Wednesday

November 25, 2015
**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 by Derick*

**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 by Paul*

**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 by Ryzza*

**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 by taylor*

**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 by Coleson*

**Physics**

What electric field strength would store 17.5J of energy in every 9.00mm3 of space?
*Sunday, September 7, 2014 by Icy*

**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 by thankyou*

**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 by Asahi*

**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 by Nicole*

**geography**

This reflects some heat back into space and traps some heat near the earth.
*Monday, September 1, 2014 by Ella*

**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 by Serena*

**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 by School Lover*

**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 by Paula*

**Honors Physics**

Give some examples of applications that have resulted from work done by physicists on the exploration of space.
*Sunday, August 24, 2014 by X*

**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 by Anonymous*

**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 by Chearles*

**science**

In the space is there any aliens?
*Tuesday, August 19, 2014 by mariya*

**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 by Sydney*

**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 by Dhruba *

**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 by Regina*

**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 by daniela*

**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 by daniela*

**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 by Shannon*

**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 by Pam*

**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 by Pamala*

**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 by Pam*

**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 by Chris*

**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 by sara*

**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 by Melly*

**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 by J*

**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 by cfd*

**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 by Dulce*

**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 by Melissa*

**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 by chandler*

**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 by kim*

**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 by joy*

**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 by sam*

**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 by Unmei*

**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 by samantha*

**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 by Unmei*

**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 by cee*

**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 by cee*

**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 by rosie*

**architecture**

what is space? what does mean a space structure? what is spacer?
*Saturday, June 21, 2014 by gutema *

**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 by sally*

**Astronomy**

True or False? Galaxies are distributed randomly and approximately uniformly in space.
*Wednesday, June 18, 2014 by querty*

**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 by carol*

**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 by carol*

**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 by carol*

**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 by Anonymous*

**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 by allen*

**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 by Scott *

**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 by Anonymous*

**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 by Anonymous*

**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 by rfvv*

**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 by Chloé*

**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 by Anonymous*

**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 by Luke*

**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 by James*

**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 by KD*

**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 by Mary Lamberts*

**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 by mstv1112*

**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 by Arr-chan*

**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 by Halo4Records*

**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 by Halo4Records*

**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 by Halo4Records*

**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 by Halo4Records*

**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 by Halo4Records*

**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 by Mary Ann *

**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 by Kiirsty*

**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 by tira*

**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 by BOB*

**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 by Liz*

**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 by Josh *

**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 by Liz*

**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 by Peg*

**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 by Anonymous*

**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 by Space Shuttle-Q1*

**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 by Cassie*

**Astronomy**

Imagine that you have found an object out in space. When you use the inverse square law to compute its luminosity, you get a ridiculously large value. You therefore suspect that relativistic beaming is at work - the radiation is coming from a jet traveling at speed v directly...
*Sunday, May 11, 2014 by qwerty*

**(1-13) Chemistry - Science**

Which of the following effects will make the ratio (PV) / (nRT) less than 1 for a real gas? a) The gas molecules are large enough to occupy a substantial amount of space. b) A large number of molecules have speeds greater than the average speed. c) The gas molecules have a ...
*Saturday, May 10, 2014 by Ana *

**math**

A cow is attached to a rope 10 feet long in a pasture bordered by two fence( more than 10 feet long) meeting at an angle of 60 degree. What is the area of the space in which the cow is grazing? a. 20 pi b. 5 pi /3 c. 20 pi /3 d. 50 pi /3 e. 100 pi please answer and explain
*Friday, May 9, 2014 by thomas *

**science**

gravitational force decreases with distance. what does this mean for a space traveler who leaves earth in a spaceship?
*Wednesday, May 7, 2014 by kev*

**Math**

When an engineer inspects a pipeline she notices a high water mark. How much space is there between the high water level and the top of the pipe, to the nearest hundredth. The diameter of the pipe is 1.2m and the horiztonal distance across the surface of the water is 80 cm.
*Tuesday, May 6, 2014 by Summer*

** science**

1. Use the image below to answer the following question. At which position does the diver have the most potential energy? (1 point) 1 2 3 4 2. How does the gravitational potential energy of Coaster A compare with that of Coaster B? (1&...
*Tuesday, May 6, 2014 by Lisa*

**physics **

You are a sucker for scenic overlooks, so you want to build a house overhanging a cliff. The way you do this is by taking a 20,000 N concrete beam and hang it over the edge of the cliff with one edge at the cliff ledge and the other edge 700m away in free space. You plan to ...
*Friday, May 2, 2014 by Michelle*

**math (5)**

The monthly profit (in dollars) of Bond and Barker Department Store depends on the level of inventory x (in thousands of dollars) and the floor space y (in thousands of square feet) available for display of the merchandise, as given by the equation below. P(x, y) = -0.016x^2...
*Thursday, May 1, 2014 by Mia*

**Space Exploration**

Give two reasons why observatories are still being built on Earth instead of launching more space telescopes? I I'm assuming one reason is the cost but can't find another reason .
*Thursday, May 1, 2014 by Cherie*

**math (5)**

The monthly profit (in dollars) of Bond and Barker Department Store depends on the level of inventory x (in thousands of dollars) and the floor space y (in thousands of square feet) available for display of the merchandise, as given by the equation below. P(x, y) = -0.016x^2...
*Thursday, May 1, 2014 by Mia*

**science**

is that electric current occupies space?
*Thursday, May 1, 2014 by sonia*

**math (5)**

The monthly profit (in dollars) of Bond and Barker Department Store depends on the level of inventory x (in thousands of dollars) and the floor space y (in thousands of square feet) available for display of the merchandise, as given by the equation below. P(x, y) = -0.016x^2...
*Wednesday, April 30, 2014 by Mia*

**Math Help 2 Questions Urgent!**

1. The Pythagorean Theorem can be used to find distances between two points on a grid. But what about finding distances in three-dimensional space? Consider a rectangular box, which has length l, width w, and height h. What is the distance from one corner to the opposite ...
*Wednesday, April 30, 2014 by Josh*

**Math Help - 2 Questions**

1. The Pythagorean Theorem can be used to find distances between two points on a grid. But what about finding distances in three-dimensional space? Consider a rectangular box, which has length l, width w, and height h. What is the distance from one corner to the opposite ...
*Wednesday, April 30, 2014 by Josh*

**Astronomy**

The luminosity of the Sun is 4*10^33 erg/s, and its radius is 7*10^10 cm. What is the Sun's effective temperature? Please enter your answer in units of Kelvin. What is the Sun's effective temperature? Please enter your answer in units of Kelvin. - unanswered What is ...
*Tuesday, April 29, 2014 by qwerty*

**Math -Help**

you have a space in your garden for 100 small flowering bulbs. Crocus bulbs cost $0.45 each, and daffodil bulbs cost $0.85 each. Your budget allows you to spend $55.80 on bulbs. How many crocus bulbs and how many daffodil bulbs can you buy?
*Tuesday, April 29, 2014 by Sarah*

**Space Exploration**

List three subsystems of a SARSAT satellite and tell what the function of eCh subsystem is. Please help I can't seem to find them.
*Tuesday, April 29, 2014 by Cherie*

**CALCULUS**

two birds are flying along in 3-space. At time t, the first bird is at the point (x,y,z) on the line
*Sunday, April 27, 2014 by AIRA*

**Deepa**

A bus service carries 10 000 people daily between Ajax and Unoin Station, and the company has space to serve up to 15 000 people per day. The cost to ride the bus is 20$. Market research shows that if the fare increases by $0.50, 200 fewer people will ride the bus. What fare ...
*Saturday, April 26, 2014 by Calculus*

**Chemistry**

The mechanism for the reaction described by NO2(g) + CO(g) ---> CO2(g) + NO (g) is suggested to be (1) 2NO2(g) --->(k1) NO3(g) + NO (g) (2) NO3(g) +CO(g) --->(k2) NO2(g) + CO2(g) Assuming that [NO3] is governed by steady-state conditions, derive the rate law for the ...
*Thursday, April 24, 2014 by Mia*

**Chemistry**

The mechanism for the reaction described by 2N2O5(g) ---> 4NO2(g) + O2(g) is suggested to be (1) N2O5(g) (k1)--->(K-1) NO2(g) + NO3(g) (2) NO2(g) + NO3(g) --->(K2) NO2(g) + O2(g) + NO(g) (3) NO(g) + N2O5(g) --->(K3) 3NO2(g) Assuming that [NO3] is governed by steady...
*Thursday, April 24, 2014 by Mia*