Monday

September 26, 2016
Total # Posts: 1,892

**Science**

Why does tha physicist believe," a measurement without a quoted error is meaningless "? Please help!!

*August 20, 2013*

**Science ,**

can you explain for me ? it is hard to understand.!!

*August 20, 2013*

**Science , **

Do" laws of nature" really exist ?

*August 20, 2013*

**Physic, **

Why does the author believe ," a measurement without a quoted error is meaningless?

*August 20, 2013*

**maths**

Which post Henry?

*August 6, 2013*

**maths**

Find the angle between the line y=2x and the points (-1;7/3 ) and (0;2)

*August 6, 2013*

**analytical chemistry**

How many grams of H3BO3 and mL of NaOH (with concentration 0,1M) should you add, to get a 500mL buffer, with pH 9. pKa=9,236

*July 30, 2013*

**Psychology**

In their book The Bell Curve, Murray and Herrnstein supported their claim of intelligence differences between races and attributable to.

*July 27, 2013*

**Geometry**

G.58

*July 27, 2013*

**poem**

Energy

*July 17, 2013*

**english**

write sentences with nouns:blessing,miracles,mystery,defect sacrifice

*July 15, 2013*

**english**

1-have you ever searched for information on the internet?Describe the process you used. 2-Is information from the internet as good as information from a library?explain>

*July 15, 2013*

**math**

250 meters 1 second

*July 10, 2013*

**english composition**

i am having trouble coming up with a topic. thanks for the link.

*July 6, 2013*

**english composition**

please help me to create division and classification prewriting essay.

*July 6, 2013*

**math**

Factorial notation problem. Please help? Hi, I am stuck on this maths problem. Solve for n: (n+2)!/(n)! =110. I get as far as (n+2)(n+1) = 110. When I multiply it out I get n^2,3n,2 = 110. There is only one example similar to this in my book and it used a quadratic equation to...

*July 3, 2013*

**physics **

a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

*June 21, 2013*

**physics **

a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

*June 21, 2013*

**science (physics)**

a skaterboarder is moving 5.25 m/s when he starts to roll up a frictionless hill. how much higher is he when he comes to a stop? (energy problem)

*June 21, 2013*

**Physics**

A syringe which has an inner diameter of 0.6 mm is attached to a needle which has an inner diameter of 0.25 mm. A nurse uses the syringe to inject fluid into a patient's artery where blood pressure is 140/100. Assume the liquid is an ideal fluid. What is the minimum force ...

*June 16, 2013*

**Biology**

Hi My bio HW is asking what are the symptoms and host response for tuberculosis.... i have the symptoms but I need help with what the host response are.... Thanks

*June 12, 2013*

**Chemistry**

C2H6 gas and CO2 gas are contained separately in 1.0 L bottles. What do the gases in the bottles have in common? Assume both gases are at STP

*June 8, 2013*

**Biology**

Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you would do –step-by-step–when preparing this solution. Also show all calculations. Be sure all amounts include ...

*June 5, 2013*

**Math**

3√(11x^3y)÷-2√(12x^4y)

*June 2, 2013*

**Chemistry**

Describe the subatomic structure of the nucleus, including the structure of each nucleon. Describe the forces that hold the nucleus together Explain how beta emission works.

*May 31, 2013*

**Vectors**

A 10-kg mass is suspended by two strings of length 5m and 7m attached to two points in the ceiling 10 m apart. Determine the tension on each string. Round your result to one decimal place (include a vector and position diagrams)

*May 28, 2013*

**history**

What factor is primarily responsible for the sharp contrasts between Old World and New World civilizations?

*May 21, 2013*

**calculus (gr 12)**

the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...

*May 14, 2013*

**Grade 12 Calculus **

solve cosx= (squareroot3)/ 2 where 0 <(with a line underneath) x <(with a line underneath) 2 pie a) how many solutions are possible? b) in which quadrants would you find the solutions? c) determine the related angle for the equation. d) determine all the solutions for ...

*May 11, 2013*

**History**

Where was segregation illegal after and during the boynton vs. Virginia case?

*May 9, 2013*

**history**

1. What was the ruling in the case Boynton vs. Virginia?+ m,n

*May 9, 2013*

**calculus**

hi im back.. solve cosx= (squareroot3)/ 2 where 0 <(with a line underneath) x <(with a line underneath) 2 pie a) how many solutions are possible? b) in which quadrants would you find the solutions? c) determine the related angle for the equation. d) determine all the ...

*May 8, 2013*

**calculus**

Hi i have two questions: what is the exact value of cos 5(pie)/12? what is the exact value of cos2(pie)/9 cos(pie)/18 + sin2(pie)/9 sin(pie)/18? thank you

*May 8, 2013*

**geometry**

Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole? step by step on how to do it?

*May 8, 2013*

**programming**

draw a flowchart and write a program and pseudocode that prompts the user for a starting balance and then prints the number of years it takes to reach 100000 and also number of years it takes to reach 1000000

*May 8, 2013*

**2**

from 962 which eves number has 6 tens

*May 7, 2013*

**chemistry**

how many grams of carbon dioxide can be produced when 15.g of oxygen is reacted with 25.g of c2h2

*May 6, 2013*

**Biology**

How does the changes in the DNA code from CTT to CAT in the beta chain of haemoglobin affect cell activity?

*May 6, 2013*

**mill creek high**

what are some examples of archetype in the book

*May 6, 2013*

**Grammer Please Help!!**

Last night, Jason introduced me to a friend of his. Whose hair was all the way down to the back of his kness in a single dreadlock.

*May 2, 2013*

**algerba 2**

the length of a rectangle is (x-2)squared and the width is (5x+1) what is the perimeter of the rectangle

*April 19, 2013*

**Calculus**

1) Find the linearization of f(x) = sin(x) at x = 0 AND use it to estimate sin(pi/87.129)

*April 16, 2013*

**Math**

Suppose that you invest $6384 in an account that earns interest at an APR of 4.6%, compounded monthly. Determine the accumulated balance after 9 years.

*April 15, 2013*

**5th grade math 12-6**

Using

*April 15, 2013*

**Math**

Juan races his bicycle for 196ft a wheel of his bicycle turns 28 times as the bicycle travels this distance. What is the diameter of the wheel?

*April 13, 2013*

**matematicas**

Â¿cual es el area de un terreno rectangular de 15.5 x 10.1m?

*April 9, 2013*

**chemistry**

calculate the L of 5.00 M HCI required to neutralize 500.0 mL of 1.00 M Ca (OH)2

*April 9, 2013*

**grade 12 life orientation**

Air pollution is one such environmental problem that causes ill health, accidents, crises, [ [ [ and disasters within any community within South Africa or globally.Air pollution is a significant risk factor for multiple health conditions including respiratory infections, heart...

*March 30, 2013*

**7th Grade Social Studies**

Thanks a lot I got them all right! :)

*March 27, 2013*

**ap chemistry**

is there any online test that tells me in which area i am weak or strong?

*March 27, 2013*

**ap chemistry**

WHERE CAN I TAKE AP CHEMISTRY ONLINE DIAGNOSTIC TEST?

*March 27, 2013*

**Chemistry**

How many grams of silver will be produced on the reaction of 50.00g iron metal with an excess of a copper (ii) sulfate solution ?

*March 25, 2013*

**English 3**

a. survival of the fittest

*March 21, 2013*

**Physics**

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm x 2cm x 3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum current measured in ...

*March 20, 2013*

**statistics**

A service station has a pump that distributes diesel fuel to automobiles. The station owner estimates that only about 3.2 cars use the diesel pump every 2 hours. Assume the arrivals of diesel pump users are Poisson distributed. a. What is the probability that three cars will ...

*March 19, 2013*

**Chemistry ....help**

If NaNO3 is cooled from 70C to 10C ; how much solid NaNO3 will come out of solution as a solid salt? Help me !!!

*March 18, 2013*

**Office Management**

Thank you! :)

*March 16, 2013*

**Office Management**

Note: telecommuting has its advantages and disadvantages. It eliminates the hassle of driving to work in inclement weather or heavy traffic as well as the chore of finding a parking place. Some employees report that they get more work done at home, while others struggle to ...

*March 16, 2013*

**Office Management**

My reading knowledge would choose A. However - if seperating from work and family, how would a telecommuter succeed if they are having trouble. Then, I thought about C. Because they obviously can seperate work and hom because they are motivated and independent. At this point, ...

*March 16, 2013*

**Office Management**

Last one: Among the following employees, a person who _______ would most likely succeed as a telecommuter. A. has difficulty separating work and family B. has a hard time prioritizing work tasks C. is very motivated and independent D. is very outgoing and social

*March 16, 2013*

**Office Management**

That is what I thought, but when I was looking over my previous answer for this exam, the I have had 4 answers with the Letter D. I was very unsure! :/

*March 16, 2013*

**Office Management**

When conducting a performance appraisal, it's important for the supervisor to A. provide only positive feedback no matter what the actual performance has been. B. avoid addressing employee concerns until after the appraisal has been signed by the employer. C. make sure the...

*March 16, 2013*

**URGENT!**

You are correct - I posted D... And I was incorrect.

*March 15, 2013*

**URGENT! **

Ian admits to and corrects bookkeeping mistakes right away. Shin Lee reported a conflict-of-interest issue to her supervisor immediately. Who is acting ethically? A. Neither Ian nor Shin Lee B. Both Ian and Shin Lee C. Ian only D. Shin Lee only

*March 15, 2013*

**Who is correct?**

Disregard - The answer is Sarah. Note: Costs of operating an office—rent, salaries, utilities, etc.—are considered overhead.

*March 15, 2013*

**Who is correct?**

Sarah says that overhead includes utility, rent, and salary costs. Jonas says that overhead includes liabilities and accounts payable.

*March 15, 2013*

**PLEASE HELP !!**

This answer was incorrect - The correct answer is "CHECK"

*March 15, 2013*

**PLEASE HELP !!**

Thank you - Scenario: Returning an item to a department store with a receipt and they'll refund you for the products being returned. Right?

*March 15, 2013*

**PLEASE HELP !!**

Which of the following would require a cash receipt? A. Credit memo B. Purchase order C. Check D. Refund

*March 15, 2013*

**Office Finances**

The answer is D per a tutor! :)

*March 15, 2013*

**Office Finances**

Which of the following would require a cash receipt? A. Credit memo B. Purchase order C. Check D. Refund

*March 15, 2013*

**math**

It was kinda hard.

*March 11, 2013*

**History**

where can I find thesis of women right Seneca fall convention. How did it happened? The effect? When did it start?

*March 10, 2013*

**Chemistry**

What is the volume of 0.674 kg of acetylene, C2H2, at STP?

*March 7, 2013*

**math**

can one angle of a right triangle measure 100 degrees?

*March 5, 2013*

**Life orientation**

Yes

*March 5, 2013*

**Math**

A drawer contains n socks. When two are drawn randomly without replacement, the probability that both are red is 5/14. What is the smallest possible value of n

*March 4, 2013*

**statistics**

8) Why did you choose this figure as the warranty? What percentage of bulbs would need to be replaced if you chose a warranty of 7000 or 7500? Justify your answer statistically. How do you explain this to the board of directors, marketing people and financial people?

*March 3, 2013*

**statistics**

7) Your employer, Woodbridge Electric Inc., wants to offer a warranty on the new compact fluorescent light bulb that they have produced and tested. You are called into a meeting and operational experts provide the following data: mean bulb life = 8000 hours, standard deviation...

*March 3, 2013*

**Chemistry**

How much energy is required to heat 36.9g of ice at 0 degrees celsius to water at 0 degrees celsius?

*March 2, 2013*

**Chemistry**

Mg + HCl ----> MgCl2 + H2 If the water in tube is evaporated , the other product , a white salt remains . Write the balanced chemical equation . Ans: Mg + HCl ----> MgCl2 + H2 + H2O I don't know how to balanced it . I'm confusing where O is in reactants to ...

*February 27, 2013*

**math**

How else can you get ninety hundredths?

*February 21, 2013*

**Statistics **

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 15% of your total grade, each major test is worth 22.5...

*February 19, 2013*

**Chemistry**

CH4(g) + 2O2(g) = CO2(g) + 2H20(g). What volume of O2 is required to react with 2.0 mol CH4 at 50 degrees Celsius and .500 atm?

*February 18, 2013*

**math**

how do i solve -9(w-3)=8w-7?

*February 13, 2013*

**Algebra**

Thank you

*February 8, 2013*

**Algebra**

Tell whether the equation is a function: 1) y = x-3 ; 2) y = -3/4x ; 3) x = -11 ; 4) x = 8 ; 5) y = 2(x+1)

*February 8, 2013*

**physics**

0.671

*February 7, 2013*

**math **

what is 2 tens from 3 tens?

*February 7, 2013*

**Math**

I dont care losers

*February 6, 2013*

**Math (probability)**

Three members of a 12 person singing group are going to be chosen to sing a song in their coming concert. A) how many different groups containing 3 people can be chosen from the 12 members of the singing group? B) what Is the probability that mike and Jo will both be in the ...

*January 30, 2013*

**Math **

2. Three members of a 12 person singing group are going to be chosen to sing a song in their coming concert. A) how many different groups containing 3 people can be chosen from the 12 members of the singing group? B) what Is the probability that mike and Jo will both be in the...

*January 30, 2013*

**Chemistry**

What is the mole fraction of solute in a 3.26 m aqueous solution?

*January 25, 2013*

**chemistry**

What mass of lead (II)chloride would precipitate if a solution containing 8,28 g of lead (II) ions(Pb2+) reacts with excess HCl?

*January 24, 2013*

**Physics HELP!!**

Two iron spheres each have a volume of 10 cm^3 and a mass of 78g. How many electrons must be placed on each sphere so that the electrostatic force of repulsion between them just balances the force of gravitational attraction? Assume the distance between the spheres is more ...

*January 23, 2013*

**Earlychilodhood education**

B. "I don't really know, Karen."

*January 20, 2013*

**Chemistry - Biology**

Explain why glucose is improtant to humans ? Ans:Glucose is important to the body cecause it helps the reporduction of cells, coposition of proteins and nucleic acids foundin all cells. It helps growth and repairs tissues . Is that correct??

*January 15, 2013*

**Math **

During swim lessons,the teacher passed out 23 pairs of goggles. there are 10 pairs left. how many pairs of goggles did the teacher have at the start?

*January 9, 2013*

**Government **

Monetary policy differs from fiscal policy in that a. it has to be exercised by the legislature. b. the policy goals are very different. c. it is a slower process than fiscal policy. d. it is a faster process than fiscal policy. e. none of these answers are correct.

*January 8, 2013*

**english**

Identify the type of subordinate clause in the following sentence. If we remember to brush our teeth, we will get fewer cavities. a)noun b)adjective c)adverb

*January 6, 2013*