Sunday

May 29, 2016
Total # Posts: 644

**Physics**

y = .5gt^2 160 = .5gt^2 = 5.71s
*September 21, 2010*

**physics**

160 = .5gt^2 = 5.7s
*September 21, 2010*

**physics**

125 = .5gt^2 = 5.1s
*September 21, 2010*

**Algebra**

Determine if the following two planes 2x+3y-z=4 and 3x-4y-6z=1 are parallel, orthogonal or coincidental
*September 21, 2010*

**Science**

What is it called when scientists do their experiments more than once to reduce chance errors?
*September 13, 2010*

**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
*September 9, 2010*

**Calculus**

Use cylindrical shells to find the volume V of a right circular cone with height 7h and base radius 4r.
*September 9, 2010*

**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?
*September 8, 2010*

**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.
*September 8, 2010*

**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.
*September 8, 2010*

**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?
*August 31, 2010*

**social studies**

what are types of land and waterways also known as? Physical features or landforms?
*August 24, 2010*

**English**

Help with fragment, The panther lay motionless behind the rock. Waiting silently for its prey.
*July 12, 2010*

**math**

suppose 1 milliliter of ink can print 30 pages of text. How many pages of text could you print with 2 quarts pf ink?
*July 12, 2010*

**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?' ...
*June 12, 2010*

**grammar verb adverb**

What is the verb and adverb in the sentence The unpredictable volcanic activity discourages people from living there.
*June 9, 2010*

**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.
*May 25, 2010*

**geometry**

Classify the triangle as right, acute, or obtuse if the measures of its sides are 28, 46, and 53.
*May 2, 2010*

**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
*April 30, 2010*

**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!
*April 25, 2010*

**ap calculus ab**

what is the derivative of y=arccos(4x)/3x
*April 19, 2010*

**ap calculus ab**

what is the derivative of y=arccos(4x)/3x
*April 19, 2010*

**science**

an unknown metal has a volume of 20cm^3 and a mass of 54g. Identify the metal
*April 11, 2010*

**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.
*April 4, 2010*

**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.
*March 22, 2010*

**trig**

How do I solve for theta in tan theta = -1?
*March 12, 2010*

**math**

I wrote my question wrong. It should be write 25000000 in expanded notation using the power of 10
*March 7, 2010*

**math**

write 25000000 to the power of 10
*March 7, 2010*

**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 ...
*March 3, 2010*

**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 ...
*March 2, 2010*

**Physics/ Adamson University**

Q=0 delta U= -W delta U= 410j but since it is compression delta U= -410j Temp should rise since the pressure of the system increased
*February 25, 2010*

**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?
*February 24, 2010*

**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.
*February 22, 2010*

**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 ...
*February 15, 2010*

**AP Chemistry**

i still keep messing up, can someone give me a specific answer i can use as a base?
*February 15, 2010*

**Math**

Thank you
*February 3, 2010*

**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.
*February 3, 2010*

**SOCIAL STUDIES**

THIS IS ABOUT EXPLORERS. WHAT IS A JOURNEY MADE FOR A SPECIAL REASON?
*January 28, 2010*

**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?
*January 23, 2010*

**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...
*January 22, 2010*

**Language Arts**

Is the following a correct sentence: Martha and him ate the sandwich.
*January 14, 2010*

**math**

what is 6 3/4 - 7 2/8
*January 13, 2010*

**social studies**

compare trading in China, America, Egypt and Greek then and now.
*December 10, 2009*

**social studies**

what is the history of trading then and now
*December 10, 2009*

**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
*November 17, 2009*

**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...
*November 5, 2009*

**4 grade**

do you have a anwser to this question ,68, ,94, ,120 and the rule
*October 22, 2009*

**Physics**

I think the 2a is meant to be 2 * a
*October 18, 2009*

**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 ...
*October 18, 2009*

**4th Grade Math**

Do you have any answers for this question ,68, ,94, ,120, and the rule
*October 12, 2009*

**Social Studies**

What idea did the United States Constitution borrow from the Iroquois League?
*October 12, 2009*

**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.
*October 8, 2009*

**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 ...
*October 8, 2009*

**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
*October 7, 2009*

**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 ...
*October 7, 2009*

**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.
*October 7, 2009*

**Physics**

\ 130o / \ / \ / \ / \O/ /|\ C mg C 1 2 C= contact force #1 and #2. Does this fit your logic?
*October 7, 2009*

**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 ...
*October 7, 2009*

**history**

What is socialism?
*October 3, 2009*

**Bio**

Flowering is not a category in which land plants are classified.
*September 22, 2009*

**mathematic**

if f(x)=cos(5x) find f(pie/4)
*July 19, 2009*

**math**

if f(x)=cos(5x) find f(ð/4)
*July 18, 2009*

**math**

thank you soo much for all ur help
*July 18, 2009*

**math**

thank you very much for all ur help
*July 18, 2009*

**math**

if f(x)=3tan(x)+2 and, find f(ð/3)
*July 18, 2009*

**mathematics**

sinÈ= 1/4 and ð/4<È<ð, find the value of cosÈ
*July 18, 2009*

**mathematics**

for all values of X for which of the following is defined, find th value of cot^2(X)- csc^2(X)
*July 18, 2009*

**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
*June 20, 2009*

**math**

how do u factor 7x^3+28x^2-35x ? thanx.
*June 6, 2009*

**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?
*May 14, 2009*

**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 ...
*May 7, 2009*

**English**

It still needs some tweaking. I feel that it's too specific. What do you think?
*May 6, 2009*

**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 ...
*May 6, 2009*

**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.
*May 6, 2009*

**6th Grade Math**

28%
*March 30, 2009*

**5th grade**

what is m+4=1
*March 24, 2009*

**chemistry**

In order from highest to lowest. heptane, 2,2-dimethylpentane, hexane, and butane .
*January 24, 2009*

**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???
*January 24, 2009*

**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,...
*January 21, 2009*

**college**

I need help with drug treatments for the respiratory system
*January 13, 2009*

**Geography**

what is the biggest holiday for followers of Shinto?
*January 8, 2009*

**Math**

Can someone help me solve this please A*.3=B A-B=150,000
*December 17, 2008*

**science**

Folic acid, iron and calcium
*December 17, 2008*

**project management**

for example increase profits or increase employee moral.. these are just examples.
*November 24, 2008*

**project management**

Using the MBO approach (management by objectives)come up with a strategy.(make it up) Break them into the 4 levels level 1 top level 2 division level 3 department level 3 employ
*November 24, 2008*

**project management**

You find a problem in a project. The project has a defined baseline and task progress has been entered for all tasks for the first report period. The ACWP field show the right cost for the work reported, but the BCWP and BCWS fields are zero. what could be the problem?
*November 16, 2008*

**Communications**

thank you for the articles. I'm focusing on external communications in north america. Does the txt messaging article also refer to North america?
*November 9, 2008*

**Communications**

Hi there, I am doing a project on Cadbury Chocolate and how to uses (external communication) could you give me ideas of what i should talk about? Or any useful websites or videos? Thanks.
*November 9, 2008*

**Algebra**

On a bull.
*November 9, 2008*

**Math check**

To complete the square, you divide the number before the x by 2, square it, and add it to the end. The answer is d.
*November 9, 2008*

**Math help**

Yes.
*November 9, 2008*

**pre-algebra**

-8a+6(a+7)=1 -8a+6a+42=1 -2a=-41 a=20.5
*November 9, 2008*

**algebra2**

-3x+y=-2 -2=7x-y
*October 26, 2008*

**mth**

34%
*October 20, 2008*

**Math**

Mike took a 2"x4" picture to the photo store. He had it made into a 4"x8" print. Which geometric concept best describes the relationship between the two prints? Similarity, Linear, Symmetry or Congruency?
*October 20, 2008*

**math-3rd grade**

Explain your thinking. Use the digits 1, 3, 4, 5, 7, and 9 to write two money amounts that you can subtract by trading 1 dollar for 10 dimes. Then solve.
*October 15, 2008*

**science**

what are the physcial changes of ethylene glycol at 197 degrees
*October 6, 2008*

**math**

[-50/2+3] (20-9)
*October 6, 2008*

**Chemistry**

Greetings: I was wondering how to calculate the weight/volume % of vinegar using the formula ---------------w/v Per Cent = g/100 mL or grams per deciliter: WHAT WEIGHT DO I USE NaOH, Acetic ACID? the data include: volume of NaOH needed to neutralize Vingegar : 14.24 mL Volume ...
*October 1, 2008*

**Math**

how can i help my son matthew about division and subtract borrow . thanks
*September 9, 2008*