Saturday

April 19, 2014

April 19, 2014

Total # Posts: 722

**Chemistry**

How many air molecules are in a \rm 12.0 \times 12.0 \times 10.0~ft room? Assume atmospheric pressure of 1.00 \rm atm, a room temperature of 20.0 \rm {}^{\circ}C, and ideal behavior. Volume conversion:There are 28.2 liters in one cubic foot

**math**

A full container holds 5/8 of a gallon of liquid. If the container is 4/5 full, how much liquid is in the container? I need answer to problem and how you solved it using words for the explanation.

**algebra**

f-g/1 = g/1 How can I make g the subject?

**maths**

A bond with face value of $500 redeemable at par in 13 years time, is paying interest at j2 = 9.0%. Find the purchase price of the bond to give a yield to maturity of j2 = 8.4%.

**9th grade**

In the odyssey, what is book 16, 17, 21, 22, and 23 about in a short summary? Also explain the conflict. Some Traits of an epic hero also. Please help!!!

**chemistry**

What is the final temperature of a 52 gram glass of water at 2.0 C if it absorbs 3.0 J heat?

**government**

how does the national government's relationship to the states differ from the states' relationship to local government?

**chemistry**

write a balanced chemical equation for the reaction that occurs when aqueous solutions of sodium chloride and sodium iodate are mixed

**geometry**

collinear points gk=45, hl=18, and gh=hi=i. find the length of each segment

**physics**

Sooo... Isaac kicks a soccer ball 11.5 m/s at an angle of 41 degrees above horizontal. What is the velocity of the ball just before striking the ground???

**physics**

The leg and cast in the figure below weigh 260 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 125 N. Determine the weight w2 AND the angle α needed so that no force is exerted on the hip joint by the leg plus cast.

**physics**

The leg and cast in the figure below weigh 260 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 125 N. Determine the weight w2 AND the angle α needed so that no force is exerted on the hip joint by the leg plus cast.

**Physics**

If a soccer ball is kicked at 11.5 m/s at an angle of 41 degrees above horizontal, what is the ball's maximum range?

**science **

what factors affect plant growth, i nkow light, water, and all the stuff but more things please, for my science project!:)

**Math Problems**

Lauren earns $3.75 per hour as an usher. In 5 days her tips were $19.75, $25.30, $18, $21.50, and $18.50. Find Lauren’s average daily tips and use them to predict her earnings for a 37-hour workweek in which she works 4 days. (In other words, how much would she earn for a...

**geometry**

i got it now, thx!

**geometry**

I still dont understand.

**geometry**

point G is the midpoint of EF EG= 4x+12 and EF= 2x+30. How do i find GF?

**Math**

99,88,198,197,?,296,396

**college**

a light bulb manufacture claims that the mean life of a certain type of light bulb is more than 750 hours

**accounting**

It depends on the materials in question.

**childcare**

1. d is not the right answer and iam not too sure about c.

**chemistry**

AgCl is insoluble / dissolves really slowly, but I'm guessing from the question that it means the latter. It should form AgI given enough time.

**physics**

6.4

**social studies**

The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation; > to restore externa...

**statistics**

A sample of 40 observations is selected from one approximately normal population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second source. The sample mean is 99 and the standard deviation is 6. Conduct a hypot...

**chemistry**

15.0 g of Potassium metal is dropped into 50.0 ml of a 1.50 mol/L solution of H2SO4. what is the mass of gas given off during the reaction?

**chemistry**

thanks!

**chemistry**

okay so i got, 0.02375 molAl(OH)3x3molH2SO4/2molAl(OH)3=0.035625molH2SO4 0.035625molH2SO4x98.08g/molH2SO4= 3.4941g H2SO4 Correct? so the 3.4941g would be how much H2SO4 needed to neutralize the spill?

**chemistry**

so moles Al(OH)3 = M x L = 0.500 x 0.0475 = ?? is 0.02375?

**chemistry**

in the lab there is a spill of 47.5mL of .500 mol/L Al(OH)3. How many grams of H2SO4 would be needed to neutralize the spill.

**physics**

Air will break down as a dielectric when subjected to applied fields in excess of 3 * 10^6 N/C. a parallel plate capacitor using air as a dielectric has a capacitance of 1.0nF and a separation b/t plates of 1.0micrometer. how much energy U was stored in this capacitor at the m...

**chemistry**

How can u determine the molar mass of a compound?

**calculus high school**

never mind, the second term is derived using the product rule

**calculus high school**

isn't that the power rule? anyway, ow do you derive teh second term?

**calculus high school**

thanks. you got the answer right. but i don't understand how the chain rule is used iin this problem.

**calculus high school**

7y^4+x^3y+x=4 using implicit differentation, how do i solve this problem. it is a textbook example but the partwhere i "use the chain rule on the first term" doesn't make sense to me because they get d/dx 7y^4+(x^3dy/dx +y d/dx x^3)+d/dx x

**literary**

what is the subordinating conjunction in this sentence..? I mentally outlined my essay while i waited for the bus.

**physics**

A sample of anthracite has a moisture content of 5% when mined and an energy density of 35 kJg-1 when completely dried. Assuming that during combustion, the temperature of the water in the un-dried coal is raised from 20.0oC to 100.oC, and then vaporized at 100.oC, estimate th...

**Business**

The four Ps of a marketing mix are:

**business law**

What do you feel about community corrections? Do you feel a community-based punishment is justifiable in today’s society? Explain why or why not. Provide an example of a community-based punishment. How do community corrections affect American society?

**200**

Most public schools are supported financially by district, state, and federal government agencies. Identify the roles each of these agencies has in your local schools. Which agency do you feel has the most significant influence over policy and curriculum decisions for local sc...

**calc**

Let f(x) = x2 + 3x + 2. Find the equation of the line containing (1, f(1)) and (3, f(3)).

**provine**

How does the tilt of the earth affect climate

**vocabulary**

The mom left the room with a MODICUM of respect after her baby began ____ . a) sleeping b) screaming c) praying d) singing b is that correct

**vocabulary**

scathe: to attack with severe criticis, to harm, injury.

**vocabulary**

After the play _____, several critics made scathing comments about it. a)succeeded b)opened c)closed d)bombed a is that correct

**vocabulary **

The mom left the room with a MODICUM of respect after her baby began ____ . a) sleeping b) screaming c) praying d) singing b is that correct

**algebra**

what did the ape think of the grape's house?

**science**

Post a 200- to 300-word response to the following: In your own words, summarize each of the major theories of biology. • Choose one theory and provide an example of how this theory relates to the news today. • Use at least one outside reference in addition to your te...

**math**

In 1979 women earned .63 to each $ earned by a man. 2003 women earned 80% of what men earned. Since 2003 women lost 0.8% in earnings If the current median income for a man is 40,688 what is the median income for a woman?

**physics**

Two rock climbers, Bill and Karen, use safety ropes of similar length. Karen's rope is more elastic, called a dynamic rope by climbers. Bill has a static rope, not recommended for safety purposes in pro climbing. Karen falls freely about 1.7 m and then the rope stops her o...

**Physics 221**

A constant horizontal force of magnitude 18.0 N pushes a block of mass 2.00 kg along a rough horizontal surface for a distance of 2.00 m. During this operation the speed of the block changed from 4.00 m/s to 6.00 m/s. What work was done on the block by kinetic friction? (a) 32...

**Physics 221**

A 20g particle is moving to the left at 30 m/s. How much net work must be done on the particle to cause it to move to the right at 30 m/s. The answer is 0J of work, and i understand the method of equations, but i dont understand the logic behind it. Thanks for any help.

**algebra**

Hosni gave the following argument that 2(a 1 b) 5 2a 1 2b, for all integers a and b. If the argument is correct, supply the missing reasons. If it is incorrect, explain why not

**AP BIO**

The answer is 3, I know that for sure

**Physic**

I hate this site

**statistics**

a mathematically defined curve that is the comparison distribution used n ANOVA is called the?

**physics**

The 49 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The climber has reduced push to verge of slip. The static coefficients of friction between his shoes and the wall, and between his back and the wall, are 1.2 and 0.8...

**algebra**

spuare root of 24 as radical expression.

**us history**

why is the study of early Americans so difficult?

**physics**

h

**math**

The amount $180.00 is what percent greater than $135.00? A. 35% B. 33.33% C. 75% D. 133.33% it's d right

**math**

sorry i was pressing the wrong key now i got it .thank you

**math**

that was for the first respons i will read ms.sue's now

**math**

it didn't work

**math**

Your employer has 600 business cards printed for you, and you give away 280 of them. To the nearest hundredth, what percent of the cards is left? A. 18.75% B. 21.43% C. 46.67% D. 53.33% i tried this formual but i couldn't do it r= p/b

**math**

The product of 7/16, 4/3 and 1/2 is A. 2 13/48. B. 21/32. C. 7/24. D. 7/12. 7/16*4/3*1/2=28/96 can you explain to me the next step

**math**

i got the answer it's D thanks how did you figure out which operation to use.

**math**

If 28% of a sum is $100.80, what is the sum? A. $129.02 B. $277.78 C. $282.24 D. $360.00 how can i do this

**math**

how did u get the 1.06? 6% i move the % sign moved the decimal 2 place to left 0.06?

**math**

You purchase a shirt for $8.50. There is a 6% sales tax. Your total cost will be A. $8.55 B. $8.98 C. $9.01 D. $13.60 how can i solve this?

**math**

The LCD for the fractions 1/3, 3/4, 5/32, and 8/9 is A. 24. B. 64. C. 288. D. 3072. can u show me how to do this

**Algebra**

Thank you for answering, but I'm so confused. Can someone else help, please?

**Algebra**

I don't understand. If you do it that way, your z-3 doesn't cancel and then i don't know where to go from there.

**Algebra**

Wait, I wrote it wrong. This is the correct way: (9z-42z-72)/(3z^2+28z+32)divided by(z^2-9z+18)/(2z^2+10z-48)

**Algebra**

9z-42z-72/3z^2+28z+32divided by 2z^2+10z-48/z^2-9z+18 Can someone help me? I know they're supposed to be flipped and factored, and I did that, but afterwards I can only get as far as: 9z+12/3z+4*2z-6/z-3

**Criminal Justice**

Can someone help me find the average punishment for forcible rape in the United States? I know most of it is based on a state level, but I'm having a hard time finding any general information. I need to know the current punishment for rape. Please help :)

**Managerial Finance**

In general the larger the portion of the firm's sales that are on credit, what happens

**LOGIC - Strength of enumerative arguments**

#1 Here's my argument: Alice went to Lincoln High and earned a college scholarship. Ben went to Lincoln High and earned a college scholarhip. Carol went to Lincoln High and earned a college scholarship. Dan went to Lincoln High and earned a college scholarship. Ellen goes ...

**LOGIC - Strength of enumerative arguments**

#1 Here's my argument: Alice went to Lincoln High and earned a college scholarship. Ben went to Lincoln High and earned a college scholarhip. Carol went to Lincoln High and earned a college scholarship. Dan went to Lincoln High and earned a college scholarship. Ellen goes...

**Government**

hi

**12th grade**

Map of Wazir Akbar Khan district of Kabul – create a map with three-dimensional aspects that includes (but not limited to) Amir’s home, Ali’s quarters, Ghargha Lake, the cemetery (pomegranate tree), bazaar, Cinema Zainab, Kabul River, bus station, kite maker...

**opinion sociology**

#1. 1 #2. 3 #3. 1 #4. 4 #5. 3

**12th grade**

List 3 problems of Decentralized power that existed under the Articles of Confederation. For each problem, identify one solution that the Constitution provided to address the problem.

**Algebra**

This one too please, 2/5x-1/3x=3

**Algebra**

Help, how do I do these? 1. 8y+4(2+y)=3(y-4)+10y 2. Square root symbol 81 -|-8+17|+3 the sqaure root symbol doesn't hang over the entire equation, just the 81. thanks

**Physics**

to give destructive interference, you must have path difference, x- y = (2n + 1) * lamda/2 where n = (0, 1, 2, ....)

**history**

i have the supreme court..

**history**

Can anyone help me ?? George W. Bush's victory in presidentaial election of 2000 was finally decided by who??

**geometry**

#2 T,U,X,Y

**biology**

question 2 : the elodea gives off oxygen which lets the BTB stay blue

**AP Statistics**

If you know that a randomly chosen person 25 years of age or older is a college graduate, what is the probability that he/she is in the force labor? Show your work. Given for college graduates: total pop = 51,582 in labor force = 40,390 employed = 39, 293 I tried using the Cas...

**AP Stats**

If you know that a randomly chosen person 25 years of age or older is a college graduate, what is the probability that he/she is in the force labor? Show your work. Given for college graduates: total pop = 51,582 in labor force = 40,390 employed = 39, 293 I tried using the Cas...

**8th grade**

what does "new moon" have to do with the book new moon

**english**

Which of the following sentences has a helping verb? A. She had rested on the dock. B. He went home late. C. Her brother paddled the canoe. D. She swam across the lake.

**government**

Whose responsibility is it to determine if governmental acts are constitutional?

**math**

an 8oz cup of water contains 7.5 x 10^24 water molecules. the ocean contains 5.4 x 10^46 water molecules. about how many cups of water are in the ocean.

**physics**

A projectile is launched with a speed of 41 m/s at an angle of 60° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight. m

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