Tuesday
June 18, 2013

# Homework Help: Science: Outer Space

Recent Homework Questions About Outer Space

math
Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...
Tuesday, March 5, 2013 at 8:51am

logic
Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...
Tuesday, March 5, 2013 at 12:32am

Physics
Assume that in interstellar space the distance between two electrons is about 0.87 cm. The electric force between them are repulsive. Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental ...
Sunday, March 3, 2013 at 10:01am

calculus
Suppose you have 400 meters of fencing and you wish to enclose a rectangular space with two parallel partitions: What is the maximum total area of the enclosed space, in square meters?
Saturday, March 2, 2013 at 9:41pm

Physics
A space probe is carried by a rocket into outer space where it continues to move on its own in a straight line. What keeps the probe moving? Is the answer: the gravitation forces from diﬀerent stars and planets
Friday, March 1, 2013 at 8:08pm

DVC
use the inverse square law to show that in space shuttle territory, 200 kilometers above 94 percent of that at earths surface??
Friday, March 1, 2013 at 5:23pm

physics
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere. The delicate instruments on board completely fail at a height of 61.5 kilometers. What is the ...
Friday, March 1, 2013 at 4:17pm

Physics
A projected space station consists of a circular tube that is set rotating about its center (like a tubular bicycle tire) as shown in figure below. The circle formed by the tube has a diameter of about D = 1.28km. What must be the rotation speed (in revolutions per day) if an ...
Friday, March 1, 2013 at 12:12am

biology help plz?????????????????
Complete the following paragraph relating to the enzyme, β–galactosidase. This enzyme hydrolyses the disaccharide lactose to constituent monosaccharides, galactose and glucose. Drag and drop the appropriate words into the correct space. For white spaces in the ...
Thursday, February 28, 2013 at 9:11am

Electromagnetic spectrum
Some astronomical objects emit no visible light but are known through (blank?) and radio images; satellite observations (blank?) Earth's atmosphere help scientists study space at wavelengths that do not reach Earth's surface?
Tuesday, February 26, 2013 at 6:49pm

Physics
A 64.7 kg astronaut is on a space walk away from the shuttle when her tether line breaks. She is able to throw her 14.1 kg oxygen tank away from the shuttle with a speed of 7.45m/s to propel herself back to the shuttle. Assuming that she starts from rest (rela- tive to the ...
Tuesday, February 26, 2013 at 9:32am

Linear Algebra
Prove that If a vector space is of dimension n and a set of vectors spans V, then that set of vectors must be linearly independent.
Tuesday, February 26, 2013 at 9:01am

physics
For a safe re-entry into the Earth's atmosphere the pilots of a space capsule must reduce their speed from 2.6 104 m/s to 1.0 104 m/s. The rocket engine produces a backward force on the capsule of 1.7 105 N. The mass of the capsule is 3800 kg. For how long must they fire ...
Monday, February 25, 2013 at 9:08pm

Physics
A long, straight wire carrying a current of 317 A is placed in a uniform magnetic field that has a magnitude of 7.69 × 10-3 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by specifying its ...
Monday, February 25, 2013 at 5:03pm

Science
Proteins found on the outside of cells and viruses are called ____________ , these are used by the body to _______________ pathogens. antigens; help antibodies; make antigens; identify antibodies; reproduce Identify the response below that summarizes the correct sequence of ...
Friday, February 22, 2013 at 7:43pm

science
The moon is the earth's nearest neighbor in space the radius of the moon is approximately one quarter of the earth's radius and it's mass is one eightieth of the earth's mass.(a)calculate the weight of an object with a mass of 50.0kg on the surface of the moon...
Thursday, February 21, 2013 at 4:21pm

physics
the force required to maintain an object at a constant velocity in free space is eaqual to?
Wednesday, February 20, 2013 at 8:11pm

in what way is each of the following a marketing activity? a. the provision of sufficient parking space for custoemers at a suburban shopping mall b. the purchase by a clothing store of seven dozen sweaters in assorted sizes and colors. c. the inclusion of longer and more ...
Wednesday, February 20, 2013 at 1:49am

science
There are two identical, positively charged conducting spheres fixed in space. The spheres are 44.6 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0675 N. Then, a thin conducting wire connects the spheres, redistributing the charge on ...
Tuesday, February 19, 2013 at 9:54pm

science
There are two identical, positively charged conducting spheres fixed in space. The spheres are 44.6 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0675 N. Then, a thin conducting wire connects the spheres, redistributing the charge on ...
Tuesday, February 19, 2013 at 9:42pm

math
. A bag contains 3 marbles: a red one, a white one, and a green one. Suppose that two marbles are selected without replacement. (a) How many outcomes are in the sample space? List them (b) What is the probability that a red marble, and then a green marble (in that order) are ...
Tuesday, February 19, 2013 at 12:15pm

The arch is made up of equilateral triangular sections with double walls of steel 3 feet apart. Space between the walls is filled with reinforced concrete. Sizes of the sections vary, but a section at the bottom of the Arch has 54-foot sides and is 12 feet tall. About how much...
Monday, February 18, 2013 at 6:35am

Physics 212
Three equal point charges, each with charge 1.50\mu C , are placed at the vertices of an equilateral triangle whose sides are of length 0.300m . What is the electric potential energy U of the system? (Take as zero the potential energy of the three charges when they are ...
Thursday, February 14, 2013 at 7:49pm

Math
The school handy man measured the space needed for a new computer monitor in the science room at 20 3/4 inches. Which of these measures is NOT more precise? A. 20 1/2 inches B. 20 7/8 inches C. 20 15/16 inches D. 20 21/32 inches
Thursday, February 14, 2013 at 6:07pm

Math
The school handyman measured the space needed for a new computer monitor in the science room at 20 3/4 inches. Which of these measures is not more precise? A. 20 1/2 inches B. 20 7/8 inches C. 20 15/16 inches D. 20 21/32 inches
Thursday, February 14, 2013 at 5:48pm

science
how can space change your weight in space
Thursday, February 14, 2013 at 5:37pm

Physics
A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe, starting from rest, takes...
Wednesday, February 13, 2013 at 7:59pm

Physics
Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 25 m/s. (a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time...
Wednesday, February 13, 2013 at 6:55pm

Stats / Prob
Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.)
Wednesday, February 13, 2013 at 11:15am

physics
In a specific region of interstellar space the atomic composition of gaseous matter is 89.1% atomic hydrogen and 10.9% helium, the temperature is 27K and the pressure is 2.58x10^-15Pa. What is the density of matter in this region? What is the particle density?
Wednesday, February 13, 2013 at 8:27am

math
PHIL'S WIFE ROWENA, IS DECORATING A PORTION OF THE KITCHEN WALL BEHIND THE STOVE IN A MOSAIC MADE UP OF EQUAL NUMBERS OF BLACK,WHITE, AND RED TILES. THE SPACE MEASURES 6 FEET BY 2 FEET. THE MOSAIC TILES ARE 6 INCH SQUARES. HOW MANY RED TILES ARE REQUIRED?
Tuesday, February 12, 2013 at 8:25pm

Physics
A spacecraft of mass 2000kg, moves at a constant speed of 7800m.s- in space. the main engine switched on for 10s during which time the exhaust gases travels at 10 000m.s-. As a result of this, the craft travels at 8000m.s- after 10s. Calculate the mass of the exhaust gas.
Tuesday, February 12, 2013 at 3:09pm

PHYSICS
Two parallel plate capacitors are identical, except that one of them is empty and the other contains a material with a dielectric constant of 4.2 in the space between the plates. The empty capacitor is connected between the terminals of an ac generator that has a fixed ...
Tuesday, February 12, 2013 at 10:58am

physics
Imagine a spring floating in space. This spring has a very small length when it is unstretched. The spring constant for this spring is 4.2 N/m. Now place 2.6 μC charges on each end of the spring, and allow it to stretch until it reaches a new equilibrium. What is the new ...
Monday, February 11, 2013 at 2:48pm

standard deviation
If Professor Wilson found that the test scores of his students had a variance of 4.4, what is the standard deviation? Type a numerical answer in the space provided. Round your answer to the nearest tenth and do not type spaces in your answer.
Monday, February 11, 2013 at 9:45am

socology
what is the meaning of ventilation and space of structures
Sunday, February 10, 2013 at 11:31am

Math
A box contains a one-dollar bill, a five-dollar bill, a ten-dollar bill, and a twenty-dollar bill. Two bills are chosen in succession without replacement. Use a tree diagram to list the sample space for this experiment and then answer the following questions in fractions 1. ...
Friday, February 8, 2013 at 2:15pm

space science
What other challenges do you think there would be for engineers designing a spacecraft to travel to mercury?
Thursday, February 7, 2013 at 6:09pm

7 Science
If earth was larger what would happen to it's atmosphere? It would expand It would evaporate It would be sucked into space It would become more dense
Wednesday, February 6, 2013 at 2:12pm

Math
A photograph is 25 cm and 20 cm high. It must be reduced to fit a space that is 8 cm high. Find the width of the reduced photograph.
Monday, February 4, 2013 at 6:58pm

math
perform the following unit conversion. 296 0z= ___________ lb 18.5, 55.5, 37, 74 My Answer is 18.5 Perform the following conversion. 32kg= ______ lb 16,320,70.4,14.4 My Answer is 70.4 Some people feel that the ideal temperature for an office space is 72.0 F. What is the ...
Monday, February 4, 2013 at 2:02pm

college mathematics
Three people are to be selected at random, 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 will get to choose between the two remaining cards. The third person selected gets the third ...
Monday, February 4, 2013 at 10:30am

History
NASA, space shuttles, and the International Space Station are (a)all related to Cold War spy technology (b) joint scientific study and space exploration efforts (c) United States efforts to build anti missile defenses (d) belief in extraterrestrial life
Sunday, February 3, 2013 at 1:31pm

statistics
1. The scores on a standardized test for high school students are normally distributed with a population mean of 500 and a population standard deviation of 100. Use the empirical rule (0LI refers to this as the standard deviation rule.). Make sure you provide graphs for each ...
Sunday, February 3, 2013 at 12:26pm

math
Three people are to be selected at random, 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 will get to choose between the two remaining cards. The third person selected gets the third ...
Saturday, February 2, 2013 at 5:20pm

chemistry help !!!!!!!!!!!!!!!!
complete the following paragraph relating to the enzyme,b -galactosidase .this enzyme hydrolyses the disaccharide lactose to constituent monosaccharides ,galactose and glucose ,drag and drop the approprite words into the correct space. the enzyme ,B-galactosidase is added to a...
Saturday, February 2, 2013 at 5:11pm

chemistry help !!!!!!!!!!!!!!!!
complete the following paragraph relating to the enzyme,b -galactosidase .this enzyme hydrolyses the disaccharide lactose to constituent monosaccharides ,galactose and glucose ,drag and drop the approprite words into the correct space. the enzyme ,B-galactosidase is added to a...
Saturday, February 2, 2013 at 5:10pm

math
Three people are being selected at random, 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 will get to choose between the two remaining cards. The third person selected gets the third ...
Friday, February 1, 2013 at 6:48pm

Tree diagrams
Three people are being selected at random, 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 will get to choose between the two remaining cards. The third person selected gets the third ...
Friday, February 1, 2013 at 1:48pm

Intro to Computer Engineering
When solving 5x^2-50x+125=0, a space alien got x=8 for one of the two roots. What possible base could the alien be using? (Note: the coefficients are also in this base. That is 5,50,125 are all in this mystery base as well)
Thursday, January 31, 2013 at 1:29pm

ENG
I'm trying to write a paragraph with levels of generality for English. Here's what I have so far... I need help with grammar and punctuation... also does it make sense ? In the city of Carson, California there is a small house on Mesa Boulevard that is shared among ...
Tuesday, January 29, 2013 at 12:49am

writing
Edit mMath Autobiography Theresa V. Monteiro MAT 095 11:00 AM – 12:15 PM My name is Theresa and I am from Norwalk Connecticut. I’ve been living here for a year now. I moved to New London Connecticut to start my life. I’ve taken care of all my immediate family ...
Monday, January 28, 2013 at 11:59am

phy
A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the passenger Both ...
Monday, January 28, 2013 at 3:33am

math
Consider the experiment of choosing the top 7 cards from a shuﬄed deck in two ways: (a) Without replacement. 1. What is the sample space? 2. What is the probability that you get only red cards? (b) With replacement. 1. What is the sample space? What is the probability ...
Sunday, January 27, 2013 at 6:38pm

math
Suppose you roll a fair die 18 times. (a) What is the sample space? (b) What is the probability that each number from 1 to 6 appears exactly thrice? (c) What is the probability that the number 1 appears exactly twice, 3 appears exactly four times, and 5 appears exactly six times?
Sunday, January 27, 2013 at 6:36pm

math
A bag contains ﬁfty slips (small pieces of paper) with the numbers 1, 2, . . . , 50 written on them (One number on each slip!). Your friend writes down ten numbers from 1, 2, . . . , 50 on a sheet of paper, and then you draw—without replacement—twenty slips ...
Sunday, January 27, 2013 at 6:34pm

cultural diversity
NAEYC supports "third space" thinking as a desirable technique for use in A. stimulating children's right-brain processes. B.enhancing staff performance in the early childhood setting. C.Resolving conflicts, especially those involving cultural issues. D.training ...
Sunday, January 27, 2013 at 3:45pm

CALCULLUS
Question 2: If is the position of a particle in space at time .Find the angle between the velocity and acceleration vectors at time
Sunday, January 27, 2013 at 1:26am

science
Suppose you are an astronaut making a spacewalk outside the space shuttle. In your excitement about your walk,you use up all the gas in your reaction jet. How do you get back to the shuttle
Thursday, January 24, 2013 at 5:28pm

art
1. This occurs when an animal, object, or idea is given human form or characteristics. (1 point) literalism symbolism personification allusion 2. This occurs when you make reference to a well-known character, person, place, or event from life or literature. (1 point) ...
Wednesday, January 23, 2013 at 11:35pm

Earlychilodhood education
Which one of the following is probably NOT one of the reasons that circle times fail? A. The space was large and open. B. The songs were repeated daily. C. The time period lasted too long. D. The teacher read a chapter book, hoping to encourage the children to excel.
Sunday, January 20, 2013 at 9:47pm

Computer Harware
You have a single hard drive on your computer that contains two NTFS partitions. Your computer's operating system alerts you that the C partition is running out of room. Your E partition still has 75 gig of free space. What is the least intrusive way to alleviate this ...
Saturday, January 19, 2013 at 4:25pm

math
A refrigerator is 3 ft wide, 2 ft deep, and 6 ft high. How much floor space does it cover? What is the volume?
Tuesday, January 15, 2013 at 10:50pm

Outline
When you make an outline format, do you make spaces in between each topic. For example: A.topic a.detail b.detail i.detail of a detail i.detail of a detail DOES A SPACE GO IN BETWEEN THESE TWO TOPICS? B.topic.......and so on.
Tuesday, January 15, 2013 at 7:58pm

math
Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). a. Describe the outcomes of this experiment. List the elements of the sample space. b. What is the probability of obtaining a total of ...
Tuesday, January 15, 2013 at 7:23pm

physics
When an air capacitor with a capacitance of 400 (1 = ) is connected to a power supply, the energy stored in the capacitor is 2.05×10−5 . While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space ...
Tuesday, January 15, 2013 at 8:16am

physics
When an air capacitor with a capacitance of 400 (1 = ) is connected to a power supply, the energy stored in the capacitor is 2.05×10−5 . While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space ...
Tuesday, January 15, 2013 at 8:13am

Physics
Hi. I am Walter White. I am good at chemistry but suck at physics. Can you help me? ----------------------------------------​ Bob is traveling in a very fast space (v=0.8c) away from Alice, who is sitting still in an observatory watching him through a very good telescope...
Monday, January 14, 2013 at 6:44pm

1. This occurs when an animal, object, or idea is given human form or characteristics. (1 point) literalism symbolism personification allusion 2. This occurs when you make reference to a well-known character, person, place, or event from life or literature. (1 point) ...
Monday, January 14, 2013 at 6:08pm

Art
When looking at fabrics, an interior designer will focus on these characteristics. (1 point) shape and form space and color color, texture, and pattern proportion and emphasis
Monday, January 14, 2013 at 8:21am

put was or were in the space
Tom and Ben ( ) playing
Sunday, January 13, 2013 at 9:27pm

put was or were in the space
The girl has or have
Sunday, January 13, 2013 at 9:26pm

space science?
Which star is the densest: Antares, Spica, or Polaris?
Sunday, January 13, 2013 at 8:56pm

geometry
What do you do to figure out space in irregular shapes?
Saturday, January 12, 2013 at 11:55am

Physics
The International Space Station is 370 km above the Earth's surface (Re = 6378 km, Me = 5.98 x 10^24 kg). What is the linear velocity of the space station in m/s
Friday, January 11, 2013 at 12:44pm

physics
Spaceman Spiff's space box wights 60N. its engine exerts a +312N of force at lift-off. what is the acceleration when it lifts off
Thursday, January 10, 2013 at 10:19pm

Computer
Your computer is running a lot of services and applications when you log on that you never use. What implications can this mean for your computer? A. Unused services and applications take up valuable hard drive space. B. Your computer uses more power than it needs to. C. 32 ...
Thursday, January 10, 2013 at 12:22pm

English
The space shuttle was both a marvel and huge.
Thursday, January 10, 2013 at 8:06am

Please check and tell me what I got wrong and let me know the correct answer for the problem. Thanks. 1. Diarrhea can be caused by a change in diet and different minerals in the water. True (yes) False 2. Fusion produces less radioactivity than fission. True False (yes) 3. ...
Wednesday, January 9, 2013 at 6:31pm

Somebody check this plz..and thanks.
Please check and tell me what I got wrong and let me know the correct answer for the problem. Thanks. 1. Diarrhea can be caused by a change in diet and different minerals in the water. True (yes) False 2. Fusion produces less radioactivity than fission. True False (yes) 3. ...
Wednesday, January 9, 2013 at 4:23pm

Geometry
Check please? The path of the launching of a space shuttle can be described best as a Answer: Ray?
Wednesday, January 9, 2013 at 3:24pm

Cosmology
Which of the following phenomena is NOT a consequence of Special Relativity? - Mass-energy curves space-time - Length contraction - Time dilation - Mass can not travel faster than the speed of light
Tuesday, January 8, 2013 at 8:12pm

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...
Tuesday, January 8, 2013 at 10:37am

I need help..
1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...
Monday, January 7, 2013 at 4:48pm

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...
Monday, January 7, 2013 at 1:34pm

Science Help! I have a deadline!!
Match the following. 1. Rocky Mountain spotted fever 2. information about plants 3. eroded material 4. sun, wind, thermal 5. yellow fever and malaria 6. receives radio waves 7. major problem of underdeveloped nations 8. method of mountain formation 9. producer of oxygen a. ...
Monday, January 7, 2013 at 1:28pm

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...
Monday, January 7, 2013 at 1:23pm

Probability
Let S={s1,s2,s3,s4} be a sample space with probability distribution P, given by  P(s1)= 0.5, P(s2)= 0.25, P(s3)= 0.125, P(s4)= 0.125. There are sixteen possible events that can be formed from the elements of 'S'. Compute the probability ...
Saturday, January 5, 2013 at 3:39am

1. To pinpoint the absolute location of a place, geographers use (1 point) nearby landmarks. the Atlantic and Pacific oceans. the North and South poles. latitude and longitude. 2. What does the theme of movement help geographers to understand? (1 point) a location's ...
Tuesday, January 1, 2013 at 8:05pm

Financial management
ABC Construction and Leasing Company are interested in investing in the residential real estate market due to a relatively low interest rate environment. The Company appointed you to be in charge of the project feasibility study. You have just visited a 35-year old, well-...
Tuesday, January 1, 2013 at 4:44pm

maths
10. A company involved in the assembly and distribution of printers in concerned with two types – laser and inkjet. Assembly of each laser printer takes 2 hours, while each inkjet printer takes 1 hour to assemble, and the staff can provide a total of 40 person-hours of ...
Friday, December 28, 2012 at 1:42am

Math
The diameter of an atom is 2.3 x 10^ -8 centimeters. How many atoms can fit in a space .003 centimeters long, without exceeding it? Please help, thank you
Sunday, December 23, 2012 at 12:52pm

Need help with ~Social Stusies!
This is a practice so it's rather extensive but it's important i get the points for it so can u please check it thx! 1. To pinpoint the absolute location of a place, geographers use (1 point) nearby landmarks. the Atlantic and Pacific oceans. the North and South poles...
Saturday, December 22, 2012 at 7:20pm

Physics
A small spaceship whose mass is 1.5x10^3 kg (include-ing an astronaut) is drifting in outer space with negligible gravitational forces acting on it. If the astronaut turns on a 10 kW laser beam, what speed will the ship attain in 1.0 day because of the momentum carried away by...
Thursday, December 20, 2012 at 8:18pm

English 8R - Essay Check (plzzz read!)
Please check my English essay to see if it's good. I need help with my conclusion. There are similarities and differences of the activities that take place in both urban and rural setting. The activities that take place in both rural and urban setting of these two pieces. ...
Tuesday, December 18, 2012 at 9:09pm

Geometry
Tuesday, December 18, 2012 at 1:37pm

Math
Philip has 35 comic books. Of those comics, 2/10 take place in space. How many of Philip's comic books take place in space?
Friday, December 14, 2012 at 5:05pm

math
I have a diagram of an occupied building space within a larger building represented by 49 equal squares but no linear measures for the sides. The space is 120,000 sq ft. how can i estimate the lengths and widths of the floor space with just this information?
Thursday, December 13, 2012 at 3:23pm

english 3
Is this a parallel sentence? If so how can it be written more simpler. The space shuttle was both a marvel and huge.
Tuesday, December 11, 2012 at 2:12pm

A probability question i think
In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard? Thanks in advance for ...
Tuesday, December 11, 2012 at 11:17am

trigonometry
a space shuttle pilot flying toward the suez canal finds that the angle of depression on one end of the canal is 38.5 degree and the angle of depression to the other end is 52.75 degree. if the canal is 100.6 mi long, find the altitude of the space shuttle.
Monday, December 10, 2012 at 5:59am

CJS/250
Will someone please help me find a website to research the following questions? Write a 750- to 1,050-word paper discussing the relationship between private and public police. Is this relationship positive or negative? Provide specific examples to support your opinion. Discuss...
Sunday, December 9, 2012 at 11:32am

Physics
A rapidly changing magnetic field in any region of space induces a rapidly changing A.Magnetic field or B.Electric field? which in turn induces a rapidly changing A.Magnetic field B.Electric field?
Saturday, December 8, 2012 at 3:12pm

ECE
the child development checklist is an observation tool that? A.can only be used by one observer for the same child B.omits references to childrens emotions. C.includes space to record non-objective data. D.focuses on sequences of child development
Friday, December 7, 2012 at 2:13pm

English - ms. sue
ms. sue my sister write out story here it is. On Monday she looked in her mailbox, although she had no reason to expect a letter so soon. But there it was, a small, square car. She held it in her two hands, testing its weight. It was an invitation to an exhibition of drawings ...
Thursday, December 6, 2012 at 8:46pm

physics
Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the speed of a 94-kg ...
Thursday, December 6, 2012 at 3:34pm

The radius of Earth is 6,371 kilometers. A space shuttle orbits 315 kilometers above the surface of Earth. The space shuttle completes 240° of a revolution around Earth in one hour. What is the average speed of the space shuttle? Choose the closest answer. Please help both...
Wednesday, December 5, 2012 at 4:59pm

Physics
Figure 18-46 shows a hydraulic lift operated by pumping fluid into the hydraulic system. The large cylinder is 40 cm in diameter, while the small tube leaving the pump is 1.7 cm in diameter. A total load of 2500 kg is raised 2.2 m at a constant rate. Neglect pressure ...
Wednesday, December 5, 2012 at 8:26am

Physics
Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the speed of a 94-kg ...
Monday, December 3, 2012 at 9:42pm

science
Grapic organizer.show details that support this main ideals.thermal energy moves through solids liquid, gases and space
Monday, December 3, 2012 at 6:59pm

General Chemistry I
A sample of a compound containing only Br and O reacts with an excess of H2 to give 6.601 g of HBr and 3.919 g of H2O. What is the empirical formula of this compound? a. BrO b. BrO2 c. Br2O d. BrO3 e. None of the above I already know the answer is (e), but I am not entirely ...
Monday, December 3, 2012 at 2:50pm

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? ...
Monday, December 3, 2012 at 1:30am

wireless communications
what is the period of the space shuttle traveling at 250km above the earth and what is its velocity
Sunday, December 2, 2012 at 4:36pm

Physics
A 83.5 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 35.5 m behind the ship, at rest relative to the spaceship. The only way to return to the...
Sunday, December 2, 2012 at 2:19am

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

What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
Thursday, November 29, 2012 at 11:15pm

Chemistry
Astronomers have detected hydrogen atoms in interstellar space in the n=732 energy level. Suppose an atom in this excited state emits of a photon and undergoes a transition from n=732 to n=632. How much energy does the atom lose as a result of this transition? what is the ...
Thursday, November 29, 2012 at 11:11pm

What hazards do humans face when they are in space and what technologies have been developed in response to these hazards?
Thursday, November 29, 2012 at 11:03pm

A 2130-kg space station orbits Earth at an altitude of 455 km. Find the magnitude of the force with which the space station attracts Earth. The mass and mean radius of Earth are 5.98 × 1024 kg and 6370 km, respectively.
Thursday, November 29, 2012 at 10:56pm

space
i need help.i need info about if the sun gives the same amount of lite to both sides of the world.HELP ITS TOMMORROW
Thursday, November 29, 2012 at 9:10pm

account
Assume it is Monday, May 1, the first business day of the month, and you have just been hired? Assume it is Monday, May 1, the first business day of the month, and you have just been hired? Assume it is Monday, May 1, the first business day of the month, and you have just been...
Wednesday, November 28, 2012 at 7:00pm

earth space
What man made or natural features can interfere with the weather radar?
Wednesday, November 28, 2012 at 5:10pm

painting
a gallon of paint will cover about 350 square feet of space. You are painting 3 halls of a school. Ignoring the doors, the halls are 10 feet tall and 125 feet long. You buy 11 gallons of paint. Did you buy enough of paint?
Wednesday, November 28, 2012 at 10:46am

Physics
A rocket of total mass 3100 is traveling in outer space with a velocity of 120 . To alter its course by 40.0, its rockets can be fired briefly in a direction perpendicular to its original motion.
Tuesday, November 27, 2012 at 3:59pm

calculus
3 letters are chosen at random from the letters P, A, N, S, O, L. What is the size of the sample space of this experiment? 12 10 20 30 35
Tuesday, November 27, 2012 at 10:20am

physics
An astronaut throws a wrench in interstellar space. How much force is required to keep the wrench moving continuously with constant velocity? Select one of the options below as your answer: A. a force equal to its weight on Earth B. a force equal to zero C. a force equal to ...
Tuesday, November 27, 2012 at 10:08am

Suppose the space shuttle is in orbit 390 km from the Earth's surface, and circles the Earth about once every 92.4 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g, the gravitational acceleration at the Earth&#...
Monday, November 26, 2012 at 11:43pm

physics
During winter break, the police department in your hometown asks you to consult in the investigation of a traffic accident that occurred in a large parking lot. It seems that a car was backing out of a parking space when a pickup truck plowed straight into it from behind. The ...
Monday, November 26, 2012 at 11:36pm

Physics ASAP
Suppose the space shuttle is in orbit 390 km from the Earth's surface, and circles the Earth about once every 92.4 minutes. Find the centripetal acceleration of the space shuttle in its orbit. Express your answer in terms of g, the gravitational acceleration at the Earth&#...
Monday, November 26, 2012 at 10:47pm

stats math
Suppose that two cards are randomly selected from a standard 52-card deck. What is the probability that the first card is a spade and the second card is a space if the sampling is done without replacement?
Monday, November 26, 2012 at 10:47pm

algebra
You are planning an ornamental garden that has a total area of 200 square feet. There are two sizes of ornamental plants you have chosen for your garden. Each small plant requires 2.5 square feet of space and each large plant requires 8 square feet of space. This situation can...
Monday, November 26, 2012 at 6:41pm

Earth-Space Science
what factors might affect the length of the rays after an impact?
Monday, November 19, 2012 at 10:17pm

Physics
An unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First he tries to throw a rope to his fellow astronaut, but the rope is too short. In a last ditch effort, the astronaut ...
Monday, November 19, 2012 at 3:26pm

physics
A crate with a mass of 110 kg glides through a space station with a speed of 2 m/s. An astronaut speeds it up by pushing on it from behind with a force of 240 N, continually pushing with this force through a distance of 4 m. The astronaut moves around to the front of the crate...
Sunday, November 18, 2012 at 10:17pm

Physics
A crate with a mass of 110 kg glides through a space station with a speed of 2 m/s. An astronaut speeds it up by pushing on it from behind with a force of 240 N, continually pushing with this force through a distance of 4 m. The astronaut moves around to the front of the crate...
Sunday, November 18, 2012 at 10:12pm

english
please proofread my contrast and comparision paper Another War for the People of the United States Although the Air Force, Navy, and Army were different in the 1940's and the 200's show that, even though technology and communication have improved, conflicts between ...
Sunday, November 18, 2012 at 9:54pm

math
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Sunday, November 18, 2012 at 12:19pm

Physics
Evaluate the following as true or false. If the Earth shrank in size, but all other factors remained the same, all of its satellites, including the Moon, would fly off into space. a) True b) False
Sunday, November 18, 2012 at 9:53am

math
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Saturday, November 17, 2012 at 3:01pm

posibility
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Saturday, November 17, 2012 at 9:13am

math
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Saturday, November 17, 2012 at 8:41am

An archaeologist has set up a dig at a newly discovered site. She and her team start excavating an area that is 36 feet by 24 feet. Because the scientists find many artifacts near the edges of this area, they decide to expand the dig. They add nine feet in all directions to ...
Friday, November 16, 2012 at 9:45pm

posibility
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Friday, November 16, 2012 at 8:35pm

math
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site. Acertain direction from the launch site is considered critical in terms of hydrogen chloride pollution from the exhaust cloud. It has been determined ...
Thursday, November 15, 2012 at 8:46pm

statistics
Which of the following is NOT true with respect to the properties of probability? 0 < x < 1 P(S) = 1, where S is the sample space P(A) + P(Ac) = 0 If two events are independent then P(A and B) = P(A) * P(B)
Thursday, November 15, 2012 at 10:27am

physics
It has been suggested that rotating cylinders about 12 mi long and 4.1 mi 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 acceleration on Earth?
Wednesday, November 14, 2012 at 10:48pm

Calculus
A wire 4 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...
Wednesday, November 14, 2012 at 7:44pm

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

physics HELPP!!!!!!!
Two astronaut, as shown in the figure, each having a mass of 88.0 kg, are connected by a 10.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 6.00 m/s. By pulling on the rope, the astronauts shorten...
Wednesday, November 14, 2012 at 4:44pm

statistics
Which of the following is NOT true with respect to the properties of probability? 0 < x < 1 P(S) = 1, where S is the sample space P(A) + P(Ac) = 0 If two events are independent then P(A and B) = P(A) * P(B)
Wednesday, November 14, 2012 at 1:03pm

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