Wednesday
April 16, 2014

Homework Help: Science: Outer Space

Recent Homework Questions About Outer Space

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VASTS (space)
Contamination where? In what?
Wednesday, April 24, 2013 at 6:43pm

VASTS (space)
Rags, tie wraps, and safety wire are examples of what type of contamination?
Wednesday, April 24, 2013 at 6:38pm

Science..physics
The moon is the Earth's nearest neighbour in space. The radius of the moon is approximately one quarter of the Earth's radius, and its mass is one eightieth of the Earth's mass. a) Culculate the weight of a man with a mass of 80kg on the surface of the moon. b) ...
Wednesday, April 24, 2013 at 4:17pm

Physics
A space station is constructed in the shape of a hollow ring of mass 5.60 104 kg. Members of the crew walk on a deck formed by the inner surface of the outer cylindrical wall of the ring, with radius 140 m. At rest when constructed, the ring is set rotating about its axis so ...
Wednesday, April 24, 2013 at 4:04pm

Science-Greenhouse Effect
It's me again....I meant to have said: shortfalls in. Missed out the space :)
Tuesday, April 23, 2013 at 3:09pm

Geo math
Some flowers are being planted in a circular flower bed with a 10-foot diameter. If each flower requires 5 square feet of space, about how many flowers can be planted? What formula do I use to solve this?
Tuesday, April 23, 2013 at 1:45pm

Calc 2
a) find the partial derivatives of each, and just plug in 1 for x and 3 for y (values should be close to 0)/ b) in using the difference quotients, take the limit as h approaches infinity of both each derivative, plugging in 0.1 for x and y in each one. It's better that you...
Tuesday, April 23, 2013 at 12:45pm

Business Math
A Competitive Coup in the In-Flight Magazine. When the manager for market intelligence of AutoCorp, a major automotive manufacturer, boarded the plane in Chicago, her mind was on shrinking market share and late product announcements. As she settled back to enjoy the remains of...
Tuesday, April 23, 2013 at 9:56am

calculus
Let A be the region in the plane consisting of those points (x,y) such that 0≤y≤1−x^2. Rotate A around the x-axis in space. What is the volume of the resulting solid?
Tuesday, April 23, 2013 at 12:25am

Physics Eletric fields and coulomb's law)
Please, I need the development and correct answer for this problem. I would really appreciate it. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far ...
Monday, April 22, 2013 at 9:07pm

Physics
Calculate the magnitude of the magnetic field at a point 43.6 cm from a long, thin conductor carrying a current of 1.24 A. The permeability of free space is 1.25664 × 10^−6 T · m/A. Answer in units of T
Monday, April 22, 2013 at 11:15am

Physics (Electric fields and Coulomb's Law)
I need help with this question please. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion? _________ m Thank you
Sunday, April 21, 2013 at 11:13pm

Electric fields and Coulomb's law
Please, I need help with this question. An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. If the field meter reads 0.000000202 N/C, how far away is it from the ion? Answer:__________ m Thank you.
Sunday, April 21, 2013 at 7:18pm

calculus
6. The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) ...
Saturday, April 20, 2013 at 9:32am

Chemistry - electron configuration
Your notations are hard to read because you didn't space it properly. I have redone it below. Also, I think you should change the order, at least mentally, to what I show below. A) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 B) 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 C) 1s2 2s2 2p6 3s2 3p6 4s1 ...
Friday, April 19, 2013 at 10:56pm

calculus (gr 12)
The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) How ...
Friday, April 19, 2013 at 6:06pm

Grade 12 Calculus
The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) How ...
Thursday, April 18, 2013 at 7:03pm

simple PHYSICS
The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds?
Thursday, April 18, 2013 at 4:20am

calculus (gr 12)
The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) How ...
Wednesday, April 17, 2013 at 9:45pm

English
6.Isn't it a little (far-fetched selfseeking) to suggest that the pollution of our environment is mainly caused by creatures from outer space? far fetched 7.Unless the poor people of the country see some hope of improving their lives there will probably soon be a great ...
Wednesday, April 17, 2013 at 9:38pm

science
light trsavels at 3*10 m/s. an astrounaut shines a flash light in space. 4 hours later a martian sees a light from the astrounaut. how far away is mars from the astrounaut?
Wednesday, April 17, 2013 at 10:42am

Probability
Sample space is the set of all possible outcomes. If you pick one single marble from a bag filled with blue and yellow marbles, the only outcomes are Y=yellow marble, and B=blue marbles. So Ω = {Y,B}
Tuesday, April 16, 2013 at 8:47pm

Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
Tuesday, April 16, 2013 at 7:29pm

Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
Tuesday, April 16, 2013 at 6:19pm

Probability
If I have a bag filed with 6 marbles, 2 blue marbles, and 4 yellow marbles, and I had to pick one from the bag, what is my sample space?
Tuesday, April 16, 2013 at 6:18pm

Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the magnitude of the earth...
Tuesday, April 16, 2013 at 1:40pm

physics
Suppose you are in space can you decide whether you are in rest or motion
Tuesday, April 16, 2013 at 12:29pm

calculus (gr 12)
The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) How ...
Tuesday, April 16, 2013 at 12:15pm

physics
The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds?
Tuesday, April 16, 2013 at 11:54am

Physics :(( help please TT
The space shuttle had a top orbital speed of 8000 m/s and orbited in a circular orbit approximately 320 km above the earth's surface. How long was one orbit in seconds? Details and assumptions The radius of the earth is 6370 km.
Tuesday, April 16, 2013 at 3:37am

Grade 12 Calculus
6. The forward motion of a space shuttle, t seconds after touchdown, is described by s(t) = 189t − t^3 , where " is measured in metres. a) What is the velocity of the shuttle at touchdown? b) How much time is required for the shuttle to stop completely? c) ...
Monday, April 15, 2013 at 6:38pm

Physics
An electric space heater draws 15.5 A from a 120 V source. It is operated, on the average, for 4.0 h each day. (b) How much energy in kWh does in consume in 30 days? (c) At 11 per kWh, how much does it cost to operate the heater for 30 days?
Monday, April 15, 2013 at 12:48pm

Physics
11-098-satellite_and_junk.jpg A spherical satellite of radius 4.6 m and mass M = 195 kg is originally moving with velocity vsatellite,i = < 3000, 0, 0 > m/s, and is originally rotating with an angular speed ?1 = 2 radians/second, in the direction shown in the diagram. A ...
Sunday, April 14, 2013 at 4:06pm

stats
Cushman and Wakefield accounting that the average annual rent for office space in Tampa was $17.63 per square foot. A real estate agent selected a random sample of 15 rental properties (offices) and found that mean rent was $18.72 per square foot and s= $3.64. At a= 0.05, test...
Saturday, April 13, 2013 at 10:06pm

computer science
I need help one how create a spreadsheet that will give an accurate launch profile for a vertical liftoff for the SpaceX Falcon 9 rocket. the information they give me is: •Start with a rocket with a mass, M1, moving with a speed, v1 •The rocket expels some small mass...
Saturday, April 13, 2013 at 6:37pm

Science URGENT~
1. Your ____ is your first line of defense against pathogens. (1 point) brain heart large intestine skin 2. Blood vessels help regulate your body's temperature. When it's cold, your blood vessels ____ to decrease blood flow and retain heat. (1 point) boil constrict ...
Thursday, April 11, 2013 at 9:57pm

Art.
Hey, These are the correct answers :) I got two wrong.. 1. This occurs when an animal, object, or idea is given human form or characteristics. (1 point) Unselected answer (0 pts) literalism Unselected answer (0 pts) symbolism Correct answer (1 pt) personification Unselected ...
Thursday, April 11, 2013 at 12:02pm

social studies
http://www.debate.org/opinions/do-the-ac​complishments-of-the-space-program-justi​fy-the-costs
Wednesday, April 10, 2013 at 9:33pm

GRAMMAR
Use lower case letters. Check the meaning of "deviced." Use punctuation at the end of the sentence. A space is needed.
Wednesday, April 10, 2013 at 9:00pm

Child day care management
1. At what age does exercise begin to result in strength in boys and girls? A. Between ages one and two B. Between ages three and four C. Between ages five and six D. Between ages six and seven 2. Athlete’s foot is an infection caused by A. dirt. C. allergic reaction. B...
Wednesday, April 10, 2013 at 8:36am

LIVING A HEALTHY LIFE
1. At what age does exercise begin to result in strength in boys and girls? A. Between ages one and two B. Between ages three and four C. Between ages five and six D. Between ages six and seven 2. Athlete’s foot is an infection caused by A. dirt. C. allergic reaction. B. ...
Wednesday, April 10, 2013 at 3:47am

Chemistry
The experimentally measured and generally accepted value for the molar volume of Na is about 23 cm3/mol. Which of the following best explains why the value calculated in Part B is significantly smaller than the measured values? Part B Answer 16.3 cm3/mol Which one would it be...
Monday, April 8, 2013 at 9:23pm

Math
I assume plants spread 2 3/8 in all directions, so the space between must be twice that, and for 20 feet.. number plants=20/(4 6/8)=20/(38/8)=160/38 you do it. I get 4 plants.
Monday, April 8, 2013 at 6:14pm

Math
A farmer is planting squash plants that need 2 3/8 feet to spread out. He has an area along a fence that is 20 feet long. Round the amount of space the squash plants need to the nearest 1/2 foot. How many squash plants can the farmer grow along the fence?
Monday, April 8, 2013 at 5:37pm

Physics
I am not an expert. I am a very rusty amateur, so this has to be checked. But I think the difference in light travel distance you are talking about measuring is 2mm. That is, 1mm out into some 1mm deep feature in the object, and 1 mm back. Plus the 2 km there and back. But ...
Monday, April 8, 2013 at 5:32pm

math
an oak tree grows 500 meters north of the bottom of a rectangular park. The oak tree takes up a space of a circular area with a radius of 2.5 meters .The center of the tree is 24 meters from the left side of the park .The park is 200 meters wide and has a length of 1300 meters...
Monday, April 8, 2013 at 5:17pm

Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.20 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the magnitude of the earth...
Monday, April 8, 2013 at 3:20pm

FRENCHHHH
last space I think its que cete?
Monday, April 8, 2013 at 12:15pm

FRENCHHHH
conjugue les verbes a limparfait ou au passé compose guillame,quatorze ans,se rapelle son long sejour a l'hopital, quand il receivait la visite des animatuers de docteur clown,La premiere fois, j'ai cru(croire) qu'ils ______ (venir) d'une autre planete! ...
Monday, April 8, 2013 at 12:14pm

physics
A L=3 mile long conducting cable tethers a satellite to the International Space Station. The Cable moves through the Earth' magnetic field of about B=0.02 Gauss at a speed of v=8 km/sec. The cable points radially from the Space Station to the satellite. The ISS moves ...
Sunday, April 7, 2013 at 5:23am

child development
1. Which of the following is considered to be an observer error in a running record? A. Using words that describe but don't judge B. Interpreting as you observe C. Recording every detail with no omissions D. Using rich visual detail 2. Frequent and intense stress in ...
Sunday, April 7, 2013 at 1:47am

child development
The Child Development Checklist is an observation tool that A. includes space to record non-objective data. B. omits references to children's emotions. C. focuses on sequences of child development. D. can only be used by one observer for the same child.
Sunday, April 7, 2013 at 1:46am

child development
The Child Development Checklist is an observation tool that A. includes space to record non-objective data. B. omits references to children's emotions. C. focuses on sequences of child development. D. can only be used by one observer for the same child.
Sunday, April 7, 2013 at 1:45am

WRITING
I'll get you started -- Choosing a roommate is more difficult than ONE might think. People have different attitudes about sharing a living space. These attitudes are often based on THEIR notions of cleanliness, ownership, and personal space. Some folks don’t mind lots...
Saturday, April 6, 2013 at 8:39pm

WRITING
I need help revising for pronouns towards this paragraph: Choosing a roommate is more difficult than they might think. People have different attitudes about sharing a living space. These attitudes are often based on our notions of cleanliness, ownership, and personal space. ...
Saturday, April 6, 2013 at 8:11pm

Quantum Physics
And, of course <p> = 0, because the fact that psi(x) is (or can be chosen to be a) real function of x, implies that the modulus squared of the momentum space wavefunction psi(p) is an even function of p. To see this, note that: psi(x) = 1/sqrt(2 pi hbar) Integral from ...
Saturday, April 6, 2013 at 3:03pm

epidemiology
In a study examining associations between level of education and response to the Philadelphia Public Health Department’s emergency messages to “shelter in place” (meaning stay in your home) following an accidental release of chemicals from the Sunoco refinery in...
Friday, April 5, 2013 at 5:28pm

UNDERSTANDING OBSERVATION AND BEHAVIOR
3. The Child Development Checklist is an observation tool that A. includes space to record non-objective data. B. omits references to children's emotions. C. focuses on sequences of child development. D. can only be used by one observer for the same child. 4. Which of the ...
Friday, April 5, 2013 at 12:07am

UNDERSTANDING OBSERVATION AND BEHAVIOR
The Child Development Checklist is an observation tool that A. includes space to record non-objective data. B. omits references to children's emotions. C. focuses on sequences of child development. D. can only be used by one observer for the same child.
Friday, April 5, 2013 at 12:05am

math
A baseball diamond has 90 ft. between each base. A softball diamond has 60 ft between each base. How many yards longer is the space between bases on a baseball diamond than a softball diamond?
Thursday, April 4, 2013 at 6:47pm

Help? Math
I just realized what the teacher wants (I think). put along the horizontal axis the movies seen(from 0 to 5) marks equally spaced. I would do in .5 increments (as in 0-.499, .5-1.0, 1.0-1.499, etc) then, on the vertical axis, mark in that increment how many countries fell into...
Thursday, April 4, 2013 at 2:32pm

algebra
For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17...
Thursday, April 4, 2013 at 10:02am

mechanics
A space aircraft is launched staight up.The aircraft motor provide aconstant acceleration for 10 second ,then it stops.the aircraft's altitude 15 second after launch is 2 km.ignore air friction.what is the acceleration and the maximum speed reached in km/h?
Thursday, April 4, 2013 at 5:34am

Science
Mass measures the amount of matter in an object. Volume is the amount of space something takes up. Density is the amount of matter is in a certain volume. D=M/V
Wednesday, April 3, 2013 at 9:30pm

Science
Define mass How much something weighs Define volume The amount of space in something Define density and show the formula for calculating density The amount of mass or matter in an object D=M/V
Wednesday, April 3, 2013 at 6:53pm

trig
Indoor steps generally are steeper and have smaller landings. A staircase has a 9 inch vertical rise per step to get to the second floor of a house. If the angle of elevation is 36.8 degrees and there are 16 feet of horizontal space total for each of the landings combined, ...
Wednesday, April 3, 2013 at 1:34pm

Algebra 1B
A painter can use the formula A=2/3bh to estimate the Area of space under the parabola, where b is the length of the base and h is the height from the base to the vertex. Calculate the area, in square feet under each arch.
Tuesday, April 2, 2013 at 6:32pm

physics
A rocket ship at rest in space gives a short blast of its engine, firing 26 kg of exhaust gas out the back end with an average velocity of 182 m/s. What is the change in momentum of the rocket during this blast?
Tuesday, April 2, 2013 at 1:38pm

algebra
For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17...
Tuesday, April 2, 2013 at 12:00pm

physics
A space aircraft is launched straight up. The aircraft motor provides a constant acceleration for 10seconds, then the motor stops. The aircraft's altitude 15seconds after launch is 2km. Ignore air friction. Determine (i) the acceleration, (ii)the maximum speed reached in ...
Tuesday, April 2, 2013 at 9:05am

machanics
A space aircraft is launched straight up.The aircraft motor provides a constant acceleration for 10 seconds,then the motor stops.The aircraft's altitude 15 seconds after launch is 2 km.ignore air friction .what is the acceleration,maximum speed reached in km/h and the ...
Tuesday, April 2, 2013 at 6:21am

physics
A test charge of +3.00 10-6 C experiences a downward electrostatic force of 15 N when placed at a certain point in space. What are the magnitude and direction of the electric field at this point?
Monday, April 1, 2013 at 3:12pm

algebra
y= -x^2-12x+28 A painter can use the formula A=2/3bh to estimate the area of space under the parabola. Calculate area in square ft under each arch ~ if there are 8 arches to be painted how many square ft must be painted ~ if 1 gallon paints 200 square ft , how many gallons ...
Sunday, March 31, 2013 at 8:30pm

Math
since the boxes may be oriented so that each dimension of the space is divisible by a dimension of the boxes, we can just divide the volumes: 15*9*24 / 3*2*.5 = 1080
Saturday, March 30, 2013 at 12:17am

Math
How many cartons measuring 3 feet by 2 feet by 6 inches can be stored in a space that is 15 feet by 9 feet by 24 feet. Assume no space is wasted. Explain your answer.
Friday, March 29, 2013 at 11:28pm

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

Physics
At the train station, you notice a large horizontal spring at the end of the track where the train comes in. This is a safety device to stop the train so that it will not plow through the station if the engineer misjudges the stopping distance. While waiting, you wonder what ...
Tuesday, March 26, 2013 at 7:43pm

Physics
At the State Fair you see people trying to win a prize at a game booth. They are sliding a metal disk shaped like a puck up a wooden ramp so that it stops in a marked zone near the top of the ramp before sliding back down. You estimate that you can slide the 'puck' at ...
Tuesday, March 26, 2013 at 7:42pm

Physics
Your artist friend's new work is a simple, high-impact kinetic sculpture called 'Destruction.' A 200-kg steel block is hung from the ceiling by an 8-foot-long rope. A second rope is attached to the side of the block. The other end of this second rope is attached to...
Tuesday, March 26, 2013 at 7:38pm

physics
As part of a fundraiser, you want the new dean to bungee jump from a crane. The jump will be made from 44 m above a 2.5 m deep pool of Jello. A 30 m long bungee cord would be attached to the dean's ankle. You must convince the dean that your plan is safe for a person of ...
Tuesday, March 26, 2013 at 7:37pm

Science
14.7 psi is the air pressure at the earth's surface. That is the pressure exerted by a 1-sq-in column of air reaching up to space. The earth's atmosphere is about 300 miles thick. That air presses down everywhere with a weight of 14.7 pounds on every square inch of the...
Monday, March 25, 2013 at 5:17pm

Science help
Which of the following technologies is a result of space research and development? A.improved pacemakers B. equipment to allow police to change traffic signals C. cochlear implants to help deaf people hear D. all of the above
Monday, March 25, 2013 at 3:30pm

science
With no friction, it will keep pace with the spacecraft, unless the spacecraft changes course or speed, or some other bit of space junk impedes its progress.
Monday, March 25, 2013 at 2:56pm

Chemistry
Your space ship has docked at a space station above Mars. The temperature inside the space station is a carefully controlled 24oC at a pressure of 689 mm Hg. A balloon with a volume of 426 ml drifts into the airlock where the temperature is -88oC and the pressure is 0.160 atm...
Monday, March 25, 2013 at 2:37pm

english
Choose an essay or a short story to read. Then answer the following questions in the space provided. 10.What is the title of the story essay? 11.Who wrote it? 12.Whom is the story about? (Identify the main characters [or, if an essay, the subject discussed].) 13.hat happens in...
Monday, March 25, 2013 at 2:17pm

science
What will eventually occur if in deep space an astronaut's wrench is outside the spacecraft moving with the same velocity as the spacecraft?
Sunday, March 24, 2013 at 6:18pm

Earth and Space Science
A galaxy is millions of light years away o.O
Sunday, March 24, 2013 at 8:18am

Earth and Space Science
I agree with Shaniqua's order of size. The heads of comets are smaller than planets, but comparable to asteroids. If you include the length of their visible tails, comets are larger than planets. The tails are nothing but dust and gas, however. You only see them when the ...
Sunday, March 24, 2013 at 6:37am

Earth and Space Science
Largest to smallest is: a, b, e, d, c, f. It really depends on how big the comets and planets and moons are, though. :)
Sunday, March 24, 2013 at 5:32am

Earth and Space Science
Moon is pretty close.
Saturday, March 23, 2013 at 11:23pm

Earth and Space Science
which is closer to earth a moon or galaxy?
Saturday, March 23, 2013 at 10:09pm

Earth and Space Science
f, c, d, e, b, a
Saturday, March 23, 2013 at 10:03pm

Earth and Space Science
Put the following astronomical bodies in order from largest to smallest: a. Universe b. Galaxy c. Moon d. Planet e. Solar System f. Comet
Saturday, March 23, 2013 at 9:47pm

Algebra (word problems)
Your value of a should be -1 , or else your frog would jump up into space. Assuming he starts at the origin, (I don't have your diagram), the equation would be height = -(x -4.5)^2 + 3 2nd: I am going to place the centre of the doorway at (0,0) so the equation is y = ax^2...
Friday, March 22, 2013 at 5:26pm

Math?
Okay. This is the question: If 130.943 g of a liquid occupy a space of 135.0 ml, what is the density of the liquid in g/cm3? And this is my answer: 0.9699481g/ml 481 is repeating
Friday, March 22, 2013 at 2:25pm

meaning
Jacy taught dancing and demonstarted ballet postions. What does position refer to in that sentence? A] dances for ballet B] the space occupied by something C] particular stances in ballet I think it's D?
Thursday, March 21, 2013 at 8:29pm

Math
Find the sample space. a Bag contains 4 marbles: one each of red, blue, green and violet. Two marbles are drawn from the bag. assume that the first marble is not put in the bag before drawing the second marblle
Thursday, March 21, 2013 at 3:51pm

chemistry
Interesting question and interesting point. I think the problem is one of definition. Phase is defined as a region of space in which all of the physical and chemical properties are the same. That definition means oil and H2O are separate phases since the properties (density, ...
Tuesday, March 19, 2013 at 2:24pm

Physics
Three Point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. As the drawing shows(a) The charge at any one corner experiences forces from the charges at the other corners. Do the individual ...
Tuesday, March 19, 2013 at 7:21am

space science?
Antares
Monday, March 18, 2013 at 9:15pm

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