Friday

July 3, 2015

July 3, 2015

Total # Posts: 600

**Physics**

A 1000 kg car rolling on a horizontal surface has speed v = 55 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?
*October 24, 2011*

**Physics**

Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?
*October 24, 2011*

**Physical Science**

Under what circumstances would you expect the shared electron pair to be equal distances on the average from each of the atoms participating in a covalent bond?
*October 18, 2011*

**Physical Science**

What kind(s) of particles make up (a) gaseous compound (b) liquid compound (c) solid compound?
*October 17, 2011*

**Physical Science**

What is an example of radioactive decay?
*October 13, 2011*

**American Gov**

The most important source of political values in the United States is probably what? Mass Media Family Religion School Local Newspaper
*October 11, 2011*

**algebra**

use this inequality -4t - 8 less than or equal to 12 to fill in the missing number, t+4 greater than or equal to ___?
*October 6, 2011*

**US Gov**

I think it is B but I am not sure!
*October 5, 2011*

**US Gov**

The reason a statement specific to state powers was not part of the original U.S. Constitution was that: a. New York delegates refused to allow discussion on the matter. b. it was assumed to be obvious. c. it was deleted under the Virginia Plan. d. no such consensus existed at...
*October 5, 2011*

**MATH QUIZ**

Round each number to the underlined place value. 1.) 15.6571 -->5 is underlined 2.) 0.8914 -->1 is underlined 3.) 7,022.56 -->3 is underlined 4.) 345.678 -->6 is underlined Estimate. 5.) 3.7 · 8.06 about 32 about 27 about 12 about 24 6.) 17.25 + 6.66 about 9...
*October 5, 2011*

**MATH QUIZ**

Round each number to the underlined place value. 1. 15.6571 --> the underlined word is 5 2.
*October 5, 2011*

**Physical Science**

Alpha particle tracks through gases and thin metal foils show few deflections. What does this tell us about the atom??
*September 29, 2011*

**math**

Make a tally chart for the number of students in the third-fourth-and fifth grade classes: 26,25,27,27,26,28,27 I don't understand how to find the answer.
*September 22, 2011*

**physics**

A plane is traveling at 300 m/s drops a bomb which hits it target 10 sec later. How high was the plane flying?
*September 21, 2011*

**math**

Assume that both Jane and Kathy start with 0 marbles. If Jane wins the first 15 games in a row, she will now have 15 marbles, and Kathy will have -15 marbles. This is because for ever game Jane wins, Kathy needs to hand over a marble. Jane cannot win anymore games. The goal ...
*September 19, 2011*

**pe**

what are the six common managerial functions that should be performed by a sports manager
*September 8, 2011*

**Math**

“How much does one cost?” asked the man.“50 cents” replied the hardware clerk“and how much does 18 cost?” the customer asked.“One dollar” said the clerk “Ok I’ll take seven hundred six” the man said “That will be $1....
*September 7, 2011*

**physics**

I place a single negative charge in a region where there is a constant electric field pointed toward the floor. The charge feels a force where?
*August 22, 2011*

**How to Start your own day care facility**

THe first step to planning a child care center is to what?
*August 16, 2011*

**Chemistry**

If it were determined that there were 6.391 x 10^22 atoms of H in an unknown sample of C2H4Cl2, how many milligrams would the unknown sample weigh? Sorry for all the questions Dr. Bob.
*July 29, 2011*

**Chemistry**

Consider the reaction below : P4(s) + 5O2(g) ---> P4O10(s) How many grams of phosphorus react with 4.745 x 10^1 L of oxygen at STP to form tetraphosphorus decaoxide?
*July 29, 2011*

**Chemistry**

Thank you Dr. Bob.
*July 29, 2011*

**Chemistry**

How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?
*July 29, 2011*

**Chemistry**

thank you :)
*July 29, 2011*

**Chemistry**

A sample of 0.30 moles of a metal M reacts completely with excess fluorine to form 18.69 grams of MF2. How many moles of F are in the sample of MF2 that forms? M + F2 ---> MF2 How many grams of M are in this sample of MF2 ?
*July 29, 2011*

**Heat!!! **

Can you please check my answers. My teacher gave me a list of 200 questions to study, but I lost the answer sheet. Can you please help me with these 23 Thanks 1. A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What will be the ...
*July 5, 2011*

**Chemistry**

Thank you
*June 30, 2011*

**Chemistry**

When 320.62 grams of Bi2O3 react with excess of C, how many moles of Bi form? I know I need to use stoichiometry, but I can't quite seem to get the correct balanced equation.
*June 30, 2011*

**Chemistry**

How many grams of C are required to make 431.47 grams of C3H8?
*June 29, 2011*

**Chemistry**

When 320.62 grams of Bi2O3 react with excess of C, how many moles of Bi form?
*June 29, 2011*

**Chemistry**

How many milliliters of 1.237 M HCl are required to react with 27.02 grams of MgCO3 ?
*June 29, 2011*

**history **

What was the significance of Winston Churchhill's Speech in 1946 in Fulton, Missouri? * plz help i have to write 2 paragraphs and cannot find enough info to write that much
*May 24, 2011*

**math**

Assume that both Jane and Kathy start with 0 marbles. If Jane wins the first 15 games in a row, she will now have 15 marbles, and Kathy will have -15 marbles. This is because for ever game Jane wins, Kathy needs to hand over a marble. Jane cannot win anymore games. The goal ...
*May 10, 2011*

**Child Development**

A good technique to prevent children from talking to you while you're observing them is to what? 1. Avoid eye contact 2. Sit far away 3. Stand to one side Which one is correct?? ( i think its one of the first two im not sure)
*April 14, 2011*

**Math**

The answer is 7 12+8+3= 23 so 30-23 is 7 At least this sounds right to me! Hope this works out for you.
*April 14, 2011*

**French**

1. _______ (On sundays), my parents _______(go) musee. 2. _______ (On Fridays) , my mother _______ (Go) Bank Sorry i did spanish at first, but any way this the translation for fre nch!
*April 14, 2011*

**French**

1. _______ (On sundays), month padres _______(aller) musée. 2. _______ (Viernes) , ma mère _______ (aller) Banque
*April 14, 2011*

**Japanese**

When i translated this it looked a lot diffrent then it does now! Sorry!
*April 14, 2011*

**Japanese**

1. ‚h@–Ú‚ðŠo‚Ü‚µ‚Ä‚‚¾‚³‚¢6:00 ‚QD‚h@’©H‚ðH‚×‚Ä‚‚¾‚³‚&...
*April 14, 2011*

**child care**

i just took the test that answer is correct!!
*April 14, 2011*

**grade nine math **

Oh so you are saying that the 35 should be a positive instead of a negative. Is that correct!!So the answer for r is 2. Thanks I think I get it.
*April 12, 2011*

**grade nine math **

is the answer to my equation right? equation: 5(3r-7)+r=3(r-3) 15r-35+r=3r-9 15r+r-3r=-35-9 13r/13 = -44/13
*April 12, 2011*

**grade 9 math**

Does this answer seem correct. 2k+3=4k-5 2k-4k+3-3=-5-3 2k-4k=-5-3 -2k/-2k = -8/2 k=4
*April 12, 2011*

**grade 9 math **

Can someone please help me solve this equation. And please explain how to break this down. 4b-6+b-9= 0
*April 12, 2011*

**Physics**

A car of mass = 1200 traveling at 60.0 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires.What is the radius of the turn if = 20.0 (assuming the car continues in uniform circular motion ...
*April 6, 2011*

**French**

I wrote "Bien que Rousseau etait apparemement..." And my teacher underlined bien que and drew an arrow to etait...what could he be referring to? And I wrote "Mais Rousseau pensait aussi que la nouvelle connaissance parce qu'il permettait..." My teacher ...
*April 5, 2011*

**French**

I am trying to say "When one person has a loss, another could perhaps benefit." This is what I have: Quand une personne a une perte, une autre peut-etre pourrait profiter a la perte. Was I supposed to have used conditional? And do you notice any errors?
*April 5, 2011*

**Chemistry**

Consider the following reaction: H2+I2<->2HI A reaction mixture at equilibrium at 175 K contains P(H2)=0.958 atm, P(I2)=0.877 atm, and P(HI)=0.020 atm. A second reaction mixture, also at 175 K, contains P(H2)=P(I2)=0.616 atm, and P(HI)=0.106 atm. What will the partial ...
*April 4, 2011*

**Stats**

How many different simple random sample of size 8 can be obtained from a population whose size os 42?
*March 28, 2011*

**grade nine polynomials**

(3/4) (1/-2) + (5/6) (-1/3)
*March 27, 2011*

**grade 9 polynomials**

7r +21s - 4r +18s 7r-4r =21s+18s 3r+39 Does this sound correct.
*March 27, 2011*

**grade 9 polynomials**

7 (r+3s) - 2(2r -9s) I am having a hard time solving can anyone please help
*March 27, 2011*

**chemistry**

What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 500 mL of H2O
*March 23, 2011*

**computer science**

Create a method called countZeros, which takes an integer array as an input parameter and returns the number of zero entries in the array
*March 21, 2011*

**How Children learn**

1-20??
*March 11, 2011*

**Teacher Aide**

What are the answers??? And please let me know if you actually passed this exam.
*March 11, 2011*

**Teacher Aide**

Im doing Child devolopment and human behavior... and i want and need help! I have a headache! 1-20
*March 11, 2011*

**Physics 102 (College)**

256
*February 27, 2011*

**Physics 102 (College)**

5
*February 27, 2011*

**math**

somebody help with this question
*February 27, 2011*

**math**

ms.pritchard wrote the following inequality on the board 5.6 with the sign greater on equal to then negative fourteen what should be the solution set for the inequality
*February 27, 2011*

**ap chem**

what is the entire equation because you should be able to set it up as kc=(concentrations of products)/(concentrations of reactants). Also the balanced chemical equation will tell you to what power the concentration is raised to.
*February 13, 2011*

**Physics**

3.84m/s^2
*January 31, 2011*

**English**

Like everyone is saying you have to read the questions and answers carefully and just match these answers closest to your options. and also they are all the same questions except the optional answers were in a different order. And @Daniel is correct , #4 and #7 are wrong and ...
*January 28, 2011*

**algebra**

is it (x - 2x)^2 ?
*January 27, 2011*

**algebra**

decide whether each trinomial is a perfect square. if so, factor it. x^2 - 4x + 4 how do i solve this?? i don't understand the method..
*January 27, 2011*

**algebra**

ok, thank you
*January 27, 2011*

**algebra**

write each square as a trinomial: (-11t^2 - 2)^2 (22t^4 + 44 + 4) <- is this answer correct?
*January 27, 2011*

**Chemistry**

How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point? Given: Density 0.818 g/mL Boiling Point 78.5 C Heat of Vaporization 210 cal/g Any help is appreciated!
*January 19, 2011*

**Chemistry**

what number should be placed in the blank to balance the equation C 3 H 8 + 50 2 --> 3 CO 2 ___ H 2 O I have been working on this Q for four hours and it is driving me CRAZY please HELP i hate chemistry or anything with numbers in it as a matter of fact.
*January 12, 2011*

**language infinitives**

it is used as a noun,an adjective,and also and adverb.
*December 11, 2010*

**Calculus**

assuming that you wish to have $19000 in 7 years and that the account earns 6% compounded continuously. Round your answer to the nearest cent. Answer:
*December 1, 2010*

**Calculus**

Company QRS generated a net profit between 1992 and 1997 at a rate approximated by 20 t + 264.5 million dollars per year, where t is the time in years since 1992. Find the value, in 1992, of QRS's net profit over the 5-year period from 1992 to 1997. Assume that the ...
*December 1, 2010*

**Calculus**

Redo problem 8 in section 6.3 of your textbook (page 288) assuming that the parents need $105000 in 9 years for college expenses, and that the bank account earns 9.25% compounded continuously. Round your answers to the nearest cent. (You may need to compute your answers to 4 ...
*December 1, 2010*

**Algebra: Simple Interest**

(5000 - x).12 + x(.10) = 568 (5000).12 - (x).12 + x(.10) = 568 600 - .12x + .1x = 568 subtract 600 from both sides -.12x + .1x = -32 -.02x = -32 divide both sides by -.02 x = 1600 3400 at 12% and 1600 at 10%
*November 22, 2010*

**Physics**

A 50-kg block is at rest on a 15 degree slope. A force of 250 N is acting on the block up the slope parallel to it. If the block does not slide up the slope, what is the minimum value of the coefficient of static friction between the block and the slope?
*November 22, 2010*

**accounting**

(cost - salvage)/life = annual depreciation (1000 = 50)/5 = 190 Book value - # years depreciated x annual depreciation = book value 1000 - 2(190) = 620
*November 22, 2010*

**Algebra**

Similar are proportional. 12 is to a as 3c is to c cross product 12c = 3ac divide both sides by 3c and a = 4
*November 22, 2010*

**math **

whats 5 to the seventh power and whats 5 to the third power
*November 14, 2010*

**math**

Mrs.rushford began to hike at an elevation of negative 40 feet. her elevation decreased by 90 feet in one hour what was Ms.rushford elevation after 1 hour
*November 14, 2010*

**Chemistry**

DrBob222, why don't you just post the damn answer?
*October 25, 2010*

**Math**

Ferroza can buy a 24 ounce bag of ferret food for 1.19 or she can buy a 36 ounce bag for 2.89. which is the better deal?
*October 19, 2010*

**math**

(3 3/4) + (2 1/4) = 6
*October 19, 2010*

**Math**

How do you find the area of a semicircle
*October 18, 2010*

**math**

a tree casts a 12 f shadow at the same time a 10ft flagpol case a 20ft shadow how tall is the tree
*October 17, 2010*

**Chemistry**

How much hydrogen and oxygen must react to produce 65.00 grams of water? 2H + O2 -> 2H2O
*October 13, 2010*

**math**

what is the relationship between sin of thata and cos of thata at every ten degrees?
*October 4, 2010*

**physics**

A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.
*September 13, 2010*

**social studies**

What is another name for the peninsula nicknamed The Northern Neck?
*September 8, 2010*

**Law and ethics in allied health**

Licensing laws allow states to
*August 28, 2010*

**Geometry**

Which is the hypotenuse-leg theorem? A. If the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse is congruent to the corresponding part of another right triangle, ...
*June 30, 2010*

**9th grade ENG**

in her room at the prow of the house where light breaks and the windows are tossed with linden. my daughter is writing a story i pause in the stairwell , hearing from her shut door a commotion of typewriter- keys like a chain hauled over a gunwale. young as she is, the stuff ...
*June 10, 2010*

**algebra**

is the average of 27 - x, x - 8, and 3x + 11 is y, what is the average of 2y and 2y/3?
*June 7, 2010*

**Science**

I have to compare and contrast the difference between a service current and a wave.
*June 6, 2010*

**5th grade**

I am doing a history project on ancient rome was wondering if anyone knows where I can Ancient Rome natural resouces and how they were used. I don't know if I'm looking it up right all I seem to find is that they planted olives. Thanks
*May 29, 2010*

**statistics**

The question is: A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. there is no mode b. there are two modes c. there are three modes I answered a. there is no mode.
*May 4, 2010*

**statistics**

a data set consists of a set of numerical values. which of the following is correct? a. there is no mode b. there are 2 modes c. there are 3 modes I answered a there is no mode is this correct?
*May 4, 2010*

**statistics**

indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. the 29th percentile is greater than the 30th percentile. b. the median is greater than the quartile c. the third quartile is greater than the first quartile d. ...
*May 4, 2010*

**Chemistry**

What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees Celsius?
*April 30, 2010*

**chemistry**

Why can you smell a cake baking in the kitchen when you are in your bedroom?
*April 28, 2010*