Sunday
December 28, 2014

Homework Help: Science: Outer Space

Recent Homework Questions About Outer Space

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Basic programming principles
Piet earns R20 per hour, if he works more than 30 hours then he receives an extra R8 per hour, will the following statement be correct or incorrect (only type in correct or incorrect at your answer space)If hoursworked > 30 then Salary = salary + (hoursworked – 30) + 8
Wednesday, October 1, 2014 at 10:48am

Basic programming principles
Piet earns R20 per hour, if he works more than 30 hours then he receives an extra R8 per hour, will the following statement be correct or incorrect (only type in correct or incorrect at your answer space) If hoursworked > 30 then Salary = salary + (hoursworked – 30) + 8
Wednesday, October 1, 2014 at 10:00am

Physics
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3360-kg space tug and a 6300-kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 430 m ...
Tuesday, September 30, 2014 at 1:16pm

Geometry
A swimming pool is to be constructed in the space of partially overlapping identical circles. Each of the circles has a radius of 9 m, and each passes through the center of the other. Find the area of the swimming pool.
Sunday, September 28, 2014 at 1:57am

Math
Determine whether the given equation is a circle, a point, or a contradiction (no real graph). x^2 + y^2 - 2 x - 16 y + 52 = 0 . The equation is a . (Enter "circle", "point", or "contradiction" in the answer space without quotes.)
Wednesday, September 24, 2014 at 6:22pm

Child care
6. Local, state, and provincial governments may have specific regulations that apply to the physical space in a day care center. A typical requirement in these regulations is a minimum of _______ square feet of usable play space for each child. A. 35 (B). 18 C. 10 D. 24
Tuesday, September 23, 2014 at 7:02pm

Child care
You're attempting to determine the amount of usable floor space in your day care facility. Which one of the following areas can you include in your calculation? A. Toy shelves in Classroom A B. Bathroom adjacent to Classroom A (C). Hallway in the classroom area D. Kitchen ...
Tuesday, September 23, 2014 at 6:52pm

CHECK PLEASE
11.abhor : detest 12.infraction 13.resolute 14.infringe 15.abound 11.Find the pair of words that has the same kind of relationship as the numbered pair. abscond : flee :: A. ascertain : forget B. concise : cut C. discern : hide D. abhor : detest 12.In India, mistreatment of ...
Tuesday, September 23, 2014 at 10:03am

physics
One of the methods used to train astronauts for the effects of "zero gravity" in space is to put them in a specially equipped plane which has been stripped of seats and fitted with padded walls. The pilot then takes the plane up to an altitude of typically 8600 ...
Monday, September 22, 2014 at 11:23pm

Physics
The mass of the Earth=Mg=5.97x10^24 kg. The radius of the Earth=RE= 6.38 x10^6 m. A) What is the weight of the 75 kg person? B) Determine the acceleration due to gravity aboard a space shuttle at an altitude of 400km.
Sunday, September 21, 2014 at 9:25pm

MIS (java)
Download A04.txt and copy it into a new Eclipse project named {NetID}A04. Rename (refector) {NETID}A03.java to {NETID}A04.java Modify the return type of magicEightBallIf and magicEightBallCase so they return a String instead of printing the result. Create a static method named...
Sunday, September 21, 2014 at 8:00pm

math
What does each space between the numbers represent?
Friday, September 19, 2014 at 11:32am

earth space science
What include things like temperature, precipitation and humidity
Thursday, September 18, 2014 at 7:42pm

physics
The speed of all electromagnetic waves in empty space is 3.00 × 108 m/s. What isthe wavelengthofradio waves emit- ted at 97.9 MHz? Answer in units of m
Thursday, September 18, 2014 at 7:13pm

Physics
1. A cannon mounted on the back of a ship fires a 50.0 kg cannonball in the horizontal direction at a speed of 150 m/s. If the cannon and ship to which it is firmly attached have a mass of 4.00 x 103 kg and are initially at rest, what is the speed of the ship just after ...
Thursday, September 18, 2014 at 6:20am

Physics
On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an initial vertical velocity of about v1y = 2.4 m/s and rise to a height of about h = 0.24 m above the point where he first loses contact with the ground. On the ...
Wednesday, September 17, 2014 at 8:38pm

Physics
(c) On Earth a fit astronaut without a space suit and life support pack can leap straight up and leave the ground with an initial vertical velocity of about v1y = 2.4 m/s and rise to a height of about h = 0.24 m above the point where he first loses contact with the ground. On ...
Wednesday, September 17, 2014 at 1:09pm

REACTION KINECTICS
The autocatalytic reaction of A to form Q is one that accelerates with conversion. An example of this is shown below: A+Q~Q+Q However, the rate decreases at high conversion due to the depletion of reactant A. The liquid feed to the reactor contains 1 mol L-] of A and 0.1 mol L...
Wednesday, September 17, 2014 at 12:39am

Physics
1. An 80.0-kg astronaut is floating at rest a distance of 10.0 m from a spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it into space away from the ship with a speed of 15 m/s. At what speed ...
Tuesday, September 16, 2014 at 9:43pm

Curriculum
_______ awareness describes the perceptual motor skills most closely associated with understanding how the child's own body is in space (up/down, on/off). A. Balance B. Figure-ground C. Directional D. Temporal my answer is c.
Tuesday, September 16, 2014 at 7:43pm

Art
Which element in the image The Annunciation by Jan van Eyck, creates an emphasis on the female figure? A. Form B. Texture C. Space D. Color Is the answer D?
Monday, September 15, 2014 at 4:33pm

Physics
Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade 10^22J?
Sunday, September 14, 2014 at 5:01pm

Physics
Calculate the energy needed to accelerate a spaceship of mass 10,000 kg to a speed of 0.3c for intergalactic space exploration. Compare with the projected energy usage of the Earth in a decade~10^22J? well i don't know how to start the problem
Sunday, September 14, 2014 at 4:30pm

Physics
1. An 80.0-kg astronaut is floating at rest a distance of 10.0 m from a spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it into space away from the ship with a speed of 15 m/s. At what speed ...
Thursday, September 11, 2014 at 4:09am

8th grade math
on a recent space shuttle mission the astronauts traveled 105,000 miles during the first 3 days of their mission. this distance was 5/8 of the total distance they would travel. what was the total distance the astronauts would travel?
Tuesday, September 9, 2014 at 7:16pm

Math
17 0 -4 33 -11 -24 Place the numbers from the list in the appropriate space in the second column and compute your score 1/4 point for each natural number 17, 33. Score:1/2 3 points for each odd integer 17,0,3,-11. Score 12 1/2 point for each whole number less than 20 17,0 ...
Monday, September 8, 2014 at 5:43pm

Physics
What electric field strength would store 17.5J of energy in every 9.00mm3 of space?
Sunday, September 7, 2014 at 9:55pm

statistics
Define each of the following probability terms for the scenario of determining the probability that when a couple has 3 children, they will have exactly 2 boys. Assume that boys and girls are equally likely and that the gender of any child is not influenced by the gender of ...
Saturday, September 6, 2014 at 9:43pm

Physics
For any given quadrupole, let the charges be +q, −q, +q, and −q at the corners of the square, and l be the side of the square. Calculate approximately the electric potential and the electric field far away from the quadrupole, IN THE THREE-DIMENSIONAL SPACE. You ...
Thursday, September 4, 2014 at 3:48pm

algebra
How do I get the write out the problem for : The sample space is orange, purple and white. If P(orange)=2/5 and P(purple)=3/10, what is P(white)? I have written 2/5.3/10=6/15 2/5
Wednesday, September 3, 2014 at 6:17pm

geography
This reflects some heat back into space and traps some heat near the earth.
Monday, September 1, 2014 at 12:55am

Science
A.) A runner is jogging at a steady 6.7 km/hr. When the runner is 3 km from the finish line, a bird begins flying from the runner to the finish line at 20.1 km/hr (3 times as fast as the runner). When the bird reaches the finish line, it turns around and flies back to the ...
Thursday, August 28, 2014 at 11:13pm

English!!!
Identify the main idea of this paragraph: This ship is carrying kala fever serum to Group One on Woden. Their own supply was destroyed by a tornado. Group Two-the crew your brother is in-is eight thousand miles away across the Western Sea and their helicopters can't cross ...
Wednesday, August 27, 2014 at 3:18pm

Physics
02. Comic-strip hero Superman meets an asteroid in outer space and hurls it at 800 m/s, as fast as a bullet. The asteroid is a thousand times more massive than Superman, yet in the comic strip, he remains stationary after releasing the asteroid. Say, his mass is 107 kg, what ...
Monday, August 25, 2014 at 10:20pm

Honors Physics
Give some examples of applications that have resulted from work done by physicists on the exploration of space.
Sunday, August 24, 2014 at 10:59pm

Math
A cabinet has shelves that are 12 1/2 in. apart. On one shelf, Katherine stacked a CD player that is 4 5/8 in/ high on top of an amplifier that is 6 3/4 in. high. How much space was left above the CD player? I got 1 1/4; I added 6 3/4 and 4 5/8 and got 11 2/8. Then I ...
Sunday, August 24, 2014 at 3:37pm

math
I need help with just two questions. Can you help me with them please? Thank you so much! 1. School Materials, Inc., packs 1-centimeter cubes in boxes that are 10 centimeters long, 12-centimeters wide, and 8 centimeters high. A carton holds 2 dozen boxes of cubes with no space...
Friday, August 22, 2014 at 10:57am

science
In the space is there any aliens?
Tuesday, August 19, 2014 at 9:55am

Environmental Science
Answer the questions about the following processes in the space provided below. You only need to indicate a process by its number. For each question list as many processes as apply. Process 1: 6 CO2 + 6 H2O → C6H12O6 + 6 O2 Process 2: C6H12O6 + 6 O2 → H2O + 6 CO2...
Monday, August 18, 2014 at 7:06pm

Physics
It has been suggested that cylinders rotating about their long axis with dimensions 19 km long and 6.9 km in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ...
Thursday, August 14, 2014 at 12:28am

Algebra
Algebra Word Problems: 1. The length of the floor of a one-storey building is 14 feet longer than its width. The building has 1,632 square feet of floor space. Write a quadratic equation for the area of the floor in terms of w. Find the length and width of the floor. 2. A ...
Monday, August 11, 2014 at 11:10pm

Teaching in Early Childhood Programs,
Trey is a four-year-old with Down syndrome in your class. To support him in cleaning up his space after snack, which of the following should you avoid doing? A. Repeat expectations, such as "Your napkin goes in the trash." B. Conceal your feelings about the ...
Sunday, August 10, 2014 at 8:07pm

Teaching in Early Childhood Programs,
Trey is a four-year-old with Down syndrome in your class. To support him in cleaning up his space after snack, which of the following should you avoid doing? A. Repeat expectations, such as "Your napkin goes in the trash." B. Conceal your feelings about the ...
Sunday, August 10, 2014 at 7:56pm

Geometry
Three different people are to be selected at random, and each will be given one gift card. There is one card from Home Depot, one from Best Buy, and one from Red Lobster. The first person selected gets to choose one of the cards. The second person selected gets to choose ...
Saturday, August 9, 2014 at 9:19pm

Math
An architect has allocated a rectangular space of 275ft^2 for a square dining room and a 14ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Tuesday, August 5, 2014 at 8:31pm

college math
On August 4, 2007, NASA's Phoenix Mars Lander was launched into space to search for life in the icy northern region of the planet Mars; it touched down on Mars on May 25, 2008. As the ship raced into space, its jet fuel tanks dropped off when they were used up. The ...
Saturday, August 2, 2014 at 9:01pm

Math
An architect has allocated a rectangular space of 240ft^2 for a square dining room and a 14 ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Saturday, August 2, 2014 at 8:04pm

math
Four students at a computer fair competed against each other in a space-travel game. Chris scored 2/3 as many points as the winner Pat. Rich scored 1/2 as many points as Chris. Tome scored 100 points, which was 90 points less than Rich's score. How many points did Pat score?
Friday, August 1, 2014 at 11:51am

sciecne
A space station has the form of a hoop of radius R = 15 m, with mass M = 6000 kg. Initially its center of mass is not moving, but it is spinning slowly with angular speed ù0 = 0.0018 radians/s.Then a small package of mass m = 5 kg is thrown by a spring-loaded gun toward...
Wednesday, July 30, 2014 at 3:04pm

English 2
Revise the following paragraph until you can answer yes to each of the questions listed below. After you are finished, copy the revised paragraph in the space provided 1. Does the paragraph have a clear purpose, and does each sentence contribute to that purpose? 2. Is every ...
Wednesday, July 30, 2014 at 2:55am

Biology
A researcher collects high-resolution photographs of the Earth taken from outer space at annual intervals for the last decade. This data would be most useful to analyze which of the following? A. Human movement during crises B. Migration patterns of large whales C. ...
Saturday, July 26, 2014 at 3:23pm

geometry
A number is selected at random from the set {2, 3, 4, … 10}. Which event, by definition, covers the entire sample space of this experiment?
Thursday, July 24, 2014 at 9:11am

Science
A researcher collects high-resolution photographs of the Earth taken from outer space at annual intervals for the last decade. This data would be most useful to analyze which of the following? A. Human movement during crises B. Migration patterns of large whales C. ...
Tuesday, July 15, 2014 at 6:58pm

Chemistry
You are a work study student in our chemistry department. Amy, your supervisor has just asked you to prepare 250ml of 2.00M H2SO4 solution for tomorrow's undergraduate experiment. The Stock Solutions cabinet is under the Stockroom Explorer. You will find find a 2.50 liter ...
Thursday, July 10, 2014 at 9:12pm

statistics
In the old days, we could buy 8 inch floppies for our computers on which to store our favorite programs and data. But, the manufacturing ability was not that good back then and 1% of these 8 inch floppies sold had a bad sector or two on them which made them have less memory ...
Thursday, July 10, 2014 at 12:14am

chemistry
Insert a complete data table, including appropriate significant figures and units, in the space below. Also include any observations you made over the course of Part I. Aluminum Measured Mass of Metal 41.66 g Distilled Water Measurement 25 mL Distilled Water Temperature 25 C ...
Monday, July 7, 2014 at 4:37pm

college physics 2
steel train rails are placed end to end with space in between on a day where a temperature is 30 degrees. How much stress will be build if the temperature is increase to 150 degrees .assume that the original is 1.5m
Monday, July 7, 2014 at 2:12am

science
An object with mass 110 kg moved in outer space. When it was at location < 11, -35, -7 > its speed was 17.5 m/s. A single constant force < 230, 420, -230 > N acted on the object while the object moved to location < 16, -41, -13 > m. What is the speed of the ...
Sunday, July 6, 2014 at 2:31pm

Literature-Help me Ms. Sue
13. Regarding the difference between fiction and nonfiction which statement is most accurate? A. Writers of nonfiction have no need to express passionate opinion B. Nonfiction writers are free to embellish the facts. C. Nonfiction writers are more often free to move about in ...
Saturday, July 5, 2014 at 7:03pm

physics
An object with mass 110 kg moved in outer space. When it was at location < 11, -35, -7 > its speed was 17.5 m/s. A single constant force < 230, 420, -230 > N acted on the object while the object moved to location < 16, -41, -13 > m. What is the speed of the ...
Saturday, July 5, 2014 at 3:00pm

Literature-Help me Ms. Sue
1. When does the Narrative of Sojourner Truth take place? A. right after the Emancipation Proclamation. . Before the Civil War. C. During the Civil War. D. After the Civil War 2. In emphasizing the importance of individual thinking and basing one's beliefs on one's own...
Thursday, July 3, 2014 at 11:39pm

Stat 214
Three identical chips, each with 0 on one side and 1 on the other, are to be tossed simultaneously. A. writes the sample space. B. what is the probability of observing the sum of the face-up numbers to equal to 2? C. What is the probability of observing the sum of the face up ...
Monday, June 30, 2014 at 3:56pm

Stat
three identical chips, each with 0 on one side and 1 on the other, are the tossed simunltaneously. a. write the sample space
Monday, June 30, 2014 at 3:36pm

Probability
Four Coins are tossed. Describe the sample space S, probability of getting more tails than heads and probability of getting at least two heads.
Sunday, June 22, 2014 at 6:30pm

architecture
what is space? what does mean a space structure? what is spacer?
Saturday, June 21, 2014 at 3:29am

physics
In space, an object has only ONE force acting on it. Can the object have constant acceleration and/or a velocity of 0. Explain.
Friday, June 20, 2014 at 1:14pm

Astronomy
True or False? Galaxies are distributed randomly and approximately uniformly in space.
Wednesday, June 18, 2014 at 8:11pm

finite math
A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F= {6,7,}, and event G={9,10,11,12}. Assume that each outcome is equally likely. List the outcomes of F and G?. find P(F or G) by counting the number of ...
Wednesday, June 18, 2014 at 5:16pm

finite math
A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F= {6,7,}, and event G={9,10,11,12}. Assume that each outcome is equally likely. List the outcomes of F and G?. find P(F or G) by counting the number of ...
Tuesday, June 17, 2014 at 10:56pm

finite math
A probability experiment was conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F= {3,6,7,}, and event G={9,10,12}. Assume that each outcome is equally likely. List the outcomes of F and G. find P(F or G) by counting the number of ...
Tuesday, June 17, 2014 at 1:42pm

math
Mr. Simon landscapes new houses for a building contractor. He charges by the square meter of yard space plus a setup fee. He billed the contractor $2,150 for a 400-square- meter yard and $1,650 for a 300-square-meter yard. Write an equation in the form y = mx + b that can be ...
Tuesday, June 17, 2014 at 12:54pm

physics
An astronaut, mass 128.2 kg including spacesuit, pushes off from the International Space Station (mass 110 tons) with a speed of 1.2 m/s. What is the speed of the Space station in the opposite direction? Use 2 s f. for your answer
Monday, June 9, 2014 at 5:24pm

Lea408
can someone please tell me if I am right Like optical scanners, capacitance fingerprint scanners generate an image of the ridges and valleys that make up a fingerprint. But instead of sensing the print using light, the capacitors use electrical current. (Points : 1) True False...
Sunday, June 8, 2014 at 11:00pm

Physics
Futurists project large space stations which would rotate so as to use centripetal acceleration to simulate gravity. The outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts ...
Sunday, June 8, 2014 at 4:14pm

Physics
An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of for 3.90 s, exhausting a negligible mass of fuel relative to the 95,000-kg mass of the shuttle. (a) What is the impulse of the force for this 3.90 s? (b) What is the shuttle’s change in...
Saturday, June 7, 2014 at 5:57pm

English
What is in the classroom? 1. There is a blackboard in the classroom. 2. There are lots of lockers in the classroom. 3. There are chairs and desks in the classroom. 4. There are many school bags in the classroom. Good job! What else can we see in the classroom? 5. There is a ...
Saturday, June 7, 2014 at 12:53am

Science
Identify the benefits that your space mission might provide for modern society. Explore the possibility of connecting your space mission with satellites that are already gathering information as they orbit Earth. I don't understand what does this mean?
Thursday, June 5, 2014 at 6:23pm

English
Which of the following organizational patterns would be most effective for writing about the benefits of continuing government assistance for the U.S. space program? (1 point) chronological order order of importance compare and contrast argument and support<----
Thursday, June 5, 2014 at 1:51pm

science
An unsecured astronaut is floating in deep space. He switches on a hand held drill. The drill bit begins rotating clockwise with high angular velocity. Describe what happens to the astronaut- drill system and explain why.
Thursday, June 5, 2014 at 3:35am

Physics
A small charge that has lost 5.0 X 10^3 electrons and has a mass of 2.0 x 10^-6 kg experiences an acceleration of 15ms^2 when placed at a point P in space. Determine the magnitude and direction of the electric field at P
Wednesday, June 4, 2014 at 6:19pm

Math
A bag contains the two tiles shown. One tile is drawn at random from the bag. The tile is returned to the bag and again a tile is drawn from the bag. What is the sample space for this experiment? A. {L, M} B. {LL, LM, MM} C. {LL, LM, ML, MM} D. {L}
Monday, June 2, 2014 at 11:05am

Algebra Math
Please put this into an equation problem= Chuck has 8.25 gigabytes on his hard drive. Chuck wants to load 3 movies in the drive that take up 3.6,2.8, and 4.1 gigabytes each. To make room for the movies, Chuck plans to delete a 2.3 gigabyte movie. Does Chuck have enough space ...
Monday, June 2, 2014 at 6:51am

Language Arts CHECK ANSWERS
PLEASE CHECK MY ANSWERS 1. Adolescence is the period of life that follows A. infancy. B. adulthood. C. childhood.*** 2. Students can feel overwhelmed by A. a day off. B. an easy test. C. a lot of homework.*** 3. Everyone admired the grandeur of A. the rose garden.*** B. the ...
Wednesday, May 28, 2014 at 3:22pm

Physics
A 97kg astronaut and a 1100kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.13m/s directly away from the shuttle. Seven and a half seconds later the astronaut comes into contact with the shuttle. What was the...
Tuesday, May 27, 2014 at 7:54pm

English III HELP ME PLEASE
Please tell me which ones are wrong and the corrections The War of the Worlds by H. G. Wells [1898] But who shall dwell in these worlds if they be inhabited? Are we or they Lords of the World? And how are all things made for man?- KEPLER (quoted in The Anatomy of Melancholy) ...
Tuesday, May 27, 2014 at 4:40pm

English III
The War of the Worlds by H. G. Wells [1898] But who shall dwell in these worlds if they be inhabited? Are we or they Lords of the World? And how are all things made for man?- KEPLER (quoted in The Anatomy of Melancholy) BOOK ONE: THE COMING OF THE MARTIANS CHAPTER ONE: THE EVE...
Tuesday, May 27, 2014 at 3:20pm

English III
The War of the Worlds by H. G. Wells [1898] But who shall dwell in these worlds if they be inhabited? Are we or they Lords of the World? And how are all things made for man?- KEPLER (quoted in The Anatomy of Melancholy) BOOK ONE: THE COMING OF THE MARTIANS CHAPTER ONE: THE EVE...
Tuesday, May 27, 2014 at 10:22am

Essay
The War of the Worlds by H. G. Wells [1898] But who shall dwell in these worlds if they be inhabited? Are we or they Lords of the World? And how are all things made for man?- KEPLER (quoted in The Anatomy of Melancholy) BOOK ONE: THE COMING OF THE MARTIANS CHAPTER ONE: THE EVE...
Tuesday, May 27, 2014 at 10:15am

English III
The War of the Worlds by H. G. Wells [1898] But who shall dwell in these worlds if they be inhabited? Are we or they Lords of the World? And how are all things made for man?- KEPLER (quoted in The Anatomy of Melancholy) BOOK ONE: THE COMING OF THE MARTIANS CHAPTER ONE: THE EVE...
Tuesday, May 27, 2014 at 10:05am

Algebra, Need help with last part.Thank you
A single card is selected from an ordinary deck of cards. The sample space is shown in the figure below. Find the probabilities. (Enter the probabilities as fractions.) P (two of hearts0 I got 1/52 correct P ( two)I got 4/52 correct P (heart)I am not sure.
Monday, May 26, 2014 at 11:38pm

geometry math help
"the inside of a carton is measured and is found to be width of 40cm, length 60cm and depth 30 cm. it is to be packed 2 layers deep with cylindrical tins that have a radius of 5cm and height of 15cm (outside measurements)." a) show that 48 tins can be packed into the...
Monday, May 26, 2014 at 4:06am

Physics
20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear expansion coefficient of 19 × 10^-6/C°. 19.93 cm 19.69 cm 19.50 cm 19.09 cm
Friday, May 23, 2014 at 8:48am

Chemistry
The mechanism for the reaction described by No2+CO--->CO2+NO is suggested to be (1)2NO2--->NO3+NO (2)NO3+CO--->NO2+CO2 Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the production of CO2(g) and enter it in the space below. rate of...
Friday, May 23, 2014 at 12:43am

Physics -- check answers please
The earth's magnetic field a) is slightly off centre compared to the Earth's rotational axis of rotation b) has its magnetic south pole at the geographic north pole c) attracts the north end of the compass needle to the geographic north pole d) all of the above Would ...
Wednesday, May 21, 2014 at 5:09pm

Physics Please help2
Two small insulating spheres with radius 7.00×10^−2m are separated by a large center-to-center distance of 0.565m . One sphere is negatively charged, with net charge -2.05μC , and the other sphere is positively charged, with net charge 4.10μC . The charge...
Wednesday, May 21, 2014 at 3:54am

Physics
The earth's magnetic field a) is slightly off centre compared to the Earth's rotational axis of rotation b) has its magnetic south pole at the geographic north pole c) attracts the north end of the compass needle to the geographic north pole d) all of the above 2. A ...
Tuesday, May 20, 2014 at 11:32pm

physics
Why do the passengers in high-altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?
Monday, May 19, 2014 at 2:00am

Math
5. Find the surface area of the cylinder to the nearest whole number. (1 point)1,659 in.2 898 in.2 5,862 in.2 2,959 in.2 6. Find the surface area of the pyramid shown to the nearest whole number. (1 point)1,540 m2 770 m2 396 m2 749 m2 7. Find the surface area of a conical ...
Saturday, May 17, 2014 at 12:38am

Physics
The space shuttle typically orbits 400 km above the earth's surface. The earth has a mass of 5.98 × 1024 kg and a radius of 6,380 km. A) How much would a 2000 kg part for the space station weigh when it has been lifted to that orbit in the shuttle's cargo bay? B...
Tuesday, May 13, 2014 at 5:17pm

Science: Please check answer
2. Once your rocket reaches space, the captain adjusts the speed. Your captain goes from 24,000 km/hr to 17,000 km/hr over 90 seconds. What is your acceleration? Beginning speed= 17,000km/hr Ending speed= 24,000 km/hr Time it took= 90/sec 17000-24000= -7000/90= -77.778km/hr ...
Monday, May 12, 2014 at 2:34pm

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