Number of results: 52,708
Physics (Circular Motion!!)
Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.10 s. the astronaut is strapped into a seat 7.40 m from the axis. A) What is the astronaut's tangential ...
Thursday, September 2, 2010 at 12:52pm by George
Physics
Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 40.0s to speed up from rest to its top speed of 1 rotation every 1.40s . The astronaut is strapped into a seat 4.50m from the axis. What is the astronaut's tangential ...
Monday, February 7, 2011 at 7:45pm by Fred
Physics
Astronauts who spend long periods in outer space could be adversely affected by weightlessness. One way to simulate gravity is to shape the spaceship like a cylindrical shell that rotates, with the astronauts walking on the inside surface. Explain how this simulates gravity. ...
Sunday, November 1, 2009 at 4:38pm by Sasha
Physics
We saw in Example 5.7 how a centrifuge can be used to separate cells from a liquid. To increase the speed at which objects can be separated from solution, it is useful to make the centrifuge’s speed as large as possible. If you want to design a centrifuge of diameter 68 ...
Tuesday, September 20, 2011 at 9:38pm by Rose
Physics
A centrifuge takes 100 s to spin up from rest to its final angular speed with constant angular acceleration. If a point located 8.00 cm from the axis of rotation of the centrifuge moves with a speed of 150 m/s when the centrifuge is at full speed, how many revolutions does the...
Sunday, June 24, 2012 at 7:12pm by Bloom
Physics
(b)A centrifuge has a maximum rotation rate of 10,000 rpm and can be stopped in 4 seconds. Assume the deceleration is uniform. The centrifuge radius is 8 cm. (i)What is the average angular acceleration of the centrifuge? (2%) (ii)What is the...
Thursday, August 12, 2010 at 3:21pm by Oisin
Physics
A centrifuge is spinning at 3600 rev/min, and when turned off, it rotates 50 times before coming to a stop. A) What is the initial angular velocity? B) What is the angle (in radians) that the centrifuge passes through before stopping? C) What is the angular acceleration? D) ...
Wednesday, March 5, 2008 at 12:55pm by Mike
Physics
A centrifuge is spinning at 3600 rev/min, and when turned off, it rotates 50 times before coming to a stop. A) What is the initial angular velocity? B) What is the angle (in radians) that the centrifuge passes through before stopping? C) What is the angular acceleration? D) ...
Wednesday, March 5, 2008 at 12:38pm by Mike
physics
You are designing a centrifuge to spin at a rate of 13,880 rev/min. (a) Calculate the maximum centripetal acceleration that a test-tube sample held in the centrifuge arm 14.6 cm from the rotation axis must withstand. (b) It takes 1 min, 17 s for the centrifuge to spin up to ...
Wednesday, August 31, 2011 at 4:08pm by lindsey
Physics
An advertisement claims that a centrifuge can produce a radial acceleration of 3,524g at 4,608 rev/min. Calculate the required radius of the centrifuge.
Sunday, April 6, 2008 at 3:18pm by Charlie
Physics
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 170 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real ...
Friday, February 11, 2011 at 1:03pm by M
physics
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 120 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real ...
Tuesday, March 15, 2011 at 3:18pm by olga
physics
Suppose that three astronauts outside a spaceship decide to play catch. All the astronauts weigh the same on Earth and are equally strong. The first astronaut throws the second astronaut toward the third one and the game begins. Describe the motion of the astronauts as the ...
Tuesday, August 17, 2010 at 12:23pm by Anonymous
Physics
Engineers are trying to create artificial "gravity" in a ring-shaped space station by spinning it like a centrifuge. The ring is 100m in radius. How quickly must the space station turn in order to give the astronauts inside it weights equal to their weights at the ...
Sunday, November 27, 2011 at 6:59pm by Hayli
Physics
Engineers are trying to create artificial "gravity" in a ring-shaped space station by spinning it like a centrifuge. The ring is 100m in radius. How quickly must the space station turn in order to give the astronauts inside it weights equal to their weights at the ...
Sunday, November 27, 2011 at 2:35pm by Hayli
Physics
A space station is shaped like a ring and rotates to simulate gravity. If the radius of the space station is 120 m, at what frequency must it rotate so that it simulates Earth's gravity? [Hint: The apparent weight of the astronauts must be the same as their weight on Earth.]
Saturday, March 6, 2010 at 2:37am by Max
physics
A space station is shaped like a ring and rotates to simulate gravity. If the radius of the space station is 150 m, at what frequency must it rotate so that it simulates Earth's gravity? [Hint: The apparent weight of the astronauts must be the same as their weight on Earth...
Saturday, March 13, 2010 at 11:34pm by jade
Physics
(b)A centrifuge has a maximum rotation rate of 10,000 rpm and can be stopped in 4 seconds. Assume the deceleration is uniform. The centrifuge radius is 8 cm. What is the distance that a point on the rim travels during deceleration?
Monday, August 9, 2010 at 4:44pm by Oisin
physics
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which ...
Wednesday, November 7, 2012 at 2:35pm by D
Science
Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.
Monday, March 28, 2011 at 8:13pm by Janice
Science
Compare an astronauts weight in orbit with the astronauts weight on Earth, assuming the mass of the astronaut doesn't change.
Monday, March 28, 2011 at 7:15pm by Janice
Physics
Two astronauts, each having a mass M are connected by a length of rope of length d have a negligible mass. They are isolated in space, orbiting their center of mass at an angular speed of ù0. By pulling on the rope, one of the astronauts shortens the total distance ...
Wednesday, November 14, 2012 at 7:01pm by Alphonse
Physics
A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it ...
Sunday, October 23, 2011 at 8:27pm by Jc
physics
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge in rad/s^2.
Sunday, November 28, 2010 at 2:09pm by angie
physics
A centrifuge in a medical laboratory rotates at an angular speed of 3800 rev/min. When switched off, it rotates through 46.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. in 1 rad/s2
Friday, October 22, 2010 at 10:33pm by john
physics
A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10-11 N. At how many revolutions per second should the centrifuge be operated?
Monday, October 18, 2010 at 1:30pm by Erica
physics
A centrifuge takes 1 minute to turn through 20 complete revolutions before reaching it's final speed. What is the angular acceleration (assumed constant) and what was it's final angular speed in rpm? How do I solve this without knowing the radius of the centrifuge?
Friday, March 25, 2011 at 5:09pm by Mark
Physics
You have probably seen films of astronauts floating weightless in orbiting satellites. People often get the idea that the astronauts are weightless because they are so far from the gravity of the earth. Let us see if that explanation is correct. Typically, such satellites ...
Wednesday, November 10, 2010 at 11:33pm by Carmen
physics
You have probably seen films of astronauts floating weightless in orbiting satellites. People often get the idea that the astronauts are weightless because they are so far from the gravity of the earth. Let us see if that explanation is correct. Typically, such satellites ...
Monday, November 8, 2010 at 5:11pm by steph
physics
Two astronauts, each having a mass of 78.5 kg, are connected by a 10.0-m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.50 m/s. Treating the astronauts as particles, calculate each of the following...
Saturday, December 1, 2012 at 8:47pm by heather
Physics
A typical laboratory centrifuge rotates at 4100 rpm. Test tubes have to be placed into a centrifuge very carefully because of the very large accelerations. (a) What is the acceleration at the end of a test tube that is 11 cm from the axis of rotation? dropped from a height of ...
Sunday, October 7, 2012 at 8:17pm by Mark
physics
Two astronauts, each having a mass of 89.0 kg, are connected by a 10.0 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.60 m/s. Treating the astronauts as particles, calculate each of the following.
Sunday, July 15, 2012 at 5:34pm by Anonymous
Physics
A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10−16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10−11 N. At how many revolutions per second should the centrifuge...
Thursday, October 6, 2011 at 11:01pm by Allie
physics
A centrifuge is revolving at the rate 10,000rpm. The radius of revolution for a 0.100-g particle being separated is 8.00 cm. a) Identify the given quantities with their symbols and units. b) What is the angular speed in radians per second? c) What is the linear speed in meters...
Tuesday, October 25, 2011 at 8:15pm by karen
Physics (very long question)
Two astronauts (Fig. P8.68), each having a mass of 84.0 kg, are connected by a 10.0 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway betwen them at a speed of 5.80 m/s. Treating the astronauts as particles, calculate each of the...
Thursday, November 18, 2010 at 9:00am by Anonymous
physics-rotational dynamics
Two astronauts, each having a mass of 75.0 kg, are connected by a 10.0 m rope of negligible mass. THey are isolated in space,orbiting their center of mass at speeds of 5.00 m/s. calculate A)magnitude of the angular momentum of the system by treating astronauts as particles and...
Monday, February 12, 2007 at 4:22pm by cyndi
Physics
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rpm (revolutions per minute). When switched off, it rotates 70.0 times before coming to rest. Find the constant angular acceleration of the centrifuge. (Assume the initial direction of rotation is the ...
Thursday, October 14, 2010 at 9:24pm by Gina
Programming-Java
If you have done threads with Java, you could programme each of the scheduling algorithms, and simulate the operation and obtain statistics using random data. If you have not done threads, you can still simulate the operation of the scheduling, by assuming a discrete (constant...
Sunday, March 7, 2010 at 2:36am by MathMate
st.louse
as for physics principles, Newtons First Law is all you need. As for the other question, see this, and examine the links at the bottom of this article. http://en.wikipedia.org/wiki/Centrifuge
Sunday, January 25, 2009 at 11:48pm by bobpursley
Physics HELP!
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/ min. When switched off, it rotates through 41.0 revolutions before coming to rest. (a) Find the angular speed in rad/s. (b) Find the displacement in radians. (c) Find the constant angular ...
Friday, October 26, 2012 at 4:35pm by Mel
Physics- Elena please help!!!!
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/ min. When switched off, it rotates through 41.0 revolutions before coming to rest. (a) Find the angular speed in rad/s. (b) Find the displacement in radians. (c) Find the constant angular ...
Monday, October 29, 2012 at 5:14pm by Tom
physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 3.30 g at its outer end. This centrifuge is now used in a space capsule on the planet Mercury, where g mercury is 0.378 what it is on earth. How many rpm (in terms of n) should it make to ...
Friday, November 26, 2010 at 6:22pm by bobjahng2
Physics
Two astronauts, each having a mass of 61.9 kg, are connected by a 14.7 m rope of negligible mass. They are isolated in space, orbiting their center of mass at speeds of 5.57 m/s. Calculate the magnitude of the initial angular momentum of the system by treating the astronauts ...
Wednesday, March 27, 2013 at 10:47pm by Celeste
physics help ; )
1.(a)A centrifuge accelerates from rest with an angular acceleration of 30rad/s^2.What is the angular velocity of the centrifuge after 30s?(b)The angular velocity of an auto mobile engine accelerates from 800rpm to 3000rpm in 15s.calaculate the engines angular acceleration. ...
Tuesday, November 14, 2006 at 6:14am by stefani
physics
A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it ...
Thursday, November 3, 2011 at 10:19pm by marie
physics
A laboratory centrifuge on earth makes n rpm and produces an acceleration of 3.20 g at its outer end. A) What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end? B) This centrifuge is now used in a space capsule on the planet ...
Friday, November 26, 2010 at 4:58pm by Steph
statistics
space shuttle astronauts each consume an average of 3000 calories per day. one meal normally consists of a main dish, a vegetable dish, and 2 different desserts. the astronauts can choose from 11 man dishes, 8 vegetable dishes, and 12 desserts. how many different meals are ...
Wednesday, November 9, 2011 at 4:23pm by kerri
science
The pull of gravity keeps the Moon in orbit around Earth. The distance between the Earth and Moon is about 380,000 kilometers. A crew of astronauts leaves Earth on a Monday and lands on the Moon on a Thursday. They land on the side of the Moon facing away from the Earth. On ...
Thursday, February 2, 2012 at 6:05pm by Bryan
science
When astronauts travel into space, they can still see Earth and the moon. why is this possible? A. The sun shines in the windows of their space vehicle. B. They view earth and moon through a telescope. C. The sun's light reflects off earth and the moon. D. The astronauts ...
Saturday, March 27, 2010 at 5:48pm by Anonymous
physics
Imagine that you want to create an activity for a group of children to simulate the periodic table. Suggest items that you may use and how they may be organized in rows and columns. Be creative. Share your ideas and offer further suggestions to your classmates' ideas.
Wednesday, September 15, 2010 at 2:41pm by Anonymous
Physics
If astronauts could travel at v=0.89c, we on Earth would say it takes (4.20/0.890)=4.72 years to reach Alpha Centauri, 4.20 light years away. The astronaut would disagree. (a) How much time passes on the astronaut's clocks? (b) What is the distance to Alpha Centauri ...
Wednesday, May 2, 2012 at 8:33pm by LUMBA
physics
hi i have a physics question i dont understand here is the question A sample of blood is placed in a centrifuge of radius 15 cm. the mass of the corpuscle is 3.0*10^-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0X10^-11 N. At how many...
Tuesday, January 2, 2007 at 11:12pm by becky
Physics: Astronauts and space
When out in space in International Space Station (ISS), Astronauts experience weightlessness. The ISS’s orbit is 354 km (that is 3.54 x 105 m) above the surface of the earth.The distance separating the center of the earth from the center of the ISS is then approximately ...
Monday, April 19, 2010 at 11:48pm by HELP ME!!
statistics
Use the list of random numbers given below to simulate the outcomes of tossing a quarter 11 times. Assume that the quarter is balanced (i.e., fair) and an even digit is assigned to the outcome heads (H) and an odd digit to the outcome tails (T). 9 1 9 7 2 3 9 8 0 0 4
Saturday, August 21, 2010 at 10:19pm by Anonymous
Statistics
Use the list of random numbers given below to simulate the outcomes of tossing a quarter 11 times. Assume that the quarter is balanced (i.e., fair) and an even digit is assigned to the outcome heads (H) and an odd digit to the outcome tails (T). 9 1 9 7 2 3 9 8 0 0 4 T T T T H...
Thursday, June 24, 2010 at 3:39pm by John
Sience
video clips from the International Space Station, the astronauts are seen floating around as if there is no force of gravity holding them to the floor. The truth is that the space station is orbiting Earth at a height of only about 175 kilometers above the surface. While this ...
Friday, August 20, 2010 at 2:38pm by Anonymous
phy
As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically, the astronaut is ...
Thursday, February 17, 2011 at 10:26pm by kia
physics
As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically, the astronaut is ...
Thursday, February 17, 2011 at 12:30pm by kia
physics
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. 1)Find his initial acceleration. 2)Find her initial acceleration. 3)If ...
Wednesday, February 15, 2012 at 3:09pm by HH
science
models are used to demonstrate, simulate, predict, and understand.
Wednesday, December 2, 2009 at 5:47pm by bobpursley
physics
An orbiting spacecraft is described not as a "zero-g" but rather as a "microgravity" environment for its occupants and for onboard experiments. Astronauts experience slight lurches due to the motions of equipment and other astronauts and due to venting of ...
Friday, August 10, 2012 at 2:52pm by Ben
Physics
Suppose we have a test tube with two substances of diffferent densitites inside. We want to use a centrifuge with a rotational radius of .2m to separate them. if we want to achieve a centripetal acceleration of 1000g, how fast does it have to spin/ (what is its angular ...
Monday, March 21, 2011 at 5:40pm by Nicole
HRM
Please see my previous post answering your question. YOU don't simulate.
Thursday, August 27, 2009 at 6:58pm by Ms. Sue
science
what happens to the G-force as the speed of the centrifuge increases?
Sunday, May 5, 2013 at 10:03pm by kate
statistics
using excel to simulate probablilty, what uncertainties about the results would exist?
Tuesday, August 7, 2012 at 2:54pm by wendell
physics
1. A centrifuge in a medical laboratory rotates at an angular speed of 3650 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. 2. A ball of mass 0.120 kg is dropped from rest from a ...
Sunday, July 6, 2008 at 11:03pm by Elisa
Environmental Science 11th grade
powderize, and spin in a centrifuge.
Thursday, February 7, 2013 at 12:35pm by Ken
STATISTICS
Use the random-number table to simulate the outcomes of tossing a quarter 25 times. Assume that the quarter is balanced (i.e., fair). (Start at row 1, and let 0, 1, 2, 3, 4 indicate heads and 5, 6, 7, 8, 9 indicate tails. Enter H for heads and T for tails, and enter your ...
Monday, September 6, 2010 at 4:53pm by Angela
statistics
Use the random-number table to simulate the outcomes of tossing a quarter 25 times. Assume that the quarter is balanced (i.e., fair). (Start at row 1, and let 0, 1, 2, 3, 4 indicate heads and 5, 6, 7, 8, 9 indicate tails. Enter H for heads and T for tails, and enter your ...
Tuesday, August 24, 2010 at 1:11pm by Christina
survey of sciences
1. Explain what happens to the G-force as the speed of the centrifuge increases.
Sunday, December 23, 2012 at 2:21pm by shaquilla
Physics
How much force is required to accelerate 7.0 g object at 11000 "g's" in a centrifuge?
Sunday, October 30, 2011 at 7:00pm by Millie
Science
Probably very carefully as they are floating around! Seriously, look here: http://aolsearcht3.search.aol.com/aol/search?q=how+astronauts+fix+things+in+the+spaceship&s_it=spelling Sra
Friday, August 14, 2009 at 1:42am by SraJMcGin
Chem
An air purifiction system involving litium hydroxide, LiOH, was used. LiOH absorbs carbon dioxide. 2LiOH(s) + CO2(g) <---> Li2CO3(s) + H2O(l) Use Le Chatelier's principle to explain why the amount of time astronauts can spend in a space-craft is limited?
Saturday, July 25, 2009 at 6:25pm by Lena
Science HELLLP!!
Didn't I already do this one? http://search.aol.com/aol/search?s_it=searchbox.webhome&q=+How+do+astronauts+fix+parts+in+space Sra
Friday, August 14, 2009 at 2:13am by SraJMcGin
Science
Did you do the experiment? What did you do? Did you use a centrifuge? You should be able to answer these using yout lab obervations. Is milo supposed to be milk? The definition of pasteurized can be found in a dictionary. http://www.thefreedictionary.com/pasteurization
Sunday, May 30, 2010 at 3:43am by drwls
physics
Did you get 430 rad/s for the initial angular velocity? That actually sounds low for a modern centrifuge.
Thursday, November 3, 2011 at 10:19pm by drwls
math
what kind of music do astronauts like?
Monday, April 20, 2009 at 8:34pm by Anonymous
PHYSICS HELP
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. A)Find his initial acceleration. i put 7.68* 10^-12 m/s^2 B)Find her ...
Thursday, February 16, 2012 at 2:58pm by Gina
physics
A centrifuge accelerates uniformly from rest to 18000 rpm in 180 s. Through how many revolutions did it turn in this time?
Tuesday, April 19, 2011 at 12:39pm by Cara
physics
How fast (in ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000 's?
Thursday, February 10, 2011 at 7:52pm by Tara
Physics
How do you calculate the earth's gravitational pull on astronauts?
Thursday, January 19, 2012 at 12:18pm by Harmon
science
what would the astronauts weight be on the lunar surface?
Thursday, November 10, 2011 at 10:26pm by jake
science
what would the astronauts mass be on the lunar surface?
Thursday, November 10, 2011 at 10:25pm by jake
science
vehicle that took the first astronauts to the moon
Wednesday, June 22, 2011 at 6:19pm by TAYLOR
Science HELLLP!!
How do astronauts fix parts in space?
Friday, August 14, 2009 at 2:13am by Jessica
Science
How do astronauts fix things in a space station?
Friday, August 14, 2009 at 1:42am by Jessica
physics
Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more. In this situation, assume that blood is contained in test ...
Wednesday, August 31, 2011 at 4:08pm by lindsey
Physics
How fast (in rpm ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000g's?
Thursday, February 10, 2011 at 10:16pm by Sam
college
How fast (in rpm) must a centrifuge rotate if a particle 8.2 cm from the axis of rotation is to experience an acceleration of 200000 g 's?
Friday, October 29, 2010 at 9:12am by Sasha
english
is it astronauts supposed to rest for eight hours but to excited to rest before leaving spaceship, astronauts took three hours to put on space equipment tv camera turned on so world could watch opened spaeship door 61/2 hours after landing armstrong got out first astrounauts ...
Sunday, August 5, 2012 at 8:43am by Taylor
Physics
What angular speed (in revolutions/second) is needed for a centrifuge to produce an acceleration of 1000g at a radius arm of 15.0cm?
Sunday, October 31, 2010 at 8:47pm by Tommy
Physics
What angular speed (in revolutions/second) is needed for a centrifuge to produce an acceleration of 1000g at a radius arm of 15.0cm?
Tuesday, June 8, 2010 at 10:33pm by Katie
physics
How fast (in rpm) must a centrifuge rotate if a particle 14.0 cm from the axis of rotation is to experience an acceleration of 70,000 g's?
Thursday, February 10, 2011 at 7:52pm by Jay
Physics
How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of 115,000g's?
Wednesday, February 23, 2011 at 12:01pm by Emily Grossman
Physics
A centrifuge has a rotational inertia of 6.0 10-3 kg · m2. How much energy must be supplied to bring it from rest to 420 rad/s?
Monday, April 12, 2010 at 1:44am by Max
word power
8. Often applied to politicians, the term _______ suggests hiding one's feelings while obscuring or "spinning" facts. A. simulate B. dissimulate C. vacillate [D. dissemble]
Friday, September 21, 2012 at 5:18pm by jake
CHEMISTRY! HELP!
I have a hard time getting this someone help me? Astronauts often use the unit light year to express intergalactic distances. If light travels 3.00 x .10^10 cm/s and one year is defined as 365 days, how many kilometers does light travel in one year?
Saturday, October 6, 2012 at 10:50am by Kyle
Science
The weight is same but their is less gravity in space so the astronauts would float.
Monday, March 28, 2011 at 8:13pm by Sona S.
chemistry
I did an experiment where i used straws and water to simulate a chemical equilibrium. what other differences are there between a real chemical equilibirum and my exeriemtal one.
Thursday, October 8, 2009 at 1:24am by ana
Physics
A centrifuge spins a suspension at 2500 rpm in a radius of 20 cm. What is the acceleration of the suspension?
Thursday, August 11, 2011 at 12:00pm by Prathiksha
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