Friday

October 28, 2016
Total # Posts: 2,330

**calculus**

Use Newton's Law of Gravitation to compute the work W required to launch a 1500 kg satellite vertically to an orbit 800 km high. You may assume that the earth's mass is 5.98*10^24 kg and is concentrated at its center. Take the radius of the earth to be 6.37*10^6 m and ...

*February 3, 2009*

**calculus**

Use Newton's Law of Gravitation to compute the work W required to launch a 1500 kg satellite vertically to an orbit 800 km high. You may assume that the earth's mass is 5.98*10^24 kg and is concentrated at its center. Take the radius of the earth to be 6.37*10^6 m and ...

*February 2, 2009*

**calculus**

Find the numbers b such that the average value of f(x) on the interval [0, b] is equal to 9. f(x)=7+10x-3x^2

*February 2, 2009*

**calculus**

Use integrals to prove that the volume of a sphere of radius R is equal to (4/3)(pi)R^3

*January 31, 2009*

**3rd grade**

Would you capitalize (golden eagles) in this sentence? Do you recall the golden eagles in the forest?

*January 28, 2009*

**math**

He has somewhere between 180 and 198. Here's why. He has 3 albums. You know one album has 54. You know the other album as 72. 54+72 = 126 Now, we also know he has one more albume. The album has anywhere between 54 cards and 72 cards in it. 126 + 54 = 180 126 + 72 = 198 The...

*January 26, 2009*

**Chemistry repost**

A student determined that ethanol was the best solvent to use for a recrystallization based on small scale trials. When the recrystallization was carried out on a larger scale, no crystals were obtained on cooling the hot solution. Why? and how would you overcome this problem???

*January 25, 2009*

**physics**

This is a sum of torque problem. T(left) = F(board)*Distance from left + F(person)*Distance left + F(right)*Distance from left = 0 T(right) = F(board)*dist from right + F(person)*dist from right + F(left)*distance from right. In reality, we are summing clockwise torques with ...

*January 20, 2009*

**CHEM URGENT!!**

If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube of the same material with sides 2.63 cm in length be?

*January 16, 2009*

**math**

The tread depth of the tires on your family's new car is 3/8 inch. you predict that, as a result of driving the car, the change in tire tread depth will be about -3/64 inch per year. A. write a variable expression for the tire tread depth after y years of driving. Use your...

*January 7, 2009*

**9th grade**

A buoyant girl ant

*January 7, 2009*

**collage algebra 1**

y=-2x+b Plug and chug 3=-2(4) 3=-8 -8 both sides -5=b equation is y=-2x-5

*January 5, 2009*

**DR BOB???**

x+3=4x?

*January 5, 2009*

**Math**

Dude that's easy mat 44 ? to -56 +56 will get you to zero and then you add 44. That's what??? 56 +44? Whats the answer?

*January 5, 2009*

**work problem math**

15 seats not sold. 1 % of walk in tickets. The theatre made $3187.5

*January 5, 2009*

**math riddle**

But hey tip..you should try solving the problems in order to get the answers so that you can solve the riddle. IF you go to shcool with just the riddle solved, you will not get full or perhaps any credit for your work, so better off trying to get help for the actual equations ...

*January 5, 2009*

**math riddle**

a quacker? maybe

*January 5, 2009*

**math word problem**

$705 dollars for the walk in tickets $528.75

*January 5, 2009*

**ALGBERA**

[SQRT(2x + 2)] - [SQRT(x - 3)] = 2

*January 5, 2009*

**MRS SUE I NEED YOUR HELP**

Okay I get x+3=4x ?

*January 5, 2009*

**MRS SUE I NEED YOUR HELP**

Cna you help me set it up please?

*January 5, 2009*

**MRS SUE I NEED YOUR HELP**

[SQRT(x + 3)] = 2[SQRT(x)]

*January 5, 2009*

**math**

Well 57/7 is??? 8.1 If you round it. IM just doing the math as far as what you wer doing up there

*January 5, 2009*

**math**

Hey I will most likely by able to help you with this but first 64-7 is not 63

*January 5, 2009*

**EQUATIONS**

CAn you solve for y?

*January 5, 2009*

**EQUATIONS**

9y2 + 16=0

*January 5, 2009*

**3rd grade**

No I probbally wouldnt. at most your probably have 25-30 students in your classrooms. SO the most is about 60 shows, 2 on each foot.. So maybe 100 would be a more reasonable number. Hope this helps.

*January 5, 2009*

**Math**

x+5>1 You subtract 1 from both sides

*January 5, 2009*

**ALEgBRA 2**

Give the domain (that is, possible values of x): 1. y= 2[SQRT(x - 1)] 2. y=-[SQRT(4 - 3x)] + 6

*January 5, 2009*

**quote**

Well it's inevitable that we will feel moments of sadness throughout our lives. However, those thoughts can in a sense fly through one ear and then out the other. However, those thoughts nesting in our hair can represent those thoughts staying permanetly, and over this we ...

*January 5, 2009*

**ALGEBRA**

Ok thank you for your help. Can you help me solve this equation? 9y2 + 16=0

*January 5, 2009*

**ALGEBRA**

Thank you What would be the answer C?

*January 5, 2009*

**5th Grade-Fractions**

a pizza is divided into 5 pieces...4 of the pieces are equal--the other piece is one/half the size of the other. what fraction of the pizza is the smallest piece?

*January 5, 2009*

**Chemistry**

Is Magnesium Oxide reactive? If it is, can you please explain how reactive it is? Thanks so much!

*January 1, 2009*

**Literature**

What is the inciting action of The Scarlet Letter?

*December 28, 2008*

**economics**

What is the rule of 30 and who came up with it? I can't find the answer to this question and was wondering if anyone knew what is was.

*December 21, 2008*

**physics**

A 1 kg object starts 3 meters from the ground on a 24 degree incline with a friction coefficient of 0.12. When it hits the ground, it collides and sticks to a 8 kg object. The coefficient friction on the horizontal surface is 0.24 How far do the objects travel away from the ...

*December 21, 2008*

**physics**

A 1 kg object starts 3 meters from the ground on a 24 degree incline with a friction coefficient of 0.12. When it hits the ground, it collides and sticks to a 8 kg object. The coefficient friction on the horizontal surface is 0.24 How far do the objects travel away from the ...

*December 21, 2008*

**5th grade math**

mule has 7 and donkey has 5

*December 11, 2008*

**math**

You have to measure the lengths of the golden rectangle and then you can solve for the golden ratio. ChaCha!

*December 9, 2008*

**Accounting final**

I have to decide whether these payments go under the land account or building account? I have a feeling neither of them go under the accounts, but just want to make sure. Fire insurance premium payment Asset write-up to proper value Thanks!

*December 8, 2008*

**11th grade:AP Biology**

This is concerning Ecology. Question: You turn on a light and observe cockroaches scurrying to dark hiding places. What have you observed? A. taxis B. learned behavior C. migration D. visual communication E. operant conditioning I have already crossed out migration; however, I...

*December 3, 2008*

**calculus**

I think its 2-x^1, but I can't be sure as I learned it in precalculus.

*December 2, 2008*

**History**

The Battle of Trenton shows the Contintal troops demonstrating trustworthiness. what did the do?

*November 30, 2008*

**calculus**

Suppose the following about a certain object: I. The object's altitude is a function of time, represented by the function A(x) where here x is time. II. The temperature of the object is a function of its velocity, represented by the function T(x), where here x is the ...

*November 26, 2008*

**unscramble words**

can you help unscramble these; DAUATSLFRI DDCNEEODVNIROFA KEAILBTSD they have a thanksgiving theme

*November 18, 2008*

**Chemistry**

is Lead II Dichromate soluable?

*November 12, 2008*

**math**

who do I work this question. The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial A(x) that represents the area. Find A(5).

*November 12, 2008*

**social studies**

why would a girl want to work at the lowell mills

*November 11, 2008*

**college**

why would a woman want to work in the lowell mills

*November 11, 2008*

**chemistry**

Calculate the heat of formation of SiO4(s), given that the heats of formation of SiO2(s), -910.90 KJ/mol; H2O(l), -285.8 KJ/mol; HF (g), -271.1 KJ/mol. I know the heat of formation is products minus reactants but how do i do this when no reaction is given please help

*November 8, 2008*

**chemistry**

Calculate the heat of formation of SiO4(s), given that the heats of formation of SiO2(s), -910.90 KJ/mol; H2O(l), -285.8 KJ/mol; HF (g), -271.1 KJ/mol.

*November 7, 2008*

**chemistry**

What is the theoretical yield in grams of the precipitate starting with 1.250 moles of iron ions (charge is +3) and 60.00 grams of hydroxide ions?

*November 7, 2008*

**algerba**

can 2 pairs of numbers have the same greatest common demonitator and least common demonitator?

*October 25, 2008*

**physics**

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing suddenly drops away! ...

*October 23, 2008*

**chemistry**

Bleh, I meant Krypton, not Radon.

*October 16, 2008*

**chemistry**

149 Ne/73 unknown = sqrt(MM unknown/20.183) Square root the denominator 2.0411 = sqrt(MM unknown)/ 4.4925 multiply the denominator to isolate the unknown 2.0411 x 4.4925 = sqrt(MM unknown) 9.16972 = sqrt(MM) Square both sides, 84.083 = unknown molar mass, closest element is ...

*October 16, 2008*

**History**

Is sectionalism a social issue or a political issue?

*October 11, 2008*

**english**

premodern style was dramatic where modern sticks more to facts, and morals presented itself more in premodern reporting where in modern the more serious side came out.

*October 7, 2008*

**english**

What are the differences between premodern and modern reporting styles. A headline and the first two or three sentences of the news article that would carry the story of that event in premodern style A headline and the first two or three sentences of the news article that ...

*October 7, 2008*

**college Math Word Problem**

The mass of Uranus is about 8.7x10^22 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of Uranus is the mass of the sun? Give your answer in scientific notation.

*October 5, 2008*

**Poetry**

I need to write a one page response to the following poem, answering "How persuasive is this poem? How powerful is its argument? Account for its effect." I don't know where to begin because I don't understand the question. Any suggestions? Promises Like Pie-...

*October 4, 2008*

**science**

what effect could receding have on sea level?

*September 30, 2008*

**Statistics**

Using the standard normal distribution tables, the area under the standard normal curve corresponding to Z > –2.62 is a. 0.0044. b. 0.0047. c. 0.9953. d. 0.9956. The answer is D How do i find the answer on the Table C or just in general?

*September 23, 2008*

**Math**

Betsy, a recent retiree, requires $6000 per year in extra income. She has $47,000 to invest and can invest in B-rated bonds paying 15% per year or in a Certificate of Deposit (CD) paying 6% per year. How much money should be invested in each to realize exactly $6000 in ...

*September 10, 2008*

**History**

What was Massachusetts Bay Colony's economic policy? Like what did they do to make money.

*September 10, 2008*

**riddle**

what can open doors without force even the strongest man can not do it only i

*September 10, 2008*

**Algebra**

Write an equation for the line through (-3,2) and (6,1) y(x)=

*September 7, 2008*

**Algebra**

Write an equation for the line through (-3,2) and (6,1) y(x)=

*September 7, 2008*

**college math**

thanks any way

*September 7, 2008*

**college math**

never mind

*September 7, 2008*

**college math**

Find the slope of the line through the points (6,9) and ( 6+n , 9+2n) slope=

*September 7, 2008*

**Language**

What's the difference between a subject and a subject phrase? Can you give us an example.

*August 28, 2008*

**American History**

He founded the NAACP

*August 15, 2008*

**American History**

What was the significance of WEB Dubois?

*August 15, 2008*

**Ged Test Results**

need my test results from May 06. where to look?

*July 29, 2008*

**physics**

What constant net force is required to bring a 1500 kg car to rest from a speed of 100 km/h within a distance of 55 m?

*July 22, 2008*

**Math**

Well, assuming there is no bottom to the box (taken from where the instructions say you only cut 4 pieces of paper), the largest length possible that can be cut along the 8.5 in side is 4.25 inches. So, assuming the constraints from the instructions the way I interpreted, that...

*July 21, 2008*

**maths**

there are 100 boys, 80 girls, and 20 teachers. In how many ways can a group of 5 (2 girls, 2 boys and a teacher) be selected?

*July 15, 2008*

**health-care**

Thank you, you're a life saver!!

*July 14, 2008*

**health-care**

From the perspective of a caregiver, would you prefer traditional insurance or one of the managed care options (HMO,PPO) and why? I need direct answers please, I'm not a health-care professional or caregiver, so I don't know which to choose.

*July 14, 2008*

**Math/Physics**

For a velocity-time graph, what does the "tangent line of the curve" represent?

*July 13, 2008*

**Variables**

Thanks a million

*July 1, 2008*

**Variables**

In the following statements what are the dependent and independent variables? a. Increased education results in decreased racial/ethnic prejudice. b. The greatest indicator of college attendance is family income, not intelligence. c. Because of hasty and stupid presidents, ...

*July 1, 2008*

**health**

what role do health-care workers play in determining quality care?

*June 20, 2008*

**operations management**

Here are some questions I'm stuck with. If anyone has answers, that would be helpful to review them before my final Wednesday. It has to do with the CROCS company. Thanks... CROCS FINAL EXAM CASE STUDY QUESTIONS This case is about a company that became very successful ...

*June 16, 2008*

**health**

What I'm not sure of are responsibilities that are out of scope of practice. I've googled it but can't find any info on that.what responsibilities do nurses have that may be out of their traditional scope of practice? Pls help.

*June 14, 2008*

**health**

what responsibilities do nurses have that may be out of their traditional scope of practice?

*June 14, 2008*

**Sociology Multiple choice**

Which of the following is(are) true of culture a. culture would be significant whether people held it in common or not b. despite the cultural diversity that exists in American society, there are symbols, language patterns, belief systems, and ways of thinking that are ...

*June 12, 2008*

**Sociology Multiple choice**

Which of the following is(are) true of culture? a. culture would be significant whether people held it in common or not b. despite the cultural diversity that exists in American society, there are symbols, language patterns, belief systems, and ways of thinking that are ...

*June 12, 2008*

**Sociology Multiple choice**

Well its an error conclusion so its false that mean its spurious.. Thanks

*June 12, 2008*

**Sociology Multiple choice**

No its not opposite its true so it should be positive then

*June 12, 2008*

**Sociology Multiple choice**

is it C

*June 12, 2008*

**Sociology Multiple choice**

I am sorry a. Positive b. negative c. Inverse. d. spurious

*June 12, 2008*

**Sociology Multiple choice**

Can anyone help me with these questions as I am stuck in these 1. The finding that the number of women reporting physical assaults by their husbands goes up on Super Bowl Sunday may lead to the erroneous conclusion that watching the Super Bowl causes husbands to be violent. ...

*June 12, 2008*

**Math**

(a^2b^2)^1/5 I'm not understanding can someone help.

*June 9, 2008*

**Chem**

Order the elements S, Cl, and F in terms of increasing atomic radii. I thought the answer was F, S, Cl, but the answer key said it was S, F, CL Why? AR decreases from left to right. Sulfur has one more energy level, so shouldn't its atomic radii be greater than fluorine?

*June 6, 2008*

**Sociology**

Thank you that's really great.

*June 2, 2008*

**Sociology**

Thank you that really helps.

*June 2, 2008*

**Sociology**

Supporters of multiculturalism argue that it helps us come to terms with our diverse present and strengthens the academic achievement of African-American children. Some call for Afrocentrism, the dominance of African cultural patterns in people’s lives. Opponents of ...

*June 2, 2008*