Wednesday

April 1, 2015

April 1, 2015

Total # Posts: 1,712

**earth science**

how did the extinction of the dinasaurs allow for the evolution of more complex creatures, such as human beings?
*January 12, 2011*

**physics**

An electron accelerates from rest through a potential difference of 184 V. What is its final speed? An electron that has a horizontal initial speed of 4.50 106 m/s enters a region that has an electric field of 120 V/m pointing vertically upward. How long does the electron take...
*January 12, 2011*

**physics**

The work done by an electric force in moving a charge from point A to point B is 2.76 10-3 J. The electric potential difference between the two points is VA − VB = 47.5 V. What is the charge
*January 12, 2011*

**physics**

Point A is at a potential of +250 V, and point B is at a potential of -150 V. An á-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An á-particle starts from rest at A and accelerates toward B. When ...
*January 12, 2011*

**Math**

in 1992, the life expectancy of males in a certain country was 69.8 years. in 1999, it was 72.4 years. Let E represent the life expectency in year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is E(t) =_ t+_ Use the function ...
*January 11, 2011*

**Algebra**

What is the slope of the line given by 4x = 0 by 5y = 0? How do I solve this?
*January 10, 2011*

**physics**

The magnitude of each of the charges in the figure below is 8.75 10-12 C. The lengths of the sides of the rectangles are 2.94 cm and 4.80 cm. Find the magnitude of the electric field at the center of the rectangle in the figures below. both pictures are rectangles. I dont know...
*January 10, 2011*

**physics**

An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of -6.75 µC at this spot? magnitude?
*January 8, 2011*

**physics**

((3.54 10-9 kg)(9.8))/ 8000 N/C and it gave me the wrong answer so im not sure what im doing wrong.
*January 8, 2011*

**physics**

A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8000 N/C. The mass of the water drop is 3.54 10-9 kg How many excess electrons or protons reside on the drop?
*January 8, 2011*

**physics**

Two charges are placed on the x axis. One of the charges (q1 = +9.4 µC) is at x1 = +3.1 cm and the other (q2 = -22 µC) is at x2 = +9.3 cm. Find the net electric field (magnitude and direction) at x = +6.5 cm. (Use the sign of your answer to indicate the direction ...
*January 8, 2011*

**physics**

im getting the 26-k(q*q2)/(.37)^2=24 so 24-26 gets -2.0. -k(q*q2)/(.27)2=-2.0. and then i solve for q2 but im not geting the right answer.
*January 6, 2011*

**physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -22 µC at y1 = +0.24 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +7.7 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other ...
*January 6, 2011*

**physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -22 µC at y1 = +0.24 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +7.7 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other ...
*January 6, 2011*

**Algebra**

How do I find the intercept of this equation? -4x = 2y-1
*January 3, 2011*

**law**

Over the past decade, some countries have shown high crime rates while other countries have lower crime rates. For example, the lowest homicide rates in 2000 existed in Saudi-Arabia and Japan, while France and Germany had the highest homicide rates. Their rates, however, were ...
*January 2, 2011*

**law**

What are some of the ways that organized crime impacts you and a community and/or city (of your choice) directly? (This element will account for 20% of your grade.) What are some of the ways that law enforcement agencies are working to reduce these types of organized crime in ...
*January 2, 2011*

**Finance**

You made a bank deposit in UK sterling that matures next December. The interest rate was 10% while home rates are only 4%. You thought you would be going to London at the end of the year, but now you cannot. The outlook for pounds is depreciation, but you will lose all of your...
*December 20, 2010*

**Geometry**

What best describes the relationship between line y=2+8 and line 4y=8x+16 A. Parallel B. Perpendicular C. Skew D. Equivalent E. Intersecting
*December 12, 2010*

**physics**

why is static friction bigger than kinetic friction
*December 9, 2010*

**algebra**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 mph and train B at 63 mph. Train A passes a station at 11:10 AM. If train B passes the same station at 11:40 AM, at what time will train B catch up to train A? When will train B ...
*December 9, 2010*

**Math**

Translate: The product of 16% and some number?
*December 9, 2010*

**Algebra**

The equation y=-1777x+27,153 can used to predict the number of y gun deaths in the United States x years after 2000 that is x=0 corresponds to 2000, x=3 corresponds to 2003, x=6 corresponds to 2006, and so on. Predict the number of gun deaths in 2006 and 2009. In what year ...
*December 9, 2010*

**algebra**

The function H described by H(x)=2.75x+71.48 can be used to predict the height in centimeters of a woman whose humerus is x centimeters long what is the height of a woman whose humerus is 35 centimeters long?
*December 9, 2010*

**5th grade**

if a line is measured as 1 and 4/8 inches long explain how you could simplify the measurement
*December 8, 2010*

**5th grade**

What is the mode of these # 19,20,32,26
*December 8, 2010*

**math**

What is the mode of these numbers-19,20,32,26.Show me how you got your answer.
*December 8, 2010*

**math**

i squared square root -80
*December 6, 2010*

**adv. alg.**

-i squared square root of -80
*December 6, 2010*

**Calculus**

Find the point on the graph of y=2x-4 that is closest to the point (1,3). (Optimization equation)
*December 6, 2010*

**algebra**

I'm doing functions, and I don't know how I'm solving this equation wrong? the equation is y = (x-2)^2 - 1 when I graph it, the shape is supposed to be a parabola. I'm using -2,-1,0,1, and 2 as my X values. But I'm getting 15, 8, 3, 0, and -1 for my Y ...
*December 6, 2010*

**geometry**

the area of a triangle is 147 square inches and its height is 1.5 times its base. find the base and the height of the trianle.
*December 5, 2010*

**physik**

was kÃ¶nnte passieren,wenn man aluminiumstÃ¤be in eine betonmauer einarbeiten wÃ¼rde?
*December 5, 2010*

**math-PLEASE HELP**

Convert to decimal notation. 8.23 * 10^7
*December 5, 2010*

**Engligh 101**

I need help analzying this quote. The fantastic. . . lasts only as long as a certain hesitation. . . [in deciding] whether or not what they [the reader and the protagonist] perceive derives from “reality” as it exists in the common opinion. . . If he [the reader] ...
*December 4, 2010*

**algebra**

I'm doing functions, and I need to write an equation that represents the relationship between X and Y. (1,4),(2,7),(3,10),(4,13) I see what it is, but i don't know how to write it in an equation? it's like adding in the next odd number?
*December 3, 2010*

**Math**

There are 2 opaque bags, each containing red and yellow blocks. Bag 1 contains 3 red blocks and 5 yellow. Bag 2 contains 5 red and 15 yellow. To play the game, you pick a bag and then you pick a block out of the bag without looking. Would a person be more likely to pick a red ...
*December 2, 2010*

**algebra**

I just started learning functions and how to graph them.. but I don't know how to do this problem? x + y = 0. I wasn't sure so I put "No Solution"
*December 2, 2010*

**math **

A whole circle is divided into thirds. Each third is what percent of the whole circle? (No remainder change to fraction)
*December 1, 2010*

**math**

Sir pizza donated 14 pizzas to the sixth grade picnic. How many pizzas were there for each of the three classes of sixth graders? (No remainder change to fration)
*December 1, 2010*

**6th grade**

What are the 5 energy changes when a person jumps upward?
*December 1, 2010*

**physics**

Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 8.6 rad/s. The wheel has a radius of 0.30 m. If you ride the bike for 2070 s, how far would you have gone if the bike could move?
*November 30, 2010*

**chem**

158.5 mL of a AgNO3 solution at 5.0M was combined with a 3.5M CaCl2 solution. 110.5g of AgCl was recovered. Given that the CaCl2 is the limiting reagent, how many milliliters of the 3.5M CaCl2 solution was used? 2 sig figs
*November 29, 2010*

**chem**

A solution is prepared with 50.0 g of HNO3 and 130.0 g of H2O. It has a density of 1.21 g/mL. What is its molarity (M)?
*November 29, 2010*

**Confidentiality in Allied Health**

ok I have written my paper all except for the last 3 questions. I found the previous ones in my textbook or on ama but now im stuck on where to find the resources
*November 28, 2010*

**Math**

A standard number cubes with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 2.
*November 27, 2010*

**Math**

Bert has a bag with 12 blue marbles, 6 green marbles, 8 purple marbles, and 4 red marbles. If he want the probability of picking a blue marble to be 1/2 what should he do?
*November 27, 2010*

**7th grade**

The Diameter of a cone is x, in., the height is 12 in and the volume is 36piin cube what is x
*November 26, 2010*

**BPC110**

Nevermind I understand. Thank you.
*November 26, 2010*

**BPC110**

It schould be "marquee series office 2007." I forgot to put OFFICE in there.
*November 26, 2010*

**BPC110**

It is a book, I do online schooling and have multiple short answers I need to turn in and fix in apa format. It seems different sites show different examples. One shows the location needing to be in there, and others don't. I just went off of the webstite you mentioned.
*November 26, 2010*

**BPC110**

Thank you very much I bookmarked it. Does this look like I am on the right track or does it look wrong? Rutkosky,N., Seguin, D., & Roggenkamp Rutosky, A. (2008). Marquee Series 2007.
*November 26, 2010*

**BPC110**

I am using Marquee Series Office 2007 by Nita Rutosky, Denise Sequin, and Audrey Rutosky Roggenkamp. Thanks in advance!
*November 26, 2010*

**BPC110**

Hello, I am trying to use APA format. I did some short answers and found answers in my text book, and there are 3 authors. I am just very confused if I do in cite notation, put the citation at the very bottom of each question I answered, or what. If someone could help me I ...
*November 26, 2010*

**Math**

What are some Quartile examples?
*November 25, 2010*

**Probability & Odds**

What are some examples of probability and odds?
*November 25, 2010*

**phys**

A 1155-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1915-N crate hangs from the far end of the beam. (a) Using the data shown in the drawing, find the magnitude of the tension in the wire. (b) Using the data shown...
*November 24, 2010*

**physics**

I tried that it didnt get me the right answer. I got -492.
*November 23, 2010*

**physics**

Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27.1° above the horizontal. One child, with a mass of 42.4 kg, is hanging 1.22 m along the branch from the tree trunk. The other child, with...
*November 23, 2010*

**physics**

In 9.2 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation). The line is being reeled in at a constant speed. Determine the angular speed of the reel.
*November 18, 2010*

**physics**

After 10.0 s, a spinning roulette wheel at a casino has slowed down to an angular velocity of +1.74 rad/s. During this time, the wheel has an angular acceleration of -5.1 rad/s2. Determine the angular displacement of the wheel.
*November 18, 2010*

**Math**

Considering the doubling plus one function: The output is 2 times the input, plus one. For example, if the input is 3 the out put is 7. Determine which of the following points are on the graph of the doubling plust one fuction: (2,5), (2,8), (-1,1), (3,4), (-2,-3), (1.5,4), (0...
*November 18, 2010*

**math**

One fourth of a foot is how many inches?
*November 17, 2010*

**math**

One fourth of a foot is how many inches?
*November 17, 2010*

**math**

If you cut a 21 foot ribbon in four equal lengths how many feet long is the length of each ribbon?
*November 17, 2010*

**Math**

(4,8), -2,4 -6,36?? Is this right?
*November 17, 2010*

**Math**

Consider the squaring function: The output is the input times itself. For example, if the input is 3, the output is 9. Determine which of the following points are on the graph of the squaring function: (6,36), (4,8), (-2,4), (-3,-6), (5,25), (6,12), (-6,36)
*November 17, 2010*

**Math**

Considering the doubling plus one function: The output is 2 times the input, plus one. For example, if the input is 3 the out put is 7. Determine which of the following points are on the graph of the doubling plust one fuction: (2,5), (2,8), (-1,1), (3,4), (-2,-3), (1.5,4), (0...
*November 17, 2010*

**physics**

A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.029 rad/s2. How long does it take the wheel to come up to operating speed?
*November 15, 2010*

**Critical Reading**

Elaborate comparisons which are used by advertisers are usually a. fallacies of evidence b. fallacies of language c. newsworthy I am not very sure, I would guess b?
*November 15, 2010*

**Critical Reading**

A useful strategy for identifying and analyzing arguments consists of 1) underlining all signal words 2) locating the conclusion, and 3).. a. locate premises b. identify all bias words c. locate fallacies I think it is c?
*November 15, 2010*

**Critical Reading**

An argument is a message that is being sent with the purpose of persuading us to accept certain information true or false. I would say true. Would that be right?Thank you!
*November 14, 2010*

**social studies**

Opening statement: Give who,what,when,where,why of the topic. The British Navy in the American revolution. In one sentence.
*November 14, 2010*

**math**

Margaret is reading a book that is 288 pages long. If she has already read 96 pages, what percent of the book has she read? And what percent of the book does Margaret have left to read?
*November 14, 2010*

**math**

The johnson family spends $675 a month on rent. if their monthly income is $2,700, what percent of their income goes to rent?
*November 14, 2010*

**math**

margaret is reading a book that is 288 pages long. If she has already read 96 pages,what percent of the book has she read?
*November 14, 2010*

**math**

Carl weighed 180 pounds. After two months of dieting and exercising, he lost 9 pounds. What percent of his weight did he lose?
*November 14, 2010*

**math**

on a loan of $3,500, manny had to pay $280 interest. The interest was what percent of mannys loan?
*November 14, 2010*

**math**

matthew got 36 problems right out of a total of 40 problems on a test. What percent of the problems did he get right?
*November 14, 2010*

**math**

Floria wnats to buy a dress that costs $96. She has saved $60 for the dress. what percent of the price of the dress has she saved?
*November 14, 2010*

**math**

Joaquin makes $600 a week. A raise of $24 a week represents what % of his salary?
*November 14, 2010*

**Math**

There are 24 members in a comunity block association. Only 18 ot them came to their winter meeting. What percent of the members attended the meeting?
*November 14, 2010*

**science**

You need 5.00 grams of AgNO3. You have a 1.25 molar solution. What volume of that solution contains 5.00 grams?
*November 11, 2010*

**chemistry 2**

This was so helpful. Thank you for all of your patience and cooperation!
*November 11, 2010*

**chemistry 2**

I get .66 moles of Benzoic for the first step which is converting the 80 grams of Benzoic into moles. Then i did mass=volume x density and got .3156 kg. what do i do with those two numbers
*November 11, 2010*

**chemistry 2**

How do i use density to calculate mass of ethanol?
*November 11, 2010*

**chemistry 2**

What is the molality of a solution that has 80 grams of Benzoic Acid dissolved in 400 mL of ethanol. The density of ethanol is .789 grams/moles
*November 11, 2010*

**Western Experience since the sixteenth century**

ok thanks for your help
*November 9, 2010*

**Western Experience since the sixteenth century**

Ms. Sue can you please help me? I have been searching for this answer and can not seem to find it. What forces have been made for the increasing unity since the continent of Europe has become tightly integrated? Were the landmarks that charted its path Great Britain, Ireland, ...
*November 9, 2010*

**Algebra-Please help me**

help finding a slope of any object in my house. I cant find anything to measure and how to describe it.
*November 9, 2010*

**Chemistry**

What is delta H for NaOH(s)+1/4O2(g) yielding 1/2Na2O2(s)+1/2H2O(l) ?
*November 8, 2010*

**physics**

In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65 kg. What is the average power provided by the tension in the cable pulling the lift?
*November 8, 2010*

**Religions of the world**

What events and figures have shaped the development of Islam in the United States?
*November 7, 2010*

**us history**

So far, the only thing I can come up with was that he did it for the good of the country, to keep states united.
*November 6, 2010*

**us history**

I'm doing a mock trial defending Andrew Jackson being impeached. He is being indicted for violating states' rights in his dealings with South Carolina in the nullification crisis. I'm finding it extremely hard to find any info to form reasons to defend him.
*November 6, 2010*

**chemistry**

A 50.00ml sample of 0.200M hydroflouric acid (HF) is titrated with 0.200M NaOH. The Pka of HF is 3.452. a) calculate the pH of the HF solution before titration b) calculate the pH after the addition of 20.00ml of NaOH
*November 6, 2010*

**chemistry**

1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the partial pressure of...
*November 6, 2010*

**com/170**

between four types of of writing summary, analysis, synthesis,and evalution
*November 5, 2010*

**Physical Science**

49 y pr 49.2
*October 29, 2010*

**how come no one is helping on physics questions!!!**

Same here.
*October 28, 2010*

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