Thursday

July 31, 2014

July 31, 2014

**Recent Homework Questions About Outer Space**

Post a New Question | Current Questions

**ET3034TUx Solar Energy**

The width of the space charge region at a p-n junction is reduced by applying a voltage bias over the p-n junction. What is the correct statement on both the bias voltage and the p-n junction? a)The voltage is a forward bias and the diffusion of the majority charge carriers ...
*Wednesday, October 16, 2013 at 2:18pm*

**Math**

Andie is designing a rectangular play space for her dogs. The length of the play space is 7ft. and the width is 6ft. The new space will have a length and width twice the dimensions of the current space. She needs to purchase sod to cover the ground inside the play space. Write...
*Tuesday, October 15, 2013 at 10:25pm*

**Chemistry**

Pu-238 is radioactive by alpha-decay (half-life 87.7 y). Each decay releases 5.6 MeV of energy. Pu-238 is sometimes used to power space probes. If all the decay energy can be converted to electric power, what mass of Pu-238 would be required to power a 22 kW space probe for at...
*Tuesday, October 15, 2013 at 8:44pm*

**Physics**

A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the figure. As the station rotates, an astronaut in chamber A is moved 1.50 x 102 m along a circular arc. How far along a circular arc is an astronaut in chamber B moved during ...
*Tuesday, October 15, 2013 at 5:22pm*

**College Physics**

Although they don’t have mass, photons—traveling at the speed of light—have momentum. Space travel experts have thought of capitalizing on this fact by constructing solar sails—large sheets of material that would work by reflecting photons. Since the ...
*Sunday, October 13, 2013 at 8:21pm*

**physics**

Over a certain region of space, the electric potential is V = 5x - 6x2y + 2yz2. Find the expression for the x component of the electric field over this region. (Use x, y, and z as necessary.) Find the expression for the y component of the electric field over this region. Find ...
*Sunday, October 13, 2013 at 4:04pm*

**Intro to Computers**

In computing, a single byte represents a. one unit of disk space b. a pixel on the monitor c. an on or off electronic switch d. a character of data
*Friday, October 11, 2013 at 6:29pm*

**math**

Space the length of one day on venus is 35 earthdays write a product and an exponent .
*Thursday, October 10, 2013 at 1:01pm*

**math**

Kaitlyn is making a necklace. She has round beads that are each 1/2 inch wide. She has an 8 inch piece of string. She wants 1/2 inch of space at each end of the string. How many round beads will she need?
*Wednesday, October 9, 2013 at 9:43pm*

**Chemistry**

In the space below, show your work for determining the volume, mass, and moles of baking soda Moles of baking soda reacted Mass of baking soda reacted (g) Volume of baking soda reacted 140 ml of vinegar 5 tsps of baking soda were used
*Sunday, October 6, 2013 at 10:10am*

**Algebra 1**

Tall Buildings You made a model of the Space Needle in Seattle, Washington, for a report on architecture in the United States. You used a scale of 1 in.:50 ft. Your model is 12.1 inches tall. Estimate the actual height of the Space Needle. Is it 605
*Saturday, October 5, 2013 at 1:18pm*

**Physics**

Many people mistakenly believe that the astronauts who orbit the Earth are "above gravity." Calculate g for space shuttle territory, 290 kilometers above the Earth's surface (dashed line in sketch). Earth's mass is 6 1024 kg, and its radius is 6.38 106 m (...
*Saturday, October 5, 2013 at 1:19am*

**Math**

A yard measures a x b feet the swingset space is a x c feet how much lawn is left after swing set
*Tuesday, October 1, 2013 at 9:05pm*

**Science**

An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takes a 1kg "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. What speed does the astronaut ...
*Tuesday, October 1, 2013 at 6:26pm*

**Astronomy**

Now imagine you’re an astronomer on Earth looking at the spectrum of an object in space. In the spectrum you are looking for the so-called Lyman-alpha line of hydrogen which occurs at a wavelength of = 122 nm. In your telescope, you observe the Lyman-...
*Tuesday, October 1, 2013 at 5:18pm*

**Astronomy**

Why didn’t the Universe collapse into a black hole in the past when there was so much matter in such a small space? (a) Most of the particles in the early Universe were unstable and decayed before a black hole could form. By the time only stable particles were left (...
*Tuesday, October 1, 2013 at 5:13pm*

**Chemistry**

Currently the removal of CO2 is too low and it has been proposed to change the deep well aeration with a co-current tower aerator. select the advantages of using deep well aeration from the below: Very high O₂ transfer within an exceptionally small space Very good ...
*Tuesday, October 1, 2013 at 1:21pm*

**~Art~**

1) When an individual or institution recognizes the design and beauty of an object or artifact and designates it as art (1point) Commercialism Institutionalism*** Socialism Expressionism 2) A person who uses imagination and skill to communicate ideas in visual form (1point) ...
*Tuesday, October 1, 2013 at 12:04pm*

**Chemistry**

A tubular fluorescent lamp in a fully evacuated supply compartment on the international space station was originally filled with a small amount of mercury vapour. When the lamp began to flicker the astronauts complained there was a tiny hole in the tube. They measured that the...
*Tuesday, October 1, 2013 at 12:48am*

**Geometry**

The Seattle space needle is 604 feet tall. a model of the building is 48 inches tall. what is the ratio of the height of the model to the height of the actual space needle? A. 151:1 B 151:12 c.1:151 D.12:151
*Monday, September 30, 2013 at 4:54pm*

**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? The medical practice uses 48-...
*Saturday, September 28, 2013 at 10:46pm*

**physics**

At time t=0, a 2150kg rocket in outer space fires an engine that exerts an increasing force on it in the +x-direction. This force obeys the equation Fx=At2, where 1.45s is time, and has a magnitude of 781.25N when t = 1.45s . Find the SI value of the constant A.
*Saturday, September 28, 2013 at 8:58am*

**science**

An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takes a 1kg "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. What speed does the astronaut ...
*Thursday, September 26, 2013 at 11:58am*

**Physics 102**

Why do the passengers in high-altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?
*Wednesday, September 25, 2013 at 5:48pm*

**science**

an astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takesa 1kr "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. what speed does the astronaut ...
*Wednesday, September 25, 2013 at 3:23pm*

**Qvntitative Methods**

CASE STUDY: 1 The bulbs manufactured by a company gave a mean life of 3000 hours with standard deviation of 400 hours. If a bulb is selected at random, what is the probability it will have a mean life less than 2000 hours? Question: 1) Calculate the probability. 2) In what ...
*Wednesday, September 25, 2013 at 6:19am*

**Earth Space(soon please!)**

Hypothetically, how hot do you think a green star would be?
*Monday, September 23, 2013 at 7:48pm*

**PSY 102**

I REALLY NEED HELP BADLY WITH THESE QUESTIONS SOMEONE PLS HELP..... Why do the passengers in high-altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?
*Monday, September 23, 2013 at 6:48pm*

**science. -_-**

Okk so im not asking for answers, i just need somone to expplain this homework to me! I dont get it what so ever. So the homework tittle is Weight in space. So it has a whole discripition in wjich i will write dpwn for you. The paper says: Gravity is an invisible force that ...
*Monday, September 23, 2013 at 4:35pm*

**Fcc**

Using the average 1/2-inch thickness, how many inches of shelf space will be required for 40,000 charts?
*Monday, September 23, 2013 at 8:58am*

**Physics**

On earth, two parts of a space probe weigh 17300 N and 3260 N. These parts are separated by a center-to-center distance of 19.4 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, September 20, 2013 at 2:42pm*

**College Physics 1**

A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe, starting from rest, takes...
*Tuesday, September 17, 2013 at 12:46pm*

**Physics**

A girl delivering newspapers covers her route by traveling 2.00 blocks west, 5.00 blocks north, and then 8.00 blocks east. (a) What is her resultant displacement? (only enter the angle of the resultant in the answer space below, not the distance) enter it as a positive angle, ...
*Monday, September 16, 2013 at 7:32pm*

**Physics**

A girl delivering newspapers covers her route by traveling 2.00 blocks west, 5.00 blocks north, and then 8.00 blocks east. (a) What is her resultant displacement? (only enter the angle of the resultant in the answer space below, not the distance) enter it as a positive angle, ...
*Monday, September 16, 2013 at 6:56pm*

**Earth Space**

What is fission? How is Einstein's theory of special relativity expressed? What does each letter stand for?
*Monday, September 16, 2013 at 5:24pm*

**physics**

A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe, starting from rest, takes...
*Sunday, September 15, 2013 at 9:56pm*

**Physical Science**

a rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Earth to the Moon, which is 381,000 km?
*Sunday, September 15, 2013 at 11:52am*

**Math ms. Sue please help**

Carrie decided to walk the 8 3/10 mi from her house to the city pool. In the first hour, she walked 2 4/5 mi. In the second hour she walked 3 9/10 mi. How much farth did she have to go? I got 1 3/5 mi is that correct? Donald duck set a record when he caught a salmo that ...
*Wednesday, September 11, 2013 at 5:47pm*

**Physics**

The Space Shuttle travels at a speed of about 9.11 x 103 m/s. The blink of an astronaut's eye lasts about 93.4 ms. How many football fields (length = 91.4 m) does the Space Shuttle cover in the blink of an eye?
*Tuesday, September 10, 2013 at 4:28pm*

**Physics**

Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 35 m/s a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time ...
*Saturday, September 7, 2013 at 6:46pm*

**English**

1. What type of context clue is provided for the italicized word in the following sentence? "The ice, snow, freezing wind, deep ice cracks, called crevasses (this is italicized), and lack of oxygen are constant threats to climbers’ safety and health." a) example...
*Friday, September 6, 2013 at 5:07pm*

**main ideas**

Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants stays warm because sunlight and heat coming through the glass roof are mostly trapped. The heat doesn't radiate back into the atmosphere ...
*Friday, September 6, 2013 at 2:30pm*

**Social Studies**

A shopper choosing a new oven for his home would likely make a decision based on a scarcity of which of the following? a) money b) time c) stores d) space I think it is d.
*Thursday, September 5, 2013 at 5:18pm*

**math**

Recently a census was taken on space station Gamma. Of the 100 residents interviewed, 75 traced their ancestry to the planet Omicron, 85 traced their ancestry to the planet Omega and 60 residents traced their ancestry to both planets. How many residents had ancestors from ONLY...
*Tuesday, September 3, 2013 at 10:33pm*

**Economics**

1. Illustrate the following using demand and supply graphs. a) The market price of a basic digital cell phone fell due to increased production. b) In 2002, unusually bad weather caused a reduction in the cranberry harvest causing the prices to increase from $22 to $25 for a ...
*Monday, September 2, 2013 at 9:44pm*

**math**

In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard?
*Friday, August 30, 2013 at 12:33pm*

**5th grade math**

suppose you made your garden 5ft wide... what would its length be? what would its area be? what would be the area of the left over space in the yard.
*Wednesday, August 28, 2013 at 11:10pm*

**geometry**

Bill plans to put a fence around a square plot of ground for a garden. a. if he wants to put 15 post on each side of the square, how many post will he need for his fence? 58 is this correct b. If he plans to space the posts evenly one yard apart on each side, how many square ...
*Wednesday, August 28, 2013 at 11:49am*

**physics**

Two large horizontal metal plates are separated by 4mm. The lower plate is at a potential of (-)6v.What potential should be applied to the upper plate to create field strength of 4000v/m upwards in the space between the plates?(a)(+)22(b)(+)10(c)(-)10(d)(-)22
*Wednesday, August 28, 2013 at 2:01am*

**Earth Space**

Do the phases of the moon affect how much of the moon is illuminated? I said yes because thats what causes us to have the different shapes/phases of the moon. Whichever parts are lit up. Is the following sentence true or false? The cycle of the phases takes about two days ...
*Monday, August 19, 2013 at 4:27pm*

**math**

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace =1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of obtaining a total of ...
*Sunday, August 18, 2013 at 1:38am*

**math**

Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of obtaining a total of...
*Saturday, August 17, 2013 at 11:36pm*

**Math**

Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probabilit of obtaining a total of 5...
*Saturday, August 17, 2013 at 8:23pm*

**Earth Space (In desperate need) **

My teacher didnt have time to finish the lesson day, and I can't find the answers anywhere online or in my book. What are 2 main ways in which the earth moves? What does each movement cause? I have it rotates on its axis which causes seasons, but I cant think of other ones...
*Thursday, August 15, 2013 at 4:07pm*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard? This seems like a really ...
*Thursday, August 15, 2013 at 12:18pm*

**physics (please help elena)**

Three planets interact with one another through their mutual gravitational forces only; they are isolated in free space and do not interact with any other bodies. They orbit around an axis going through the center-of-mass of the system and perpendicular to the triangle formed ...
*Monday, August 12, 2013 at 2:53pm*

**Earth Space**

Which branches of earth science would the hydrosphere interact with? I said biosphere, atmosphere, and geosphere. Is that correct?
*Wednesday, August 7, 2013 at 4:23pm*

**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)? A. 8 square feet ...
*Tuesday, August 6, 2013 at 10:59am*

**Chem**

A student was performing an extraction procedure of o-Xylene from water into octanol. The total mass of o-Xylene was 0.10 gram (molecular weight 106.2 g/mole). The volume of water was 990mL and volume of octanol 10 mL. There is a head space of 200 mL above the solution and it ...
*Wednesday, July 31, 2013 at 9:19pm*

**physics**

Our muscles atrophy when there is no gravitational force. On long space flights this is a problem, which is why astronauts exercise. On very long space flights it might be advisable to simulate gravity. Your space ship is a long cylinder of radius 100 m that spins about its ...
*Monday, July 29, 2013 at 5:37am*

**problem solving**

How much space does the dining area take up? 100 guests, each guest requires 3m2 in the dining area, the average mass of each guest is 65 kg, and the average density of the dining area is 10kg/m2 How I can resolve this problem?
*Sunday, July 28, 2013 at 6:52pm*

**problem solving**

100 guests each guest needs 3 m2 of space average density of the area is 10kg/m2. how much space does the dining room take up?
*Sunday, July 28, 2013 at 3:59pm*

**Data Structures and Algorithms**

Given integers R,M with M≠0, let S(R,M) denote the smallest positive integer x satisfying the congruence Rx≡1(mod M) if such an x exists. If such an x does not exist, put S(R,M)=0. Each line of this text file contains a pair of space separated integers representing...
*Wednesday, July 24, 2013 at 5:46am*

**physics**

The sun radiates like a perfect blackbody with an emissivity of exactly 1. (a) Calculate the surface temperature(K) of the sun, given it is a sphere with a 7.00 multiplied by 108 m radius that radiates 3.80 multiplied by 1026 W into 3 K space. (b) How much power(W/m^2)does the...
*Sunday, July 21, 2013 at 3:01am*

**Physics**

The sun radiates like a perfect blackbody with an emissivity of exactly 1. (a) Calculate the surface temperature(K) of the sun, given it is a sphere with a 7.00 multiplied by 108 m radius that radiates 3.80 multiplied by 1026 W into 3 K space. (b) How much power(W/m^2)does the...
*Saturday, July 20, 2013 at 10:05pm*

**math**

How would you show the work for this. Bills locker is 30 inches tall, 10 inches wide, and 14 inches deep. If his books take up 1,545 in. of space, how much space does he have left to hang his coat and bookbag? Thank you
*Friday, July 19, 2013 at 9:53am*

**Physics**

A 170 kg astronaut (including space suit) acquires a speed of 2.75 m/s by pushing off with his legs from a 2400 kg space capsule. What is the average change in speed in meters/second of the space capsule?
*Friday, July 12, 2013 at 10:17pm*

**statistics**

MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number from 0 to 9, please ...
*Friday, July 12, 2013 at 9:31am*

**statistics**

MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number from 0 to 9, please ...
*Friday, July 12, 2013 at 9:29am*

**writing**

1)Al:(who's,whose)car is in my parking space? 2)Ben:(it's,its)Fred's. 3)Al:(know,no,his car is red.It might be the Jones'. 4)Ben:(their,there,they're)car is green.(here,hear)come Bob and Tony. 5)Tony:Hi!Isn't my (knew,new)car(grate,great)? 6)Al:(you'...
*Thursday, July 11, 2013 at 3:32pm*

**College Physics**

1. In a region of two-dimensional space, there are three fixed charges: +1 mC at (0, 0), −2 mC at (18 mm, -3 mm), and +3 mC at (-8 mm, 12 mm). What is the net force on the −2-mC charge? Find the magnitude and direction (counterclockwise from the x-axis).
*Tuesday, July 9, 2013 at 1:46pm*

**Statistics/Probability**

1. Two roommates, roommate A and roommate B, are about to go cruising with a mutual friend and are arguing over who gets to sit in the front seat. Roommate A suggests a game of rock-paper-scissors to settle the dispute. Consider the game of rock-paper-scissor to be a ...
*Sunday, July 7, 2013 at 11:34am*

**probability**

For a family with 2 children, the sample space indicating boy (B) or girl (G) is BB, BG, GB, and GG. If each of the outcomes is equally likely, find the probability that the family has 2 girls, given that the first child is a girl.
*Saturday, July 6, 2013 at 1:25am*

**physics**

The Space Shuttle travels at a speed of about 5.45 x 103 m/s. The blink of an astronaut's eye lasts about 111 ms. How many football fields (length = 91.4 m) does the Space Shuttle cover in the blink of an eye?
*Friday, June 28, 2013 at 1:54am*

**Math**

You are given the job of laying carpet for a six-story building. At each floor the dimensions of the floor are 75 meters in length by 40 meters in width. A stairwell takes up a space 2.5 m by 1.5 m, and cuts through each floor. If the rest of the floor area is to be carpeted, ...
*Wednesday, June 26, 2013 at 9:17pm*

**physics**

A spaceship is traveling through deep space towards a space station and needs to make a course correction to go around a nebula. The captain orders the ship to travel 2.9 106 kilometers before turning 70° and traveling 2.7 106 kilometers before assuming the path towards ...
*Wednesday, June 26, 2013 at 2:53am*

**Math**

I have a question my brother asked me but I need a math expert. You have two interlocking circles and the radius of circle B goes through the center of circle A and of course the radius of circle A goes through the center of circle B. The radius of each circle is 30 feet. Now...
*Tuesday, June 25, 2013 at 1:03am*

**statistics**

3. Magnetic resonance imaging (MRI) is a process that produces internal body images using a strong magnetic field. Some patients become claustrophobic and require sedation because they are required to lie within a small, enclosed space during the MRI test. Suppose 29% of all ...
*Sunday, June 23, 2013 at 9:50pm*

**physics**

A space vehicle is coasting at a constant velocity of 24.9 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.338 m/s2 in the +x direction. After 53.7 s, the pilot ...
*Sunday, June 23, 2013 at 3:12pm*

**managerial economics**

Using optimization theory, analyze the following quotations: a. “The optimal number of traffic deaths in the United States is zero.” b. “Any pollution is too much pollution.” c. We cannot pull U.S. troops out of Iraq. We have committed to such already.”...
*Friday, June 21, 2013 at 1:34pm*

**Geometry**

A. Derive the distance formula (d) shown below for points A = (x1, y1) and B = (x2, y2). 2 2 1 2 2 1 d = (x − x ) + ( y − y ) Note: Look for an application of the Pythagorean theorem where the red line, segment AB, is the hypotenuse of a right triangle. You can ...
*Monday, June 17, 2013 at 8:37pm*

**space**

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? Show proof of your answer through ...
*Thursday, June 13, 2013 at 1:05am*

**Theather Appreciation**

HENRIK IBSEN 1. Which of these eras is Ibsen considered to be the Father of? a. Symbolism Era b. The Poetic Age c. Romanticism d. Modern Drama 2. Where is Henrik Ibsen from? a. Romania b. Finland c. Ireland d. Norway 3. According to his power point, which was the first poetic ...
*Wednesday, June 12, 2013 at 3:16pm*

**Statistics**

Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.34, P(B) = 0.41, P(A | B) = 0.2
*Saturday, June 8, 2013 at 3:27pm*

**chemistry**

1.what are amber light from traffic signal? 2. what are cosmic rays from outer space?
*Saturday, June 8, 2013 at 2:18am*

**math**

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.) (a) P(two of diamonds) 1 (b) P(two) 2 (c) P(diamond) 3
*Friday, June 7, 2013 at 12:24am*

**English Composition II**

Modern memos expedite the reader’s task by featuring: A. fully developed, very long paragraphs. B. double spaces between each line, without any space between paragraphs. C. lots of boldfaced and/or italicized terms. D. shorter blocks of text.
*Tuesday, June 4, 2013 at 8:55pm*

**chemistry**

You will be presented with three crystallographic directions drawn in a unit cell. Please write the identity of the direction in the space provided below each picture. Use the correct form of brackets for describing a direction, and leave no spaces between numbers. If you must...
*Sunday, June 2, 2013 at 11:43am*

**Physics 1 College Level**

If D = 3204 meters and d = 1247 meters in the figure, what is the magnitude of the force on the space ship to the nearest MN? Consider all three to be point masses. I'm not even sure to begin with this question. Any help will be much appreciated!
*Saturday, June 1, 2013 at 4:09pm*

**chemistry**

You will be presented with three crystallographic directions drawn in a unit cell. Please write the identity of the direction in the space provided below each picture. Use the correct form of brackets for describing a direction, and leave no spaces between numbers. If you must...
*Saturday, June 1, 2013 at 8:15am*

**chemistry**

You will be presented with three crystallographic directions drawn in a unit cell. Please write the identity of the direction in the space provided below each picture. Use the correct form of brackets for describing a direction, and leave no spaces between numbers. If you must...
*Saturday, June 1, 2013 at 1:22am*

**math**

Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.) Red...
*Thursday, May 30, 2013 at 11:15pm*

**english 2**

The paragraph below needs to be made more coherent. Use repetition, synonyms, and pronouns to link the sentences. Type the improved paragraph in the space provided on the following page Many cities are easily distinguished by their skylines. In such cities--New York and Paris...
*Thursday, May 30, 2013 at 2:22pm*

**Math/Statistics**

A and B are events defined on a sample space, with the given probabilities. Find P(A and B). (Give your answer correct to two decimal places.) P(A | B) = 0.43 and P(B) = 0.75
*Wednesday, May 29, 2013 at 10:44pm*

**Math/Statistics**

Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24
*Wednesday, May 29, 2013 at 10:43pm*

**physics**

The Sun radiates about 4 × 1026 J of energy into space each second. How much mass is released as radiation each second? The speed of light is 3 × 108 m/s. Answer in units of kg
*Wednesday, May 29, 2013 at 1:19am*

**Math/Statistics**

Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24
*Tuesday, May 28, 2013 at 4:21pm*

**math**

A and B are events defined on a sample space, with the given probabilities. Find P(A and B). (Give your answer correct to two decimal places.) P(A | B) = 0.43 and P(B) = 0.75
*Tuesday, May 28, 2013 at 4:20pm*

**Statistics**

Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.) Red...
*Monday, May 27, 2013 at 10:14am*

**Statistics**

Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your answers as fractions.) Red...
*Sunday, May 26, 2013 at 3:28pm*

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