Monday

April 21, 2014

April 21, 2014

Total # Posts: 563

**physics**

200 = .5gt^2 = 6.39s

**science**

is there a formula i can use to determine the diameter of the ball or the percentage of size reduction? The ball has a diameter of 8.5 inches and is inflated to 7 lbs. at 0 depth

**science**

what happens to a soccer ball underwater at a depth of 50 feet?

**Physics**

A baseball catcher puts on an exhibition by catching a 0.15-kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catcher's glove 1.0 m above the ground? (g = 9.8 m/s2 and ignore air resistance)

**social studies**

Hi I am in grade 9 social studies, and I dont understand the part of this assignment it is a ch.2 english cival war and democracy. I do want full marks on this assignment okay, or else I will get a c or an f minus.

**social studies**

Hi I am in grade 9 social studies, and I dont understand the part of this assignment it is a ch.2 english cival war and democracy. I do want full marks on this assignment okay, or else I will get a c or an f minus.

**Math**

2nd grade math question. Kara's shirt has 3 more tens than ones. The value of the ones is greater than 4 and less than 6. What is the number?

**Statistics**

How do you construct a frequency distribution table for the indicated data set? Month Precipiation (inches) January 2.01 February 2.08 March 2.39 April 2.85 May 6.21 June 9.33 July 5.70 August 7.58 September 7.63 October 5.64 November 2.66 December 1.83

**Algebra-Reiny please check**

How can the LCD be 4x^2 when you have two (2x^2) as two of the denominators?

**Algebra-Please help me**

Could you please show me how to solvethis: x+6/4x^2 + 3/2x^2 = x + 4/2x^2 Please show me the steps-I don't even know where to start and I have 30 of these for homework Thank you

**Statistics**

a)One game in a state lottery requires you to pick 1 heart, 1 club, 1 diamond, and 1 spade, in that order, from the 13 cards in each suit. What is the probability of getting all four picks correct and winning $5000 b)If three of the four selections in part (a) are correct, the...

**drawing**

a)One game in a state lottery requires you to pick 1 heart, 1 club, 1 diamond, and 1 spade, in that order, from the 13 cards in each suit. What is the probability of getting all four picks correct and winning $5000 b)If three of the four selections in part (a) are correct, the...

**English**

I'm writing an essay on the short story, The Bouquet. It's a essay on the character of Mary Myrover. Tell me what you think... =D Mary Myrover is Charles W. Chesnutt's major character in the short story, "The Bouquet". She is a prideful, southern white la...

**geometry**

Find the value of x Show work 3x _ = x+15 2

**English**

Hmmm. Still cant can't think of anything. Please help ASAP. :)

**English**

I'm writing an essay on the short story, The Bouquet. It's a essay on the character of Mary Myrover. Tell me what you think... =D Mary Myrover is Charles W. Chesnutt's major character in the short story, "The Bouquet". She is a prideful, southern white la...

**College Physics**

its maximum displacement is also its Amplitude. When an object is in SHM and reaches its A, its velocity is zero.

**6th grade**

What are the d themes of geography ,

**art**

draw picture

**English**

What concerns does Omi and Winant’s theory of “racial formation” share with Bell Hooks’ critique of postmodernism? How might Omi and Winant’s concept address hooks’ concerns about what is lost when we reject essential identity?

**algebra honors**

determine whether each set of ordered pairs is a function {)(0,1),(1,-1),(5,-1),(-1,)}

**Math**

The graph of any quadratic function can be drawn from the vertex form of the equation, by performing 1,2,3,or 4 transformations on the graph of f(x) = x sqaured

**science**

what is ecrfenine unscrambled

**Physics**

y = .5gt^2 160 = .5gt^2 = 5.71s

**physics**

160 = .5gt^2 = 5.7s

**physics**

125 = .5gt^2 = 5.1s

**Algebra**

Determine if the following two planes 2x+3y-z=4 and 3x-4y-6z=1 are parallel, orthogonal or coincidental

**Science**

What is it called when scientists do their experiments more than once to reduce chance errors?

**calculus**

Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the y-axis. y=4/x, y=0, x=2, x=3 I know you have to integrate from 2 to 3 but im not sure what the integral should be

**Calculus**

Use cylindrical shells to find the volume V of a right circular cone with height 7h and base radius 4r.

**Math**

How is the number of zeros in the quotient in 180 divided by 8 equals 20 related to the bumber zeros in the dividen?

**Math**

The Energy formula is (f(t))^2 dt over the integral from t2 to t1. However, I don't know how to utilize it in this case.

**Math**

f(t)=A[u(t)-u(t-10)], where u(t) is the unit step function. Is the energy of this signal finite? Why or why not? If it exists, find the energy of this signal.

**Science**

A pallet of boxes weighing 10 tons is dropped from a lift truck from a height of 10 feet. The maximum velocity the pallet attains before hitting the ground is 6 ft/s. How much kinetic energy does the pallet have in (ft)(lbf) at this velocity?

**social studies**

what are types of land and waterways also known as? Physical features or landforms?

**English**

Help with fragment, The panther lay motionless behind the rock. Waiting silently for its prey.

**French**

I'm in grade 9, and my oral exam is coming up on monday. One of the possible questions involves knowing the plot of the textbook 'Sans frontieres 9e' that I had to return already. Specifically 'Selon toi, qui a commis le crime a\Logi-clique? Pourquoi?' Tran...

**grammar verb adverb**

What is the verb and adverb in the sentence The unpredictable volcanic activity discourages people from living there.

**8th grade Composition**

Identify parts of Speech for sentence below, on numbered word: 1 2 3 Before the eruption, Mount St.Helena was 4 like a giant pressure cooker.

**geometry**

Classify the triangle as right, acute, or obtuse if the measures of its sides are 28, 46, and 53.

**English**

Are there any deeper ideas in Journey to the Center of the Earth by Jules Verne? i.e. irony, symbolism, or anything like that

**Waves**

Hey just finished this question on mastering physics. The velocity of a wave is defined as wavelength*frequency. it is also defined as sqrt(Tension/(mass/rope length)). Set the two definitions equal to each other and solve for the Tension and you should have your answer!

**ap calculus ab**

what is the derivative of y=arccos(4x)/3x

**ap calculus ab**

what is the derivative of y=arccos(4x)/3x

**science**

an unknown metal has a volume of 20cm^3 and a mass of 54g. Identify the metal

**Language Arts 7th Grade**

i am doing a speech about the kx65 and i am having trouble with the introduction (the kx65 is a dirt bike by the way.

**5th grade MATH!!!!!**

No, it can only have one midpoint, because if it had two midpoints, then there would be two line segments! Also, if you add two midpoints, then thus creating another segment.

**trig**

How do I solve for theta in tan theta = -1?

**math**

I wrote my question wrong. It should be write 25000000 in expanded notation using the power of 10

**math**

write 25000000 to the power of 10

**Social Studies **

World War I 1. The alliance system was supposed to prevent war, but it turned a local conflict into a general European war. Why did it fail so badly? 2. World War I cost Germany and other European countries on an economic and a social level. How were people's everyday live...

**Chemistry**

Write an equation for the reaction between the Bronsted-Lowry acid HOCl(aq) reacting with base CO32-(aq) I am having difficulty with this question. Here is what i have so far but I know i went wrong somewhere. HOCl (aq) + CO32-(aq) --> HCO3-(aq) + OCl(aq) Any help would be ...

**Mathematics**

A solution is mixed with a 12% acid solution to form a 16% acid solution. How many liters of the 20% acid solution are used to make 10 liters of the 16% acid solution?

**physics**

The current of a river is 1.9 m/s. A person can swim 0.7 m/s. What is the best angle for the swimmer so that it is swept downstream the shortest distance possible? Distance of river is 120 m.

**AP Chemistry**

A 500 g piece of metal at 60 degrees celsius is placed in 200g of water at 22 degrees celsius contained in a coffee cup calorimeter. The metal and water come to the same temperature at 32.5 degrees cesius. The specific heat of the water is 4.184 j/g(degrees celsius) a) how muc...

**AP Chemistry**

i still keep messing up, can someone give me a specific answer i can use as a base?

**Math**

Thank you

**Math**

Two small planes start from the same point and fly in the opposite directions. The first plane is flying 35 mph slower than the second plane. In 2 hrs, the planes are 530 mi apart. Find the rate of the slow plane.

**SOCIAL STUDIES**

THIS IS ABOUT EXPLORERS. WHAT IS A JOURNEY MADE FOR A SPECIAL REASON?

**Math**

The price of an international call from Detroit to Paris, France, using a particular phone company is 75 cents for the first 5 minutes and 10 cents for each additional minute or fraction thereof. What is the cost (in dollars) of a 25 minute call from Detroit to Paris?

**physics**

Jennifer (mass 58.0 kg) is standing at the left end of a 13.0 m long 594.0 kg cart that has frictionless wheels and rolls on a frictionless track. Initially both Jennifer and the cart are at rest. Suddenly, Jennifer starts running along the cart at a speed of 5.70 m/s relative...

**Language Arts**

Is the following a correct sentence: Martha and him ate the sandwich.

**math**

what is 6 3/4 - 7 2/8

**social studies**

compare trading in China, America, Egypt and Greek then and now.

**social studies**

what is the history of trading then and now

**Physics**

A spring has a spring constant of 259N/m. Find the magnitude of the force needed (a) to stretch the spring by 3.54 10-2m from its unstrained length and N (b) to compress the spring by the same amount. N

**5th grade Language**

Read the poem and answer the question 1. There once was a owboy named Ray 2 who never had that much to say 3 except or the times 4. Stampedes topped on a dime 5 when that cowboy named Ray hollered "hey" 1 in which lines do you see repetition? 2 what is the example of...

**4 grade**

do you have a anwser to this question ,68, ,94, ,120 and the rule

**Physics**

I think the 2a is meant to be 2 * a

**Physics**

When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2a. Find the weight of the ball, and the acceleration a. I tried solving this via substitution algebra, but the answer st...

**4th Grade Math**

Do you have any answers for this question ,68, ,94, ,120, and the rule

**Social Studies**

What idea did the United States Constitution borrow from the Iroquois League?

**Physics**

My thoughts were that tension must be halved in one sense or another, but I cant seem to get the math to work out involved, perhaps Im missing the equations entirely.

**Physics**

This is another problem that I need clarification on since no one seems to be of any help at my school, A pulley system is used to lift a 52- crate.Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume t...

**Physics**

C ( ) | O | | | | | | | | | | O ) (Force via hand) | [52kg] Sorry for such a crude drawing but if you imagine the lines as the rope, the parentheses as curves in the line, and O's as the pulleys. C = Cieling

**Physics**

This is another problem that I need clarification on since no one seems to be of any help at my school, A pulley system is used to lift a 52- crate.Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume th...

**math**

The solution seems to follow this pattern. 2 x 5 = 10 10 -5 = 5 5 x 5 = 25 25- 5 = 20 20 x 5= 100 Basically first number times 5, next minus 5, the next again times 5, the one after minus 5 Etc.

**Physics**

\ 130o / \ / \ / \ / \O/ /|\ C mg C 1 2 C= contact force #1 and #2. Does this fit your logic?

**Physics**

Please help me out, I can't figure out the process for answering this question and my TA is of no help, A 0.11- ball is placed in a shallow wedge with an opening angle of 130 degrees,for each contact point between the wedge and the ball, determine the force exerted on the ...

**history**

What is socialism?

**Bio**

Flowering is not a category in which land plants are classified.

**mathematic**

if f(x)=cos(5x) find f(pie/4)

**math**

if f(x)=cos(5x) find f(ð/4)

**math**

thank you soo much for all ur help

**math**

thank you very much for all ur help

**math**

if f(x)=3tan(x)+2 and, find f(ð/3)

**mathematics**

sinÈ= 1/4 and ð/4<È<ð, find the value of cosÈ

**mathematics**

for all values of X for which of the following is defined, find th value of cot^2(X)- csc^2(X)

**Physics**

wwhat is the kinetic energy of a 1500kg car with a velocity of 72km/r B.... how much work must be done on ths car to bring it to a complete stop

**math**

how do u factor 7x^3+28x^2-35x ? thanx.

**5th grade math**

Round 427,685 to the nearest thousand. A. 400,000 C. 428,000 B. 427,000 D. 430,000 the answer is C Round 0.8394263 to the nearest hundred-thousandth. A. 0.840 C. 0.83942 B. 0.83943 D. 0.839 would the answer be B?

**English**

Could someone help me write a thesis statement for the following topic: "Our school should be free of all weapons including the guns carried by a police officer." So far this is what i have for a thesis statment. "Although having police officers in our schools h...

**English**

It still needs some tweaking. I feel that it's too specific. What do you think?

**English**

Hi, thanks your website was helpful. I don't think armed police officers should be in our schools. This is what i have so far: "Although having police officers in our schools has proven a success rate in the decrease of violence and bullying, armed police is not a sol...

**English**

Hi, I am doing an essay on the topic "Our school should be free of all weapons - including the guns carried by a police officer.I am having difficulty coming up with a thesis statement, could you help me. Thanks.

**5th grade**

what is m+4=1

**chemistry**

In order from highest to lowest. heptane, 2,2-dimethylpentane, hexane, and butane .

**Chemistry**

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???

**Economics**

Hi there, I am having trouble with this problem.Can you give me some guidance. In planning the publication of a new engineering economics textbook, the publisher has identified the following fixed and variable costs. Fixed Costs Overhead- $10,000 Editing and Typesetting- $100,...

**college**

I need help with drug treatments for the respiratory system

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