky Way galaxy is very similar to our neighboring galaxy Andromeda. Consider that each galaxy contains approximately 4.0 x 10^11 stars each star having an average mass of 2.0 x 10^30 kg. a. If the gravitational pull of Andromeda is 2.4 x 10^30 N, how far away is ...
Friday, January 4, 2013 at 1:49am by Robby

Physics - mass of a galaxy
1 a.u. = 1.40*10^8 km = 1.40*10^11 m For the mass of the entire galaxy, M, you will have to assume a spherical distribution of mass, with the star in question at the outside, at distance R. In that case, the centripetal acceleration of the star is V^2/R = G M/R2 Solve for M. M...
Saturday, December 4, 2010 at 5:16am by drwls

Physics
The Hubble Space Telescope (HST) has recorded evidence of a black hole at the center of the M87 galaxy. Using Doppler data, it's been measured that matter is orbiting the center of this galaxy at an orbital speed of 7.5x10 5 m/s, out at a radius of 5.7x10 17 m. Calculate ...
Thursday, July 26, 2012 at 12:00pm by Zac

simple PHYSICS!!!
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2?
Wednesday, March 20, 2013 at 1:55am by please..anyone help!!

physics
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2?
Thursday, March 21, 2013 at 6:41am by rohit

Physics!
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2?
Monday, March 18, 2013 at 2:56am by please..anyone help!!

Astronomy
Which event is likely to trigger rapid growth in supermassive black hole mass? -A merger of two gas-rich galaxies. -Direct collisions of stellar-mass black holes in collapsing globular clusters. -Tidal disruption of a dwarf elliptical galaxy by a large elliptical galaxy. -A ...
Saturday, March 16, 2013 at 1:41am by qwerty

Cosmology
What observations were used by Edwin Hubble to show that the universe is expanding? - The distance to a galaxy is proportional to its luminosity. - The distance to a galaxy is inversely proportional to its apparent size. - The distance to a galaxy is proportional to its ...
Tuesday, January 8, 2013 at 8:08pm by qwerty

science
which of the statements below is true? a) the stars in a galaxy are held together by gravity b) Stars in a galaxy slowly rotate around a center c) The Milky Way is the only galaxy in the universe d)All of the above just need to know if my answer is correct or wrong d
Monday, August 16, 2010 at 5:04pm by ant

Physics
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2? Details and assumptions You may assume the...
Friday, March 22, 2013 at 5:32am by Jack

physics
If the mass of the Galaxy is all at the center the angular velocity at distance R is given by ω = sqr(M•G/R^3), where M = central mass kg, G = gravitational constant 6.67 x 10-11 Nm2kg-2, R = distance from central mass m
Thursday, March 8, 2012 at 4:03pm by Elena

Physics
Please help me solve this! The spectrum of the sodium atom is detected in the light from a distant galaxy. If the 590.0 nm line is redshifted to 658.5 nm, at what speed is the galaxy receding from the Earth?
Wednesday, August 11, 2010 at 12:04pm by Brian

Astronomy - help!
Imagine that you have obtained spectra for several galaxies and have measured the observed wavelength of the H emission line of atomic hydrogen. The rest wavelength of H is 656.3 nanometers (nm). Your results are as follows: • Galaxy 1: Observed H ...
Saturday, November 29, 2008 at 4:38pm by anonymous

Astronomy
Given that the mass of the Milky Way galaxy is 10^11 times that of the Sun and that the sun is 2.6x10^20 meters from its center, what is the Sun's orbital speed around the center of the galaxy? How long does it take the Sun to orbit the Milky Way? (In this problem, we ...
Tuesday, April 10, 2007 at 4:19pm by Manny

maths
the galaxy we live in is roughly lens shaped,and pins.its diameter is given inlight years. (1 light year=9.5Exp12km) calculate the circuference or our galaxy in kilometres. the earth is at a point 3Exp4 light yaersfrom the centre.How far does the earth travel in one turn of th...
Saturday, August 23, 2008 at 5:41pm by jade

Cosmology
The single largest uncertainty in the measurement of the Hubble constant using gravitational lenses comes from uncertainty of... * the distance to the lensing cluster or galaxy. * the mass distribution of the lensed quasar. * the distance to the lensed quasar. * the mass ...
Wednesday, January 16, 2013 at 12:18am by qwerty

Physical Science
Galaxy A is 600 million light years from earth. Galaxy B is moving away from the earth at a speed that is 80% as large as that of Galaxy A. How far from earth is Galaxy B? A. 750 million light years. B. 640 million light years. C. 540 million light years. D. 480 million light ...
Thursday, October 27, 2011 at 1:07pm by Anonymous

science
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×1020 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s2?
Monday, March 18, 2013 at 12:38am by ayan

science
How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?
Monday, December 5, 2011 at 2:17am by Shirley

Physical Science
How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?
Sunday, December 4, 2011 at 10:48pm by Shirley

Physical Science
How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?
Saturday, December 3, 2011 at 11:28pm by Shirley

Grammar
Literally, it means a vast group of stars and planets, like our Milky Way Galaxy. Metaphorically, you can use it to refer to a huge group of whatever you choose -- people or whatever. http://www.answers.com/galaxy
Thursday, November 20, 2008 at 7:57pm by Writeacher

ASTRONOMY
In which type of galaxy would you most likely to observe a massive star supernova – in a giant elliptical or in a large spiral galaxy? Explain
Saturday, November 29, 2008 at 2:28am by anonymous

Astronomy
The apparent brightness of a Cepheid variable star in a far-away galaxy is measured to be 640,000 times fainter compared to an equivalent star 2,000 light years away from the Sun in our Galaxy. Assuming that there is no light absorption between galaxies, what is the distance ...
Saturday, November 20, 2010 at 11:07pm by Anonymous

3 grade English
Your son is doing very well! :-) In the sentence about the galaxy, he didn't use an action verb. An action verb to use with galaxy could be "has." Our galaxy has many stars. For the last one -- Stars reflect light from the sun. The light from stars travel a long ...
Friday, January 20, 2012 at 5:51pm by Ms. Sue

Astronomy
Light is gathered from a distant galaxy and one of the spectral lines is observed at 500 nm when it should be 400 nm. The velocity of this galaxy is _____ km/s.
Tuesday, November 28, 2006 at 10:32pm by Tim

Science
*shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution But what would be the factors? I can't write lack of darkness during the day.
Monday, February 22, 2010 at 7:23pm by Sara

Science-8th Grade
5. Volume is an object is how much ________ it takes up. 6. When we measure the temperature of an object in the metric system, we use _______ 7. Scientist say that measuring mass of an object means measuring how much matter something has. What is matter? 8. You are a space ...
Monday, September 29, 2008 at 11:16pm by Joy

physics
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16 × 1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.21 × 1014 Hz. Calculate the speed at which the galaxy is receding ...
Wednesday, May 18, 2011 at 12:14am by Joan

Physics--please help!!
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16·1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.76·1014 Hz. Calculate the speed at which the galaxy is receding from ...
Monday, May 6, 2013 at 10:29am by Kelly

Physical Science
Try some of the following links for information: http://www.google.com/search?q=How+does+the+mass+of+all+the+interstellar+matter+in+our+galaxy+compare+with+the+total+mass+of+its+stars%3F+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-...
Saturday, December 3, 2011 at 11:28pm by SraJMcGin

science
Try some of the following links for information: http://www.google.com/search?q=How+does+the+mass+of+all+the+interstellar+matter+in+our+galaxy+compare+with+the+total+mass+of+its+stars%3F+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-...
Monday, December 5, 2011 at 2:17am by SraJMcGin

Physical Science
If you include dark matter, which is poorly understood and invisible, and makes up about 90% of the total Milky Way's mass, there is more interstellar matter than stars within our galaxy. However, the total mass of interstellar gas and dust is a few percent of the total ...
Sunday, December 4, 2011 at 10:48pm by drwls

science
An average diameter of a star is approximately 109 m and an average diameter of a galaxy is 1021 m. Considering the given data, apply a sense of scale calculation to determine if when a galaxy’s diameter is scaled down to the length of Manhattan (21.6 km long), would the ...
Monday, October 10, 2011 at 9:10pm by Aly

Science
Which distance is the greatest ? A. The distance across the Milky Way Galaxy. B. The distance to the nearest star Cluster. C. The distance across the solar system. D. The distance to the nearest Galaxy.
Monday, January 30, 2012 at 6:51pm by Natalie

physics??
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 41.3 km/s and 52.7 km/s. The slower planet's orbital period is 7.74 years. (a) What is the mass of the star? (b) What ...
Tuesday, February 15, 2011 at 8:22pm by Gina

science
Since c) is wrong, d) can't be right. http://en.wikipedia.org/wiki/Galaxy
Monday, August 16, 2010 at 5:04pm by Ms. Sue

Science
with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to 3000. *shape of the galaxy *size of the galaxy *The sun's light *light reflection from earth *light pollution *lackness of darkness *horizon view Are ...
Monday, February 22, 2010 at 9:23pm by Sara

Physics
When you look at a distant galaxy through a telescope, how is it that you're looking backward in time?
Friday, February 22, 2008 at 8:29pm by Nikki

physics
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of ...
Thursday, May 23, 2013 at 2:54am by hrdcvrdcv

Physics
The wavelength of light emitted from a distant galaxy by a hydrogen atom is observed to be 400 nm. If it is known that the laboratory wavelength of this light emitted by hydrogen is 380 nm, what is the velocity of the galaxy? (a) .135c away from Earth (b) .135c toward Earth (c...
Friday, November 4, 2011 at 12:55pm by Arielle

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 ...
Tuesday, November 7, 2006 at 9:19pm by Liz

science
An average diameter of a star is approximately 1 X 10^9 m and an average diameter of a galaxy is 1 X 10^21 m. Considering the given data, apply a sense of scale calculation to determine if when a galaxy’s diameter is scaled down to the length of Manhattan (21.6 km long), ...
Monday, October 10, 2011 at 9:10pm by Aly

physics
How would one plug the gravitational constant into an equation? To be honest, I'm having a hard time with the idea of the gravitational constant in general, but I need to solve an equation for the circular velocity of a galaxy. I know I need to multiply the gravitational ...
Thursday, March 8, 2012 at 4:03pm by Grace

College Physics
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 43.5 km/s and 54.0 km/s. The slower planet's orbital period is 6.53 years. (a) What is the mass of the star? (b) What ...
Thursday, March 15, 2012 at 10:22pm by Angela

Science
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of ...
Monday, May 20, 2013 at 1:17am by Abhishek Ranjan

Language arts
The boys on the soccer team will go across the street, through the valley, and into the park. What is the adjective phrase? Beyond that hill sits a house without a roof. adverb phrase is millions of stars form a galaxy,and between any two stars there are light years of space. ...
Monday, September 10, 2012 at 2:53pm by completeidiot

Physics help
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of ...
Thursday, May 23, 2013 at 11:26pm by SOmebody

physics 213
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 44.7 km/s and 56.2 km/s. The slower planet's orbital period is 8.61 years. (a) What is the mass of the star? (b) What ...
Sunday, February 19, 2012 at 4:38pm by Erin

Science
with 1*10 to the power of 22 stars in the sky. I can't put 22 in small form above 10, so that's why I'm wording it by saying to the power. So: with 1*10 to the power of 22 stars in the sky. List several factors that limit us to being able to see only about 2000 to ...
Monday, February 22, 2010 at 7:23pm by Sara

science
The brightest galaxy in the Bootes cluster of galaxies is found to have a redshift of 0.13. (Assume the speed of light, c, is 3.0 × 10 8 m s−1.) (i) Assuming the Hubble constant, H0, is 70 km s−1 Mpc−1 to two significant figures, calculate ...
Monday, August 22, 2011 at 3:02pm by mj

Science
I need to now in order which of these are big in order from biggest to smallest: Moon, Whirlpool Galaxy, Hubble Deep Feild Galaxies, Hubble Space Telescope, Pleiades Star, Cluster, Saturn Sun Then the distance from closest earth to the farthest in order: Moon, Whirlpool Galaxy...
Wednesday, January 10, 2007 at 3:42pm by Anonymous

Physics
Let's call the atomic mass unit u. 1 u = 1.6605*10^(-27) kg Mass of C is 12 u Mass of H = 1 u Mass of N = 14 u Mass of O = 16 u
Saturday, April 19, 2008 at 12:50pm by Count Iblis

Calculus
Astronomers have a mathematical model for the orbital speed of the stars as a function of their distance x from the center of the galaxy: V(x) = 350x/(1+(x^2))^(3/4) where x = 1 for 10,000 light years, x = 2 for 20,000 light years. At a distance of 10,000 light years, the ...
Tuesday, January 24, 2012 at 3:43pm by Scooby10

Physics
The acceleration to the center of the galaxy is a = V^2/R R = 2.55*10^20 m V = (2*pi*R)/[(250*10^6)*365*24*3600] = 2.03*10^5 m/s a = 1.6*10^-10 m/s^2. Pretty small
Friday, March 22, 2013 at 5:32am by drwls

science
Try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=do+the+stars+in+a+galaxy+slowly+rotate+around+a+center.+ Sra
Tuesday, March 22, 2011 at 3:36pm by SraJMcGin

8th grade
A galaxy.
Sunday, April 11, 2010 at 9:42pm by Tina

Physics
Mass of C14H18N2O5 is: 14 times mass of C + 18 times mass of H etc. Mass of C is 12 u as listed above. Then you get an answer for the mass in terms of u. If then substitute u = 1.6605*10^(-27) kg you get the mass in kg.
Saturday, April 19, 2008 at 12:50pm by Count Iblis

Physics Plz help me
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it? t= light years I got 2.4x10^8 light years but its wrong please help me out...thank you Physics Plz help me - Anon, Monday, May 6, 2013 at 9:17pm 5.98x10^6 Thatz still wrong
Tuesday, May 7, 2013 at 3:39pm by Leila

Science
Aren't we in the plane of the Milky Way Galaxy?
Monday, June 27, 2011 at 8:10am by bobpursley

English
Is galaxy one of your choices?
Thursday, March 3, 2011 at 4:41pm by Ms. Sue

science
what color are the coolest stars in the galaxy
Monday, June 2, 2008 at 9:46am by kristin

space
what kind of galaxy is the milky way?
Tuesday, May 20, 2008 at 12:17am by frank

physics
The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save
Sunday, February 10, 2013 at 8:59pm by nicole pierre

conceptual physics
The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save
Sunday, February 10, 2013 at 11:39pm by nicole pierre

Cosmology
What explains the observation that galaxy clustering is stronger at higher redshifts, which is an apparent reversal of the trend out to about z ~ 1? It is difficult to measure peculiar velocities Rich clusters have more galaxies than poor clusters Density contrast seems to ...
Friday, March 1, 2013 at 7:56am by C

English IV
Would this work for a thesis on Douglas Adams: Douglas Adams used Proto Science Fiction to write The Hitchhiker’s Guide to the Galaxy and uses satirical tone when discussing politics. welcome :) that's good you might want to be more spacific in what kinds of polotics ...
Friday, July 6, 2007 at 11:45am by Summer

Physics
forcenetdown= mass*a mgSinTheta-mu*mg*cosTheta=mass*a but notice mass divides out, so acceleration is independent of mass, if it is moving.
Wednesday, November 3, 2010 at 5:22pm by bobpursley

Physics
78-mu(mass)g=mass*.46 86-mu(mass)g=mass*.76 subtract the first equation from the second 8=mass(.30) solve for mass. b. in either equation,put in mass, g, then solve for mu.
Sunday, February 12, 2012 at 4:40pm by bobpursley

Astronomy
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Since this is not my area of expertise, I searched Google under the key words "Cepheid variables galaxy distances" to get these ...
Tuesday, April 30, 2013 at 10:41pm by PsyDAG

Science
What is a galaxy with no definite shape or size called?
Sunday, May 13, 2012 at 10:41pm by Ginny

Science
this galaxy is shaped like a round ball.
Monday, December 5, 2011 at 9:13pm by bianca

science
I think your star/galaxy sizes are mistyped.
Monday, October 10, 2011 at 9:10pm by Steve

space
If the diameter of a galaxy is 243.3 kpc, how many meters is that?
Tuesday, August 23, 2011 at 3:44pm by Anonymous

SCIENCE
WHAT IS THE DIFFERENCE BETWEEN THE ARRANGEMENT OF A CONSTELLATION AND A GALAXY?
Wednesday, January 28, 2009 at 6:04pm by KIKI

physical
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

Physics
A 0.25 mass is located on the outer edge of a wheel of radius 0.75 m that is turning at a rate of 2 revs/s. Determine the following: 1) The period of the mass 2) The angular speed of the mass in rad/s c) The tangential speed of the mass d) The centripetal acceleration of the ...
Sunday, December 13, 2009 at 7:11pm by Monika

physics
You know that you can safely stand on the hang-over end of a heavy plank that rests on a table. How far depends on your mass and the mass of the plank. Suppose you can stand on the end of a plank that overhangs the edge of the supporting table 1/4 its total length. Then how ...
Tuesday, July 22, 2008 at 1:11pm by Claire

science
does the stars in a galaxy slowly rotate around a center.
Tuesday, March 22, 2011 at 3:36pm by shakiyla

physics
A .1kg mass is located on the line between a 5kg mass and a 10kg mass. It is 4m to the right of the 5kg mass and 6m go the left of the 10kg mass. What is the magnitude and direction of the net force on the .1kg mass?
Thursday, November 17, 2011 at 8:13pm by Jen

Physics
two point masses are located in the same plane. the distance from mass 1 to the center of mass is 3.0m. The distance from mass 2 to the center of mass is 1.0m. What is m1/m2, the ratio of mass 1 to mass 2?
Tuesday, March 29, 2011 at 5:02pm by Jacob

Earth and Space Science
A galaxy is millions of light years away o.O
Saturday, March 23, 2013 at 10:09pm by Knights

Cosmology
The distance to a galaxy is proportional to its velocity relative to the Milky Way.
Tuesday, January 8, 2013 at 8:08pm by Anonymous

space
does our solar system move in the milky way galaxy?
Sunday, January 27, 2008 at 7:59pm by Isaac

Physics
I think you solve it like this...do you have the answer to verify? I am no genius in physics... Forces in the x direction = friction = mass x acceleration. friction forces is found by multiplying the coefficient of friction (u) by the normal force. so. -u x mass x gravity = ...
Saturday, November 17, 2012 at 5:33pm by Brenda

social studies
could you pl let me know the distinction between galaxy and milkyway in solar system
Friday, February 8, 2013 at 11:27am by r s telagathoty

science
do you know the word galaxy shaped like a wheel whithout cured arms
Thursday, April 19, 2012 at 8:03pm by Kandy

Physics
A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 6.2 x 1020 m, and the angular speed of the star is 4.3 x 10-15 rad/s. How long (in years) does it take for the star to make one revolution around the center?
Tuesday, October 30, 2012 at 5:54pm by Maggie

Physical Science
(a) Milky Way photographs show a dark band running down the middle, with approximately equal numbers of stars on each side. That is the way it looks when the observer is near the central plane of the disc. (b) A black hole has been inferred to be at the center of the Milky Way...
Saturday, December 3, 2011 at 11:28pm by drwls

physics
A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the expansion (or compression) of the spring from its equilibrium position. The spring is attached to a point mass of 1 kg sitting on a horizontal ...
Monday, April 4, 2011 at 3:48pm by Physics

physics
Total mass = water mass + alcohol mass + continer mass. The mass of alcohol added was 510 - 130 - 160 g = 220 g, since the 160 mL of water had a mass of 160 g.
Friday, December 5, 2008 at 7:52am by drwls

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