Saturday

January 21, 2017
**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 by Katarzyna*

**8th Grade math - Ms. Sue please**

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 by Chris*

**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 by Allen*

**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 by Andrew*

**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 by joey*

**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 by monic*

**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 by Bob*

**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 Ã¹0. By pulling on the rope, one of the astronauts shortens the total ...

*Wednesday, November 14, 2012 by Alphonse*

**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 by anon*

**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 by joey*

**earth**

HELP? Two students are given cubic boxes, measuring 10 cm on a side. Robert puts a single glass marble with a diameter of 10 cm in the box. Susan puts 1,000 1-cm glass marbles in her box. 1.Whose box has more empty space? Explain. 2.Whose box will be heavier? Explain. Can you ...

*Wednesday, November 14, 2012 by Andrea*

**statistics**

Which of the following defines the probability of an event A, or P(A)? The probability of A equals 0.50. The probability of A equals the number of possible outcomes in the sample space divided by the number of outcomes favorable to A. The probability of A equals the number of ...

*Wednesday, November 14, 2012 by georgina*

**Physics**

An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit. During the space walk, the unit ejects some gas with a ...

*Tuesday, November 13, 2012 by D*

**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, November 13, 2012 by derek*

**physics**

Radio waves transmitted through space at 3.00Â¡Â¿10 8 m/s by the Voyager spacecraft have a wavelength of 0.120 m. What is their frequency?

*Tuesday, November 13, 2012 by Jason*

**physcis**

Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as particles, calculate...

*Monday, November 12, 2012 by Anonymous*

**physics**

Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as particles, calculate...

*Sunday, November 11, 2012 by Anonymous*

**physics**

Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as particles, calculate...

*Sunday, November 11, 2012 by Anonymous*

**Physics**

A rotating cylinder 7.95 kilometers in radius is designed to be used as a space colony. With what period must it rotate so the residents on it feel as heavy as they would on Earth?

*Sunday, November 11, 2012 by Tristan*

**physics**

Two astronaut, as shown in the figure, each having a mass of 62.0 kg, are connected by a 12.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 5.00 m/s. Treating the astronauts as particles, calculate...

*Sunday, November 11, 2012 by Anonymous*

**physics**

An astronaut in his space suit and with a propulsion unit (empty of its gas propellant) strapped to his back has a mass of 146 kg. The astronaut begins a space walk at rest, with a completely filled propulsion unit. During the space walk, the unit ejects some gas with a ...

*Sunday, November 11, 2012 by Anonymous*

**physics**

The Earthâ€™s radius is about 6380 km. The space shuttle is orbiting about 275.0 km above Earthâ€™s surface. If the average speed of the space shuttle is 23500 km/h, find the time required for it to circle Earth.

*Sunday, November 11, 2012 by Jacky*

**physics**

A 7.00 104-kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2700 km. What is the final speed of the probe?

*Sunday, November 11, 2012 by Anonymous*

**Physics**

Each of the space shuttle's main engines is fed liquid hydrogen by a high-pressure pump. Turbine blades inside the pump rotate at 595 rev/s. A point on one of the blades traces out a circle with a radius of 0.02 m as the blade rotates. (a) What is the magnitude of the ...

*Thursday, November 8, 2012 by Donald*

**Physics**

Suppose the surface (radius = r) of the space station in the figure is rotating at 38.6 m/s. What must be the value of r for the astronauts to weigh one-half of their earth-weight?

*Thursday, November 8, 2012 by Donald*

**Physics**

Suppose the surface (radius = r) of the space station in the figure is rotating at 38.6 m/s. What must be the value of r for the astronauts to weigh one-half of their earth-weight?

*Wednesday, November 7, 2012 by Don*

**physics**

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 Ã— 1024 kg and 6370 km, respectively

*Wednesday, November 7, 2012 by mike*

**physics**

Each of the space shuttle's main engines is fed liquid hydrogen by a high-pressure pump. Turbine blades inside the pump rotate at 595 rev/s. A point on one of the blades traces out a circle with a radius of 0.02 m as the blade rotates. (a) What is the magnitude of the ...

*Wednesday, November 7, 2012 by Don*

**physics**

The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which ...

*Wednesday, November 7, 2012 by D*

**physics**

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...

*Wednesday, November 7, 2012 by Anonymous*

**Physics**

Suppose the surface (radius = r) of the space station in the figure is rotating at 38.6 m/s. What must be the value of r for the astronauts to weigh one-half of their earth-weight?

*Wednesday, November 7, 2012 by Anonymous*

**writing**

PLEASE PROOF READ IT WILL BE DOUBLE SPACED WHEN I SUBMIT IT. In approximately 200â€“350 words, using compare/contrast strategies, discuss the benefits and/or advantages of shopping online, rather than shopping in a store. The Benefits of Online Shopping Rather ...

*Sunday, November 4, 2012 by AMW*

**Capacitance (tricky)**

Two parallel plates of area 41 cm.^2 have equal but opposite charges of 2.60E-07 C. Within the dielectric material filling the space between the plates, the electric field is 5.80E+05 V./m. Find the dielectric constant of the material. Feel like there is a huge lack of ...

*Saturday, November 3, 2012 by andrew*

**AP Physics B**

A gadget of mass 17.85 kg ﬂoats in space without motion. Because of some internal malfunction, the gadget violently breaks up into 3 fragments ﬂying away from each other. The ﬁrst fragment has mass m1 = 4.12 kg and speed v1 = 3.57 m/s while the second ...

*Thursday, November 1, 2012 by Daisy*

**Physics**

A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg Â· m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the center ...

*Thursday, November 1, 2012 by Ashley*

**Physics**

When we lauch a space shuttle will it go with Earths rotationor would it go opposite?

*Wednesday, October 31, 2012 by Catherine*

**PHYSICS**

A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg Â· m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the center ...

*Wednesday, October 31, 2012 by PLEASE HELP*

**Intro to physics**

A space station shaped like a giant wheel has a radius 105 m and a moment of inertia of 5.09 108 kg Â· m2. A crew of 150 lives on the rim, and the station is rotating so that the crew experiences an apparent acceleration of 1g. When 100 people move to the center ...

*Wednesday, October 31, 2012 by Sam*

**physics**

The space probe Deep Space I was launched on October 24, 1998. It's mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of time with the ...

*Tuesday, October 30, 2012 by Anonymous*

**comp.sci-python**

For this option, first ask the user what the maximum number of columns for printing will be. ("How wide should the output be?") Next, the user will enter in a paragraph of text. They may enter it in as many lines as they'd like, and the only way you know they are...

*Monday, October 29, 2012 by seema*

**computer science**

Python 3 For this option, you will first ask "how many rows?", and get a positive integer from them. Next, you will ask "how many columns?", and get another positive integer from them. The next step is to ask for an alignment of each column. They will enter...

*Monday, October 29, 2012 by sand*

**Statistics**

A university has an exclusive agreement with the coffee chain Monobeans. Several students and faculty complained about their lack of baked goods. Looking for a better provider of carbs and caffiene, the university management rents out for one trial semester a space within a ...

*Monday, October 29, 2012 by Tina*

**phyicis**

Homer Hickham and his buddies launched model rockets in the late 1950's when the US was trying to get a rocket into space. If homer launches a rocket from rest and its engine delivers a constance acceleration of 8.2 m/s^2 for 5.0seconds after which the fuel is used up by ...

*Monday, October 29, 2012 by Matt*

**Statistics**

A university has an exclusive agreement with the coffee chain Monobeans. Several students and faculty complained about their lack of baked goods. Looking for a better provider of carbs and caffiene, the university management rents out for one trial semester a space within a ...

*Sunday, October 28, 2012 by Anonymous*

**science**

What property of gases allow them to completely fill whatever space they are in?

*Wednesday, October 24, 2012 by cody*

**information literacy**

1. which article title represents a citation under the news results? A)priceton paleontologist produces evidence for new theory on dinosaurs extinction B)chunk of death dealing with astroid found C)second crater points to killer comets D)extinctions tied to impact from space

*Wednesday, October 24, 2012 by blessing*

**c++**

Distance between two 3-D points. Given two points in space (3-dimensional), find the distance between them. The user will input the coordinates (x,y,z) of the two points and your program will calculate and display the distance between the points.

*Wednesday, October 24, 2012 by amira*

**physics college**

A rocket booster fires in space with a force of 500N and moves the 10kg satellite from rest to motion in 2.1 seconds. Find the acceleration? What is the final speed of the satellite?

*Tuesday, October 23, 2012 by Gee*

**physics**

You are explaining to a friend why the crew of the International Space Station feels weightless while orbiting the Earth. Your friend responds that he thought gravity was just a lot weaker up there. Show that it isnâ€™t so by calculating the acceleration due to...

*Tuesday, October 23, 2012 by paige*

**Science Fair**

Hi, my question is are part 1,2, and 3 different ways you can do the project? There are three parts. Each part should take less than 1 hour. In Part 1, you will stare at a colored object for various amounts of time, then measure how long it takes for the afterimage to ...

*Tuesday, October 23, 2012 by Unknown*

**Physics**

In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer space. From stationary positions they push against each other. Bonzo flies off with a velocity of +1.7 m/s, while Ender recoils with a velocity of −2.7 m/s. (b) Determine the ratio mBonzo/...

*Monday, October 22, 2012 by Elizabeth*

**algebra**

can anyone please help me set this problem up, I can do the math but I have tried for hours... Air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space limits only 125 ...

*Monday, October 22, 2012 by dino*

**math**

air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space limits only 125 passengers will be allowed. how many memberships will maximize the revenue?

*Monday, October 22, 2012 by dino*

**calculus**

A health club offers memberships at the rate of $300, provided that at least 50 people join. For each member in excess of 50, the membership fee will be reduced by $2 for all members. Due to space limitations, at most 125 memberships will be sold. How many membersips should ...

*Monday, October 22, 2012 by dino*

**Math**

Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths Surface Space shuttle completes 220 degrees of a Revolution around earth in one day What is the average speed of the space Shuttle

*Sunday, October 21, 2012 by Chris*

**Math**

Radius of earth 3,959 miles Space shuttle orbits 200 miles above earths Surface Space shuttle completes 220 degrees of a Revolution around earth in one day What is the average speed of the space Shuttle

*Sunday, October 21, 2012 by Chris*

**Physics**

On earth, two parts of a space probe weigh 18300 N and 4440 N. These parts are separated by a center-to-center distance of 5.11 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far...

*Friday, October 19, 2012 by Orla*

**Physics**

Calculate a space shuttle territory 250 km above Earth's surface. Earth's mass is 6.0 * 10^24kg and its radius is 6.38 * 10^6 m (6380km)

*Thursday, October 18, 2012 by Darren*

**math**

A group medical practice has 40,000 patients. Charts vary in thickness from 1/4 to 1 inch thick. The average of all charts is 1/2 inch thick. Using the average 1/2 inch thickness, how many inches of shelf space will be required for 40,000 charts?

*Tuesday, October 16, 2012 by Tracy*

**science**

Also is did cassini send out a space probe or satellite?

*Tuesday, October 16, 2012 by Slippy*

**Physics**

An asteroid with mass m = 1.85*10^9 kg comes from deep space, effectively from infinity, and falls toward Earth. How much work would have to be done on the asteroid by friction to slow it to 550 m/s by the time it reached a distance of 1.50*10^8 m from Earth?

*Tuesday, October 16, 2012 by Kaitlyn*

**Math**

24 (6-)-1 divided by-5. There is a big space between the 24 and the -6. I don't know if I multiply 24x-6 or do I multiplying-6x-1and then times it by 24. Please help

*Tuesday, October 16, 2012 by Cherie*

**math**

The question is 24 (-6)-1/-5 I don't understand what you do with the 24. I got -145/-5=29 I multiplied 24 by -6 but I don't think this is right there is a big space between the 24 and the other numbers.

*Friday, October 12, 2012 by Cherie*

**Communication**

Which of the following is NOT a technique for emphasizing material in a resume? A. Presenting it in vertical lists B. Including it as part of a lengthy paragraph C. Offsetting it with white space D. Positioning it as the top of a page

*Monday, October 8, 2012 by Sharon*

**Science**

How many minutes are required for a radio signal to travel from Earth to a space station on Mars if Mare is 7.83 x 10 to the 7th power km?

*Monday, October 8, 2012 by Margaret*

**Physics**

To create artificial gravity, the space station shown in the drawing is rotating at a rate of 1.60 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.00. Each chamber A simulates an acceleration due to gravity of 9.60 m/s2. Find values for (a) rA, (b...

*Saturday, October 6, 2012 by Redgy22*

**PLEASE read over essay**

I did this for chemistry. Are the examples and grammar correct? THANK YOU SO MUCH TO WHOEVER ACTUALLY TAKES THE TIME TO READ THIS I LOVE YOU OMG. Naming Chemical Compounds By: Bryce R The periodic table is made up of the most simplest and complex elements. These elements ...

*Thursday, October 4, 2012 by Bryce*

**physics**

A space traveler weighs 635 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?

*Thursday, October 4, 2012 by Donald*

**physics**

The Hubble Space Telescope orbits Earth 621 km above Earth's surface. What is the period of the telescope's orbit? Give answer with 5 significant figures.

*Wednesday, October 3, 2012 by Katie*

**science**

how many days would it take to fly to Jupiter (from Earth) in a space shuttle at 45,000 miles per hour? The minimum distance between the Earth and Jupiter is 365 million miles.

*Wednesday, October 3, 2012 by emma*

**Physics**

Each of the space shuttle's main engines is fed liquid hydrogen by a high-pressure pump. Turbine blades inside the pump rotate at 635 rev/s. A point on one of the blades traces out a circle with a radius of 0.021 m as the blade rotates. (a) What is the magnitude of the ...

*Tuesday, October 2, 2012 by Jackson Kerr*

**space**

What causes the rings around the equators of Saturn and jupiter

*Tuesday, October 2, 2012 by Gabi*

**Physical science**

I need help on how to set up a formula for 27c and 750 mm hg,a sample of hydrogen occupies 5.00 l how much space will it occupy at stp

*Tuesday, October 2, 2012 by Glenda*

**Uni Physics**

A 67 kg astronaut (Jeff), an 88 kg astronaut (Brett) and a 17 kg rock are tied together by a light rope during a space walk. The distance between Jeff and the rock is 5.0 m, the distance between Brett and the rock is 2.0 m. Find the position of the centre of mass of the system...

*Tuesday, October 2, 2012 by David Gia*

**stor**

Suppose that you flip a fair coin (P(H)=P(T)=1 2 ) three times and you record if it landed on heads, H, or tails, T. (a) What is the sample space of this experiment? What is the probability of each event? (b) [1 pt] Let X be the number of times that you observe heads. What ...

*Saturday, September 29, 2012 by ami*

**Math**

Pool tables are rectangular, and their length is twice the width. Find the dimensions of a pool table if it occupies 162 ft2 of floor space

*Friday, September 28, 2012 by Tiff*

**7th grade Science help**

1. _______ is energy that flows from an object with a higher temperature to an object with a lower temperature. (1 point) Heat Radiation Potential Chemical 2. The transfer of energy that occurs when molecules bump into one another is called _____. (1 point) radiation ...

*Wednesday, September 26, 2012 by Delilah*

**7th grade Art**

1. This element of art is used to create depth in a picture. (1 point) shape pattern space texture 2. This technique is used to angle the lines of roads and buildings in a picture. (1 point) aeriel perspective vanishing point linear perspective atmospheric perspective 3. This ...

*Wednesday, September 26, 2012 by Delilah*

**Pre-Algebra-math**

Mr.jones bought 20 yards of fencing to make pen for dog pen will be in rectangle shape, the fencing comes in 1 yard section, wants the MAXIMUM areafor his dog to run, what dimension will give the pen the biggest space for dog to run?? then what r the dimensions for the maximum...

*Tuesday, September 25, 2012 by Kim*

**Pre-Algebra-math**

Mr.Jones bought 20 yards of fencing to make a pen for his dog, the pen will be in a retangle shape fencing comes in 1-yard sections,he want the biggest space possible for his dog to run. What are the dimensions of the maximum space of the pen he can get??

*Sunday, September 23, 2012 by Kim*

**Account**

Use the following identification codes to indicate the effects of each transaction on the accounting equation: I = Increase; D = Decrease; NE = No Effect. Write your answers in the space provided under the accounting equation, being sure to include an identification code for ...

*Sunday, September 23, 2012 by Anton*

**physics**

A projected space station consists of a circular tube that will rotate about its center (like a tubular bicycle tire) as shown in the figure . The circle formed by the tube has a diameter of about 1.1 km. What must be the rotation speed (revolutions per day) if an effect equal...

*Saturday, September 22, 2012 by kim*

**Physics**

In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A human can stand an ...

*Friday, September 21, 2012 by Kelly*

**earth**

a space traveller determines the radius of a planet to be half of earth . After landing on its surface , he finds the acceleration due to gravity to be twice of that of surface of earth. Find the ratio of mass of planet to the earth

*Wednesday, September 19, 2012 by hanu*

**Physics**

Consider a space pod somewhere between earth and the moon, at just the right distance so that the gravitational attractions to Earth and Moon are equal. Is this location nearer Earth or Moon?

*Tuesday, September 18, 2012 by Anonymous*

**Physics**

The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of time with the ...

*Tuesday, September 18, 2012 by StressedStudent*

**stor**

Twitter: Suppose that the population proportion of Internet users whosay they use Twitter or a similar service to post updates about themselves or to see updates about others is 19%. Think about selecting random samples from a population in which 19% are Twitter users. a) ...

*Monday, September 17, 2012 by ami*

**Physics**

In deep space (no gravity), the bolt (arrow) of a crossbow accelerates at 187m/s^2 and attains a speed of 114m/s when it leaves the bow. For how long is it accelerated? Answer in units of m/s What speed will the bolt have attained 2.8 sec after leaving the crossbow? Answer in ...

*Sunday, September 16, 2012 by Emily*

**Math**

a rectangular box is 2 cm high, 4cm wide and 6 cm deep. Michelle packs the box with cubes, each 2 cm by 2cm by 2cm, with no space left over. How many cubes does she fit in the box?

*Tuesday, September 11, 2012 by Marshall*

**adv comp**

how can i put this sentence where I am not talking to the reader, just describing the surroundings. As one starts to stride to the right,they come upon a small stream and canâ€™t get past the reeking smell of unknown origins. my whole paper is suppose to be ...

*Tuesday, September 11, 2012 by rebekah*

**physics**

You are on a train traveling east at speed of 17.0 m/s with respect to the ground. 1) If you walk east toward the front of the train, with a speed of 1.1 m/s with respect to the train, what is your velocity with respect to the ground? 2) If you walk west toward the back of the...

*Monday, September 10, 2012 by ali*

**Language arts**

The boys on the soccer team will go across the street, through the valley, and into the park. What is the adjective phrase? Beyond that hill sits a house without a roof. adverb phrase is millions of stars form a galaxy,and between any two stars there are light years of space. ...

*Monday, September 10, 2012 by completeidiot*

**physics**

The Space Shuttle travels at a speed of about 7.88E+3 m/s. The blink of an astronaut's eye lasts about 107 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?

*Sunday, September 9, 2012 by Anonymous*

**Math**

It is recommended that there be at least 7 square feet of work space for every person in a conference room. A certain conference room is 13' by 16'. Find the maximum number of people the room can accommodate.

*Saturday, September 8, 2012 by Cashawn*

**Math**

If x = xo and x = x1 are both vector solution of Ax=b, then x1 - xo is in the Null Space of A. True or False?

*Friday, September 7, 2012 by Anonymous*

**Linear Algebra**

Show that the functions (c1+c2sin^2x+c3cos^2x) form a vector space. Find a basis of it. What is its dimension?

*Thursday, September 6, 2012 by diamon*

**physics**

A runner is jogging at a steady 2.3 km/hr. When the runner is 8.4 km from the finish line, a bird begins flying from the runner to the finish line at 9.2 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies back to the runner...

*Tuesday, September 4, 2012 by argelia*

**math**

Assume that the box contains 5 balls: 1 yellow, 2 green, and 2 red. Balls are drawn in succession without replacement, and their colors are noted until a yellow ball is drawn. Q: How many outcomes are there in the sample space?

*Tuesday, September 4, 2012 by Michael*

**Algebra**

The floor of a one-story building is 14 feet longer than it is wide (see figure). The building has 1472 square feet of floor space. a) Write a quadratic equation for the area of the floor in terms of w. (b) Find the length l and width w of the floor.

*Sunday, September 2, 2012 by Kristi*

**Space - Sally Ride - Accomplish**

What did Sally Ride accomplish and what did it mean for us? I know she was the first women in space, but what did she do in space?

*Friday, August 31, 2012 by Anonymous*