Sunday
May 19, 2013

# Homework Help: Science: Outer Space

Recent Homework Questions About Outer Space

English
I forgot to include the following few sentences. Thank you. 1) Virginia Woolf abandoned the traditional technique of novel writing for a new, more modern form. 2) What did she turn to? She turned into an interior monologue* . In her need to shift back and forth in time and ...
Wednesday, July 6, 2011 at 6:25pm

chem
The average distance between planet X and Earth is about 1.5 x 10^8 miles. How long (minutes would it take pictures transmitted from a space vehicle on Planet X's surface to reach Earth?
Saturday, July 2, 2011 at 3:32pm

Physics
In a simulation on earth, an astronaut in his space suit climbs up a vertical ladder. On the moon, the same astronaut makes the same climb. In which case does the gravitational potential energy of the astronaut change by a greater amount?
Thursday, June 30, 2011 at 10:24pm

physics
A satellite explodes in outer space, far from any other body, sending thousands of pieces in all directions. How does the linear momentum of the satellite before the explosion compare with the total linear momentum of all the pieces after the explosion?
Tuesday, June 28, 2011 at 8:13pm

early childhood development
the basis of a good child guidance system is the caregiver's (a)arrangement of space in the facility (b)kknowledge of child development (c)choice of equipment (d)schedule of activities i put b
Monday, June 27, 2011 at 1:03pm

science
an area of space with gravity so strong that it traps light (two words) it has 9 letter in it
Wednesday, June 22, 2011 at 6:07pm

science
a body that revolves around another body in space. it has 9 letters
Wednesday, June 22, 2011 at 5:25pm

science
the space telescope was named for this American astronmer it has 6 letters
Wednesday, June 22, 2011 at 5:16pm

science
the russian name given to a person who travels into space it is a 9 letter word
Wednesday, June 22, 2011 at 5:08pm

early childhood education
which one of these factors is most likely to determine the total number of children you can take into your facility (a)physical space available (b)childreds need (c)staff members skills (d)program philosophy
Wednesday, June 22, 2011 at 2:26pm

chemistry
space probe Pioneer 11 was lanced April 5, 1973, and reached Jupiter in Dec.1974 traveling a distance of 998 km. How long did it take an electromagnetic signal to travel to earth from pioneer 11 when it was near jupiter?
Monday, June 20, 2011 at 6:13pm

Poetry
Decide which word from the word bank belongs in each blank in the statements that follow. bland / contaminated / devastated / punitive / transcend / concretely / convey / procrastinating / spontaneous / uniqueness 1. Even though I know doesn't pay, I still put off until ...
Monday, June 20, 2011 at 4:08am

"Something invisible, seeking shelter from the cruel and pitiless vacuum of space." Is an example of: a. metaphor b. personification c. symbolism d. hyperbole Your help is much appreciated !!
Friday, June 17, 2011 at 9:17am

Examine the evidence of the Earth's shape. The sharp horizon at first suggests a flat Earth with an edge. But as you walk toward the horizon, the "edge" recedes ahead of you, implying that the Earth's surface is curved. Look also at a ship sailing out to sea...
Tuesday, June 14, 2011 at 1:09pm

Math
A space shuttle is spotted flying at an angle of elevation of 17° when sighted from Cape Canaveral. At the moment it is sighted, it is directly overhead a ship located 12 mi from the Cape. The height of the shuttle at this moment is approximately a)3.5 b)3.7 c)2.8 d)4.1
Sunday, June 12, 2011 at 9:35pm

Physics
A single photon in empty space is converted into an positron and an electron, each with rest mass 511Mev. (a) show this transformation is not possible (dynamaically). (b)How could this transformation be made posible. (c)what is the minimum photon energy required to enable the ...
Sunday, June 12, 2011 at 6:44pm

math
a liscence plate for a car must consist of a letter followed by two numbers. Each letter mus be an R, U or N. Each number must be a 2 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points in the sample. Construct a tree diagram. ...
Sunday, June 12, 2011 at 12:18pm

Translate the following situation into an inequali
“Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each pack?”
Saturday, June 11, 2011 at 3:34am

“Charlie would like to pack one less outfit than J
“Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of 24 outfits. How many outfits can they each pack?”
Saturday, June 11, 2011 at 3:34am

physics
The average speed of an orbiting space shuttle is 20100 mi/h. The shuttle is orbiting about 196 mi above the Earth’s surface. Assume the Earth’s radius is 3963 mi. How long does it take to circle the Earth? Answer in units of h ( hours)
Saturday, June 11, 2011 at 1:50am

Physics
If a cylindrical space station 300 {\rm m} in diameter is to spin about its central axis, at how many revolutions per minute ({\rm rpm}) must it turn so that the outermost points have an acceleration equal to g?
Friday, June 10, 2011 at 11:36pm

Instructional materials:Their preparation and Use
if you could help please do 3. A document camera is more versatile than an opaque projector because you can use it to A. record sound. B. project three-dimensional objects. C. display book pages on a screen. D. view colored items. 4. Which one of the following guidelines ...
Thursday, June 9, 2011 at 9:23pm

Geometry
A box is filled with 6 cans of tennis balls. If the emply space was filled with sand, how much sand is needed to fill the box? Each can has a radius of 2 in. Height of box is 12in.
Thursday, June 9, 2011 at 1:51am

physics (special relativity)
A single photon in empty space is transformed into an electron and a positron, each with rest mass m(e). (a) show that the folowing process is dynamically impossible. (b) Explain in detail how this process can be made possible (c) for part b what would be the minimum photon ...
Wednesday, June 8, 2011 at 2:44pm

geometry
A box is filled with 6 cans of tennis balls. If the empty space was filled with sand, how much sand will be needed to fill the box? Each can of tennis balls has a radius of 2 in. Height of box is 12in.
Wednesday, June 8, 2011 at 10:00am

Chemistry
Any object, be it a space satellite or a molecule, must attain an initial upward velocity of at least 11.2 km/s in order to escape the gravitational attraction of the earth. What would be the kinetic energy in joules of a satellite weighing 2337 lb that has the speed equal to ...
Wednesday, June 8, 2011 at 12:39am

daycare
You've decided to operate a day care home. Which one of the following factors is the most important in helping you make your decision? A. Your family is willing to share their living space with the children in the program. B. Your home seems to be large enough. C. You find...
Tuesday, June 7, 2011 at 10:14pm

physics
Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? I know that the twin that was ...
Tuesday, June 7, 2011 at 9:06pm

relativity
Show that the following process is dynamically inpossible: A single photon in empty space is transformed into an electron and a positron, each with rest mass m(e).Explain in detail, How can this this process be made possible? In this case, what is the minimum photon energy ...
Tuesday, June 7, 2011 at 2:35pm

Chmistry
Any object, be it a space satellite or a molecule, must attain an initial upward velocity of at least 11.2 km/s in order to escape the gravitational attraction of the earth. What would be the kinetic energy in joules of a satellite weighing 2337 lb that has the speed equal to ...
Tuesday, June 7, 2011 at 8:20am

math
how do you explain this questionA mini license plate for a toy car must consist of a letter followed by two numbers. Each letter must be a T, O or Y. Each number must be a 4 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points ...
Sunday, June 5, 2011 at 10:41pm

n/a
Inter-department Services Step Method : O'brain's Department Store Allocates the Cost of personnel and Payroll to three retail Sales Department Housewares , Clothing and Furniture . In addition to providing services to the operating department. Personnel and Payroll ...
Saturday, June 4, 2011 at 4:26pm

physics
In outer space two identical space modules are joined together by a 500.0 massless cable. These modules are rotating about their center of mass. In each module, the cable is connected to a motor,so that the modules can pull each other together. The initial tangential speed of ...
Thursday, June 2, 2011 at 11:00pm

english
I am stuck with being able to complete this assignment and I was wondering if some1 could help me with it. I don't (can't) fail this 1. I already completed my english assignment but I totally bombed it and they want me 2 complete this assignment 2 b able 2 pass. ...
Wednesday, June 1, 2011 at 7:21pm

physics
An 80.9 kg astronaut is taking a space walk to work on the engines of his ship, which is drifting through space with a constant velocity. The astronaut, wishing to get a better view of the Universe, pushes against the ship and much later finds himself 30.3 m behind the ship. ...
Tuesday, May 31, 2011 at 4:09pm

space
A water tower has to be equidistant from three communities. The communities are at positions (-25, 20), (-5, -40) and (15, 30). Find the coordinates of the point where the water tower should be built.
Monday, May 30, 2011 at 10:19am

History checkpoint
From the list provided below, you must decide if each item was an initiative only within Kennedy’s New Frontier, if it was proposed by both presidents, or if it was an initiative only within Johnson’s Great Society. For each numbered item, place an “X” in ...
Friday, May 27, 2011 at 12:04am

English
Could you please check these sentences,please? It's really urgent. I made some changes and I would like to know if they are correct. 1) The interior monologue has the following features. First, it is immediate since it lacks the conventional syntax and it is free from ...
Wednesday, May 25, 2011 at 6:18pm

english
what a business man need to know about nigeria concepts of personal space and rules of social behaviour in order to conduct business successfully in that country
Saturday, May 21, 2011 at 12:18pm

Physics
Which of the following are not transverse waves? a) Wind (Airy) waves on the ocean. b) Water ripples in a small pool. c) Microwaves inside a microwave oven. d) Vibrations travelling on the string of a guitar. e) Radio waves travelling through space. f) Vibrations travelling on...
Wednesday, May 18, 2011 at 9:04pm

math
what is the amount of space, in cubic units, occupied by a three-dimensional object?
Wednesday, May 18, 2011 at 8:36pm

English
Thank you very much. Could you check these sentences about the interior monologue. 1) The American psychologist William James coined the phrase “stream of consciousness” to define the continuous flow of thoughts and sensations that characterize the human mind. 2) The...
Wednesday, May 18, 2011 at 7:00pm

Physics
An astronaut takes a space trip to newly discovered palnet X. measurements from earth indicate that: Mx=3Me and Rx=2Re. What is the acceleration of gracity gx on this planet as a multiple of ge?
Wednesday, May 18, 2011 at 11:17am

Geometry
how many planes can be passed through two points in space? and is there exactly one plane containing two nonparallel lines?
Sunday, May 15, 2011 at 6:42pm

Algebra- word problem
Jordan has a photograph on his wall that is 3 in. long and 6 in. wide. He takes it to be framed which increases the length and width by 2 in. each. How does getting the picture framed change the amount of wall space needed? My choice is B- Correct?? Choices A. the wall needed ...
Sunday, May 15, 2011 at 8:14am

Math
Suppose it takes 3 days for a space vehicle to travel from the earth to the moon. About how long would it take the same vehicle traveling at the same speed to Venus? Moon= 240,000mi Venus=26,000,000mi Round to the nearest whole number. Use scientific notation. I know it is 325...
Friday, May 13, 2011 at 10:19pm

Grammar
Choose the best answer: 1. (You're, Your) sister-in-law's car is parked in (its, it's)space. Answer: Your sister-in-law's car is parked in its space. 2. Four patients (was, were) sutured with 3-0 silk, and (its, it's) their responsibility to return for (...
Friday, May 13, 2011 at 5:45pm

Astronomy
In what ways do Earth and the moon move through space? How do these motions produce such phenomena as day and night, the seasons, phases of the moon, and eclipse?
Thursday, May 12, 2011 at 11:56pm

Physics
The space shuttle is in a 150km-high circular orbit. It needs to reach a 560km-high circular orbit to catch the Hubble Space Telescope for repairs. The shuttle's mass is 7.00×10^4kg. How much energy is required to boost it to the new orbit? In the original orbit, I ...
Wednesday, May 11, 2011 at 5:09pm

Math
An observer 2.5 miles from the launch pad of a space shuttle measures the angle of elevation to the base of the shuttle to be 25 degrees soon after lift off. How high is the shuttle at that instant? (Assume that the shuttle is still moving vertically)
Tuesday, May 10, 2011 at 4:20pm

Math
An observer 2.5 miles from the launch pad of a space shuttle measures the angle of elevation to the base of the shuttle to be 25 degrees soon after lift off. How high is the shuttle at that instant? (Assume that the shuttle is still moving vertically)
Tuesday, May 10, 2011 at 10:55am

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
Sunday, May 8, 2011 at 10:28pm

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
Sunday, May 8, 2011 at 9:12pm

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
Sunday, May 8, 2011 at 5:18pm

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
Sunday, May 8, 2011 at 2:29pm

english
(I need to complete an out line with a introduction and a thesis sentence or statement but I can find what I am looking for here is the article) This question expresses a commonly held (by women) negative stereotype about guys of the male gender, which is that they cannot find...
Saturday, May 7, 2011 at 2:50pm

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
Saturday, May 7, 2011 at 12:52am

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
Friday, May 6, 2011 at 10:17pm

earth
Atmosphere Homework! 1.Which of the following layers of the atmosphere is closest to space? 2.A barometer measures? 3. The atmosphere contains tiny solid particles called what? 4.The process by which the atmosphere slows Earth's loss of heat to space is called the ..? 5....
Thursday, May 5, 2011 at 11:22pm

geometry
Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next foot)?
Wednesday, May 4, 2011 at 10:17am

science
if a person weighs 120kg on earth, how much would they weigh in space
Tuesday, May 3, 2011 at 6:08pm

trig pls.. help me
A rocket carrying a weather satellite is launched. As it moves through space, the rocket is tracked by two tracking stations located 24 km. apart, beneath the rocket. The 2 tracking stations both lie west of the launching pad. at a specific moment, the rocket's angle of ...
Monday, May 2, 2011 at 4:03pm

Physics
A capacitor has two overlapping plates of width 4.9 m and length 3.5 m separated by 1.3 cm. A dielectric of dielectric constant ê = 58.0 fills the space between the plates. If this capacitor is connected to a 35 V battery, how much energy is stored in the capacitor when ...
Sunday, May 1, 2011 at 7:18pm

physics
Marks: 2 The time taken by the space craft moving at a speed equal to half the velocity of light to go from star A to star B is 2 years as calculated at the Earth station. Which of the following is correct for the time measured by the astronaut in the space craft to reach the...
Saturday, April 30, 2011 at 12:06am

physics
Marks: 2 The time taken by the space craft moving at a speed equal to half the velocity of light to go from star A to star B is 2 years as calculated at the Earth station. Which of the following is correct for the time measured by the astronaut in the space craft to reach the...
Saturday, April 30, 2011 at 12:06am

English 102
Can someone give me feedback on this please. Introduction Is same-sex marriage going to create issues in our society? Same-sex marriages will most likely produce issues in many political agendas. Religious leadership of Abrahamic faith everywhere will also be confrontational ...
Friday, April 29, 2011 at 7:13pm

math
What is the sample space for choosing a letter from the word mathematics
Friday, April 29, 2011 at 2:12am

A rocket carrying a weather satellite is launched. As it moves through space, the rocket is tracked by two tracking stations located 24 km. apart, beneath the rocket. The 2 tracking stations both lie west of the launching pad. at a specific moment, the rocket's angle of ...
Thursday, April 28, 2011 at 11:02pm

Geography
Review the cities located within the following longitude and latitude coordinates: 70-80 West Longitude and 30-40 North Latitude. Next, consult your local newspaper or other resource for the weather in these cities. Choose one of the cities found within these coordinates and ...
Thursday, April 28, 2011 at 12:07pm

trig
Each child in a family of 3 children is going to get a pet. One wants a dog or cat, another wants a bird or rabbit, and the third wants a frog or snake. List a sample space or draw a tree diagram and determine the number of possible outcomes.
Tuesday, April 26, 2011 at 2:04pm

Science
What is the effect of increasing "dead space" ?
Sunday, April 24, 2011 at 9:43am

English
I am in college classes and english has never been my strongest class. So I was wondering if anyone would look over my work and see if it is correct and if not offer suggestions for fixing. Thank you in advance. Each of the following sentences has one grammatical error. The ...
Wednesday, April 20, 2011 at 11:02pm

physics
An 85.4 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 22.4 m behind the ship, at rest relative to the spaceship. The only way to return to ...
Wednesday, April 20, 2011 at 8:45pm

space
How much is 2000 kg in outer space?
Tuesday, April 19, 2011 at 4:00pm

math
Please can you me What a linear inequality describes the graph of a dashed line passing through (0,3) and (6,0) with the space beneath the graph shaded?
Monday, April 18, 2011 at 1:07pm

physics
I keep getting the wrong answer... A solar model is used to calculate the expected temperature and density at all depths within the Sun. These results are then used to calculate the expected fusion rate within the Sun. We have confidence that the model is correct because it ...
Sunday, April 17, 2011 at 7:52pm

science
how long have we been sending people into space? Or.. when did space exploration start?
Sunday, April 17, 2011 at 2:49pm

science
How much money does CANADA spend each year on space explorations? thanks
Sunday, April 17, 2011 at 2:14pm

if you are printing an essay on the comuter....can the essay be double line space?
Friday, April 15, 2011 at 8:46am

C++ programming computer
I'm having some trouble trying to program these problems and putting them into the main function. Please help me by giving some advice or website that offer good information for me. The questions are below here: 1. Write a function that accepts a string of characters from...
Wednesday, April 13, 2011 at 7:39pm

English
I forgot to include the following sentences. Thank you vy much for your help. 1) The station orbits earth 16 times a day so he saw a sunrise evey 90 minutes. He also carried out some important experiments and took a lot of photos. 2) Actually, he lost his camera in space when ...
Wednesday, April 13, 2011 at 5:32pm

English
I'd like you to check these sentences for me, please. Thank you very much. It's urgent! 1) Virginia Woolf wanted to explore man's mental experience following what Joyce had already done in England Proust in France. S 2) he abondoned traditional writing techniques ...
Wednesday, April 13, 2011 at 5:00pm

English
Can you please check these sentences I'm doubtful about? 1) They will be extras in a sci-fi film. They’ll take a day off school and they will get paid, too. 2) The film director tells them they have to imagine living in the year 2050. At that time there will be aliens...
Tuesday, April 12, 2011 at 2:30pm

Chemistry
Can you help me with solving this? I don't just want the answer,but how to do it. The average distance between Mars and Earth is about 1.3 108 miles. How long would it take TV pictures transmitted from the Viking space vehicle on Mars' surface to reach Earth? (1 mile...
Monday, April 11, 2011 at 11:12pm

Science
I'm trying to figure out the ratio of floor to window space needed for passive solar heating...some sources say windows should be equivalent to 8% of the floorspace, others 80%? What do you think is the most realistic?
Monday, April 11, 2011 at 10:08pm

Geometry
Part 1. The area of a circular pool is approximately 7,850 square feet. The owner wants to replace the tiling at the edge of the pool. The edging is 6 inches wide, so he plans to use 6-inch square tiles to form a continuous inner edge. How many tiles will he need to purchase...
Sunday, April 10, 2011 at 1:22pm

physics modern
1. a) If a photon and an electron each have the same energy of 20.0 eV, find the wavelength of each. b) If a photon and an electron each have the same wavelength of 250 nm, find the energy of each. c) You want to study an organic molecule that is about 250 nm long using either...
Saturday, April 9, 2011 at 2:22pm

Physics urgent!!!!
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Friday, April 8, 2011 at 3:40pm

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Friday, April 8, 2011 at 1:16pm

physic
Two cubes with sides of length 121.0 mm fit in a space that is 243.3 mm wide, as shown in the figure. One cube is made of aluminum, and the other is made of brass. What temperature increase is required for the cubes to completely fill the gap? Give answer in kelvin, do not ...
Friday, April 8, 2011 at 8:29am

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
Thursday, April 7, 2011 at 5:50pm

physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Thursday, April 7, 2011 at 4:14pm

Physics
The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth exerts ...
Wednesday, April 6, 2011 at 9:32pm

Physics
The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth exerts ...
Wednesday, April 6, 2011 at 9:29pm

3 dice are rolled let (y,r,b) represent each outcome? a- sample space b- prob rolling a sum of 18 c- prob of rolling a sum less than 5
Wednesday, April 6, 2011 at 7:17pm

English
Can you please check the following sentences, please. It's really urgent. 1) Following what Joyce had already done in England and Proust in France, and what, in some way, Sterne had attempted as early as two centuries before, Virginia Woolf therefore abandoned the ...
Wednesday, April 6, 2011 at 5:33pm

Information Technology Principles
If a term paper consisted 42 pages, each containing 40 lines of 100 symbols each (counting each space as a symbol), was to be encoded using Unicode, how many bytes of storage space would be required?
Wednesday, April 6, 2011 at 1:03am

math
at the fair, 3/4 of the students wanted to see the space shuttle exhibit,but only 2/9 of theses students wrote down the address to get more nformation. what fraction of the students got the address?
Tuesday, April 5, 2011 at 11:01pm

Physics
I am stuck on this question and not really sure what to do for it. I think that i can use this equation Q/dt=e*sigma*A*T^4 for it, but i'm not getting the right answer for it. Is this not the right equation? Question: Electronics and inhabitants of the International Space ...
Tuesday, April 5, 2011 at 5:26pm

Representing Text
If a term paper consisted 42 pages, each containing 40 lines of 100 symbols each (counting each space as a symbol), was to be encoded using Unicode, how many bytes of storage space would be required?
Tuesday, April 5, 2011 at 6:41am

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Tuesday, April 5, 2011 at 6:20am

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
Sunday, April 3, 2011 at 3:56pm

Chemistry: Check please, these are hw assignments
1. Gases can be considered fluids. a.) True b.) False Answer: False 2.Gases are not easily compressed. a.) True b.) False Answer: True 3. Gases spread to fill out space. a.) True b.) False Answer: True 4. Increased pressure on a gas at constant temperature will cause the ...
Saturday, April 2, 2011 at 7:39pm

PHYSICS
A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the drawing. As the station rotates, an astronaut in chamber A is moved 3.18 102 m along a circular arc. How far along a circular arc is an astronaut in chamber B moved during ...
Saturday, April 2, 2011 at 2:32pm

Math&gt;&gt;&gt;&gt;if anyone could check my answer
this problem is difficutl for me i have an answer but im unsure so if someone could check my answer please. heres my problem: A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The ...
Thursday, March 31, 2011 at 11:39pm

MATH
A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The distance to the spiral galaxy NGC 4603 is about 1.08 x 10^8 light years. What is the distance in km?
Thursday, March 31, 2011 at 8:48pm

Precal
The equation is y=80.4- 11 ln x, 100<x<1500 Which approximates the minmum required ventilation rate in terms of the air sapace per child in a public school class room. In the model, x is the air space per child in cubic feet and y is the ventilation rate per child in ...
Thursday, March 31, 2011 at 5:24pm

math
Jeff put a small box that is 12 inches long, 8 inches wide, and 4 inches tall inside a box that is 20 inches long, 15 inches wide, and 9 inches high. How much space is left in the larger box?
Wednesday, March 30, 2011 at 9:36pm

physics
A 14 kg body is moving through space in the positive direction of an x axis with a speed of 220 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 6.4 kg, moves away from the point of explosion with a speed of 190 m/s in the positive y...
Tuesday, March 29, 2011 at 11:35pm

phYSICS
the process of charging a conductor by bringing it near another charged object and then grounding the conductor is called... a) charging by contact b) induction c) charging by polarization d) neutralization which one of the following statements is true concerning the madnitude...
Tuesday, March 29, 2011 at 10:20pm

physics
Zero, a hypothetical planet, has a mass of 5.7 x 1023 kg, a radius of 2.8 x 106 m, and no atmosphere. A 10 kg space probe is to be launched vertically from its surface. (a) If the probe is launched with an initial kinetic energy of 5.0 x 107 J, what will be its kinetic energy ...
Monday, March 28, 2011 at 12:56pm

Biology - The Stomach
When referring to the lumen of the stomach is that just the opening. As in where are the HCl is and where your food enters? I googled the definition of lumen and it says inside space. I'm just not too clear on what it really means. Thanks.
Sunday, March 27, 2011 at 10:44pm

english
Every now and then, instead of using e-mail, mail a letter to your grandparents. We live in a fast-paced world. We feel comfortable using computers to send e-mails and Instant Message. Nana doesn’t live in that time zone. Forget all those fancy fonts and emoticons or ...
Sunday, March 27, 2011 at 4:42pm

Physics
You are on the Moon and would like to send a probe into space so that it does not fall back to the surface of the Moon. What launch speed do you need?
Saturday, March 26, 2011 at 4:09pm

BUS 210
Content and Development 170 Points Points Earned XX/170 Additional Comments: The student covers all key elements of the assignment in a substantive way. · Reviews the three business problems identified in Week Six paper · Develops technology solutions to the ...
Saturday, March 26, 2011 at 11:04am

Mr. Smart just bought a new dog named Fluffy. Mr Smart would like to enclose a play space for Fluffy in his back yard. The 5 side play space has the dimensions, in metres. They are x +11, 2x-4,3x. Write a simplified expression for the number of metres of fencing needed to ...
Friday, March 25, 2011 at 7:44pm

cross word puzzle
This is for tomorrow and i'm in trouble with this puzzle, please help:ACROSS 9 letters and start with (au)the hint is groups of people who watch or listen to a show, speech, or other performance. Down:It starts off with (aw) and the hint is: a synonym for uncomfortable or ...
Thursday, March 24, 2011 at 9:47pm

math
A baseball diamond has 90 ft between each base A sofball diamond has 60 ft between each base How many yards longer is the space between bases an a baseball diamond than a softball diamond?
Thursday, March 24, 2011 at 7:09pm

health
choose a tv show that you enjoy and use the chart to emanine how the characters show empathy toward one another.which actions show compassion?which one don't?once you've completed the chart,pick one sence from the episode and determine how the characters might have ...
Thursday, March 24, 2011 at 5:37pm

physics-telescope
The Hubble Space Telescope (HST) can resolve objects that have a small angular separation because there is no atmospheric distortion of the light. (i.e. The HST has excellent resolving power.) Its 2.4-m-diameter primary mirror can collect light from distant galaxies that ...
Wednesday, March 23, 2011 at 11:22pm

Physics
An 95.0 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 26.3 m behind the ship, at rest relative to the spaceship. The only way to return to ...
Monday, March 21, 2011 at 10:12pm

math/116 algebra
Application Practice Answer the following questions. If appropriate, use Equation Editor to show your work. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting. Each part is ...
Monday, March 21, 2011 at 9:12pm

math
the foyer was 8 feet by 8 feet, but the tiles were 4 square feet. how many tiles will they need to fill the space?
Monday, March 21, 2011 at 5:44pm

Physics
A car going 50mi/h overtakes and passes another car moving at 45 mi/h. what length of road is required for the operation? assume that each car is 15 ft long and that there is a 60-ft space between them before and after passing. taking into account the approach of a car from ...
Sunday, March 20, 2011 at 3:38am

math
Translate the following situation into an inequality. Do not solve. “Charlie would like to pack one less outfit than Jane for their trip. Loretta would like to bring five outfits less than twice what Jane packs. Due to space in the suitcase, they are limited to a total of...
Wednesday, March 16, 2011 at 9:38pm

space
what is a small body made of rock and ice in the solar system?
Wednesday, March 16, 2011 at 6:46pm

Math(Probability)
**Describe the outcome space** (a)If a Families that have three children each and select one such family at random. Describe the sample space S in terms of their children as 3-tuple, agreeing for example that "gbb" would indicate that the youngest is a girl and two ...
Wednesday, March 16, 2011 at 10:10am

physics
Engineers are trying to create artificial "gravity" in a ringshaped space station by spinning it like a centrifuge. The ring is 120 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real ...
Tuesday, March 15, 2011 at 3:18pm

physics
Two Astronauts A and B are working in the space shuttle in the space.Suddenly the hammer falls from the hands of astranaut in space. who will hear most sound,Astranonaut A or B .and why?
Tuesday, March 15, 2011 at 4:32am

Algerbra
the minimum size of dance floor that the prom committee is considering is 30' by 30'. they assume that this size will allow 100 couples to be on the dance floor at once. how many square feet of dance space per couple does this size allow? to allow for more dancers, the...
Monday, March 14, 2011 at 10:20am

Math
The circular rug is placed on a square floor. The rug touches all four walls. How much of the floor space is not covered by the rug? The square floor is 14 feet for length and width.
Sunday, March 13, 2011 at 8:30pm

maths exponential functions
Hi I have a Maths quiz on Monday and i have been of sick for the past week. I received these review questions from my teacher via email and he isn't replying to my questions i really do not get these questions if someone can do these and explain to me how they did them it...
Sunday, March 13, 2011 at 7:48am

com/155
Each of the following sentences has one grammatical error. The errors are in one of the following four categories: subject–verb agreement, run-on sentence, verb form and tense, or sentence fragment. Identify which of the four errors, if any, is present in each sentence by...
Sunday, March 13, 2011 at 12:47am

physics
Suppose a cylindrical habitat in space 7.70 km in diameter and 25.0 km long has been proposed. Such a habitat would have cities, land, and lakes on the inside surface and air and clouds in the center. They would all be held in place by rotation of the cylinder about its long ...
Friday, March 11, 2011 at 11:05pm

PHYSICS
How much work is done by the Moon's gravitational field as a 1005 kg meteor comes in from outer space and impacts on the Moon's surface? PLEASEEEEEEEEEE
Thursday, March 10, 2011 at 11:01pm

English
Please check for any errors. Correc them for me and I would appreciate it. Thank you for your interest in Rogers Video Theater. I am enclosing a copy of the leased agreement. The $1695.00 unit can be leased for$98.00 a month for 24 months. The first and last to payments are ...
Thursday, March 10, 2011 at 12:47am

Linear Algebra
1/ Prove that the set V=R+ ( the set of all positive real numbers) is a vector space with the following nonstandard operations: for any x,y belong to R+ & for any scalar c belong to R: x O+ ( +signal into circle) y=x.y (definition of vector addition) & c O ( dot signal into ...
Sunday, March 6, 2011 at 2:14pm

Physics-10
A vehicle that weighs 400N on the surface of the earth is traveling in outer space at a speed of 400m/s. it can be stopped by applying a constant force of 20N for?
Friday, March 4, 2011 at 12:27pm

Physics
A parallel-plate capacitor is made from two plates 12.0cm on each side and 4.50mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40. An 18.0 V battery is connected across the plates. What is...
Thursday, March 3, 2011 at 10:07pm

An astronaut is performing a space walk outside the International Space Station. The total mass of astronaut with her space suit and all lher gear is 127 kg. A small leak develps in her pulsion system and 5.84 g of gas are ejected each second into space with a speed of 754 m/s...
Thursday, March 3, 2011 at 7:01pm

physics
An electric space heater draws 15.5 A from a 120 V source. It is operated, on the average, for 5.0 h each day. How much energy in kWh does in consume in 30 days? At 11 per kWh, how much does it cost to operate the heater for 30 days?
Thursday, March 3, 2011 at 6:50pm

Physics
A Vogon’s grandmother, whose mass is 89 kg, drifts through empty space with a velocity of –6.20 m/s until she encounters the 460-kg Ravenous Bugblatter Beast of Traal, drifting with a velocity of +2.80 m/s. When they meet, the RBBoT immediately eats her. What is the ...
Thursday, March 3, 2011 at 6:36pm

algebra
I have a space 43 foot long, and 22 stones 10 1/2" diameter each, how far apart to space them?
Thursday, March 3, 2011 at 2:44pm

An astronaut is performing a space walk outside the International Space Station. The total mass of astronaut with her space suit and all lher gear is 127 kg. A small leak develps in her pulsion system and 5.84 g of gas are ejected each second into space with a speed of 754 m/s...
Thursday, March 3, 2011 at 1:26pm

math
Alexandra needs to cut the square pyramid out of cardboard. How much cubic space does she have?
Wednesday, March 2, 2011 at 9:18pm

Biology
A space probe discovers a planet inhabited by creatures who reproduce with the same hereditary patterns as those in humans. Three phenotypic characters are height (T = tall, t = dwarf), hearing appendages (A = antennae, a = no antennae), and nose morphology (S = upturned snout...
Wednesday, March 2, 2011 at 9:10pm

Math
Tennis balls withal diameter of 2.5 in. Are sold in cans of three. The can is a cylinder. What is the volume of the space in the can not occupied by tennis balls? Assume the balls touch the on the sides,top and bottom.
Tuesday, March 1, 2011 at 10:46pm

physics
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740-kg space tug and a 6500-kg asteroid. They pull on the asteroid with a force of 470 N. Initially the tug and the asteroid are at rest, 480 m apart. How much time does it ...
Tuesday, March 1, 2011 at 1:46pm

Probability
Let A and B be events in a sample space S such that P(A) = 0.6, P(B) = 0.4, and P(A B) = 0.27. Find the probabilities below P(A|B)
Monday, February 28, 2011 at 8:30pm

probability
Let A and B be events in a sample space S such that P(A) = 0.6, P(B) = 0.4, and P(A B) = 0.27. Find the probability P(B|A)
Monday, February 28, 2011 at 8:07pm

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