Sunday

April 19, 2015

April 19, 2015

Total # Posts: 811

**Maths- Please help**

Many thanks Reiny
*April 19, 2015*

**Maths- Please help **

How do i work out the mass of a flywheel. I am given the density as 7500kg/m3, a 500mm diameter and a 10cm thickness. Please help
*April 19, 2015*

**science**

A car,mass of 1500kg,accelerates at 2m/s from rest. Find 0-60mph time, use 1 mile=1613m
*April 19, 2015*

**chemistry**

What is the volume of dry O2 gas at STP, if it had a volume of 5.00 L at 103 kPa and 300 K?
*April 15, 2015*

**chemistry**

Consider the reaction 2 NO2 (g) ⇌ 2 NO (g) + O2 (g). If the initial partial pressure of NO2 (g) is 3.0 bar, and x is the equilibrium pressure of O2 (g), what is the correct equilibrium relation?
*March 22, 2015*

**trapezoidal method**

dy dt = 1 + (t − y)^2, t ∈ [2, 3], y(2) = 1 use a step size of h = 1 and the Trapezoidal method to calculate by hand a numerical value for Y1 (≈ y(t = 3)).
*March 10, 2015*

**Geometry**

A red cross helicopter takes off and flies 75km at 20degree south of west. There it's drops off some relief supplies. It then flies 125 km at 10 degree west of north to pick up three medics. A. Make an accurate drawing of the two vectors decribed? B. draw the resultant it ...
*March 10, 2015*

**math**

18*5 1/16=
*March 4, 2015*

**math**

5*5 1/16=
*March 4, 2015*

**Chemistry**

calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.
*March 3, 2015*

**Simultaneous equations **

3x-14y=O and x-4y+1=0
*March 1, 2015*

**logic and design**

algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. Idon't know if i have enough code start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else wear t-shirt...
*January 30, 2015*

**physics**

Its 900kg/m^3 for the density of liquid I think.
*January 19, 2015*

**Physics**

a rectangular box of negligible mass measures 5m long,1m wide and 0.5m high. How many kilograms of mass can be loaded into the box before it will sink in a freshwater lake?
*January 6, 2015*

**Math**

A carton contains 1 8/9 liters of apple juice. Rosalia drinks 1/6 liter of the juice every day. How much apple juice is left in the carton after a week?
*December 9, 2014*

**physics**

If an atom has an electron in the n = 5 state with ml = 3, what are the possible values of l?
*November 24, 2014*

**accounting**

which is an operating expense a salaries expense b payroll expense
*November 22, 2014*

**Chemistry**

Hello,Sorry, May I know what if the Ksp of both substances no different much??
*November 18, 2014*

**Chemistry**

The Ksp values of BaSO4 and SrSO4 are 1.1x10^-10 and 3.8x10^-7 respectively. Calculate the concentrations of Ba2+, Sr2+, and SO4 2- in a solution that is saturated with BaSO4 and SrSO4.
*November 18, 2014*

**statistics **

A researcher finds that two continuous, random variables of interest, X and Y, have a joint probability density function (pdf) given by: f(x,y)={cxy 0<=x<=1,0<=y<=1,x+y=>1, .........0 otherwise where c is a constant. (i) Find the value of c so that f(x,y) ...
*November 13, 2014*

**statistics **

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
*November 13, 2014*

**statistics **

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
*November 13, 2014*

**chin**

The following data shows the annual salaries of 12 randomly selected employees of a company (in £ 1000’s) on the X-axis and the average number of days they have taken days off work in the last 10 years on the Y-axis. Y X Y X 11.1 29.6 9.6 39.2 8.4 58.6 10.9 46.8 8.7...
*November 13, 2014*

**chin**

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
*November 13, 2014*

**English**

Would down to earth be considered a character trait?
*November 12, 2014*

**Algebra**

"If possible, completely factor the expression. (If the expression is not factorable, enter NF.) x2 − 6x − 7"
*November 10, 2014*

**social studies**

why did a land bridge emerge between asia and north america
*October 28, 2014*

**History**

What was Thomas Jeffersons stance on the Declaration of Independence?
*October 15, 2014*

**algebra**

Foursquare provides a service that allows your friend to know your whereabouts by checking in . From march 2010 to march 2011 it experienced amazing growth. The function : F(x)=1/18x^2 - 1/12^x + 1/2 Evaluate F(3)? Determine when foursquare had 4.25 million users ?
*October 12, 2014*

**algebra**

suppose that an employee receives 7% increase in salary each year and that sequence a^n models the employees salary after n years. Is this sequence arithmetic, geometric or neither ? and please explain
*October 12, 2014*

**Algebra **

Darren McFadden of Arkansas placed second overall in the Heisman Tophy voting. Players are given 3 points for every first place vote, 2 points for every second-place vote, and 1point for every third place vote. McFadden received 490 total votes for a total of 878 points. If he...
*October 12, 2014*

**English**

What is your stance on BASE jumping
*October 9, 2014*

**English**

Are the authors stance and opinion similar ? Can you give me an example of each?
*October 9, 2014*

**History **

What is the importance of Samuel de Champlain colonizing Quebec for France
*October 1, 2014*

**History**

What is the importance or effect of these 1. France is a latecomer in the scramble for New World real estate. 2. French Catholic missionaries, notably the Jesuits, labored zealously to save the Indians for Christ and from the fur-trappers. 3. William Pitt, the elder, becomes ...
*October 1, 2014*

**English**

Can you help me come up with a really good introduction for my essay of the narrative of the life of Olaudah Equiano, that deals with his opinion of white men on the ship .
*September 29, 2014*

**Math**

you complete 3 cm of a necklace in1 hour. Each hour after the first hour you triple the length of the necklace. What is the length of the necklace after 3 hours?
*September 23, 2014*

**English**

How does the perspective of white crewmen toward the captives help support the main idea in "from the Interesting Life of Olaudah Equiano"
*September 18, 2014*

**English **

What is the relationship between literature and place
*September 18, 2014*

**Pre-Calculus**

Hello! Can someone check and see if these answers are correct? Thanks! 1.) If a line with slope of 1/2 is perpendicular to another line, then the slope of the other line is -2. TRUE or FALSE? (I choose True) 2.) If Segment QR || Segment TU and the slope of Segment TU is -3, ...
*September 12, 2014*

**microeconomics**

Using MS Excel or a table in MS Word, complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data). Assume that the price is $165. Assume the fixed costs are $125, at an output level of 1. Assume that the data represents a firm in pure competition. Show your calculations. ...
*September 10, 2014*

**Physics**

A sailboat runs before the wind with a constant speed of 4.0m/s in a direction 34∘ north of west. how far west has the sail boat traveled in 29 minutes
*September 2, 2014*

**math**

calculate the resistances of (a) 100-watt 120-volt incandescent lamp, (b) a 750-watt 115-volt toaster, (c) a 1300 watt 110-volt portable iron.
*August 24, 2014*

**Corporate Finance**

180000
*June 28, 2014*

**Org Chem **

Caffeine has a distribuation coefficient of about 8 between Me Cl2 and water. Given 30ml of water containing 10 grams of caffeine. a. How much caffeine can be extracted with one 30mL portion of MeCl2? b. How much caffeine can be extracted with three 10mL portions of Me Cl2? c...
*June 22, 2014*

**accounting**

72200
*June 20, 2014*

**math**

A right cone has a height of 8cm and of volume of 250cm^3. Determine the radius of the base of the cone to the nearest centimeter.
*June 4, 2014*

**math**

44
*May 28, 2014*

**math**

How much money I saved if I follow this number pattern 5,10,15,?20?30
*May 26, 2014*

**troy Academy**

which of the following statements is the best supported by the new studies
*May 8, 2014*

**troy Academy**

based on the results of the studies, what should an elementary school teacher do to ensure that a child with an unusual name develops normal intellectual ability
*May 8, 2014*

**troy Academy**

the overall effect of the five amendments was to extend the vote to
*May 8, 2014*

**troy Academy**

a comparison of the average temperatures on any given day at points Z, X, and U on the globe would probably show that the temperature at point X is
*May 8, 2014*

**TROY Academy **

president kennedy was calling on u.s citizens to
*May 8, 2014*

**statistics**

It is known that the population mean for the Quantitative section of the GRE is 500, with a standard deviation of 100. In 2006, a sample of 400 students taking the GRE, whose family income was between $70,000 and $80,000, had a quantitative GRE score of 511. Perform a one-...
*April 29, 2014*

**statistics**

The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...
*April 16, 2014*

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
*April 16, 2014*

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
*April 15, 2014*

**statistics**

The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...
*April 15, 2014*

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
*April 15, 2014*

**math**

if a car has decreased in value by 10% and is now worth 22,000.00 how much was the original price
*March 31, 2014*

**Finance**

24.34
*March 19, 2014*

**math-Algebra**

Anonymous: Your answer is INCORRECT. The correct formula is: k=xy k= 8*10 k=80 y=80/x y=80/6 simplify the fraction to y=40/3. I am a homeschool teacher.
*March 11, 2014*

**English**

peace I beleive
*March 5, 2014*

**math**

k-3/7k=-6/7 3.5+6.4x=x-3.4
*March 5, 2014*

**Statistics**

Assume it is known that the probability of birth is equal in all months. What is the probability that in the STAT class of 120 students, exactly 20 students have their birthdays in either August or September? Solve using (i) the exact Binomial distribution, (ii) the Normal ...
*February 28, 2014*

**Math**

Assume an annual 6% return and annual compounding if Tara saves $2000 a year for 40 years how much money would she have at the end?
*February 14, 2014*

**algebra based physics**

24m/s
*February 10, 2014*

**math**

Select the sum of the series E^5k=1^k2.
*February 8, 2014*

**math**

Select the first five terms in the arithmetic sequence an = 8n, starting with n = 1
*February 8, 2014*

**physics**

a 50-N force is directed at an angle of 50 degrees above the horizontal. resolve this force into vertical and horizontal components.
*February 3, 2014*

**math**

Determine the equation of g(x) that results from translating the function f(x)=x^2+9 upward 15 units. A)g(x)=(x+24)^2 B)g(x)=(x + 15)^2+9 C)g(x)=x^2-6 D)g(x =x^2+24
*February 2, 2014*

**math**

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x^2 + 4x + 7.
*February 2, 2014*

**math**

Determine the equation of g(x) that results from translating the function f(x) = x^2 + 9 upward 15 units
*February 2, 2014*

**math**

f(x) = (x + 2)^2 to the right 12 units
*February 2, 2014*

**math**

Solve for in the equation x2 - 3x - 40 = 0.
*February 2, 2014*

**math**

Determine the equation of g(x) that results from translating the function f(x) = x^2 + 9 upward 15 units
*February 2, 2014*

**math**

The range of f(x) = ax + b is the set of all real numbers given that a and b are real numbers. Which produces a counter example to her statement?
*February 2, 2014*

**math**

Write an equation that uses 18 - ? and 10 + 2. Explain how to decide which numbers would make it true.
*January 22, 2014*

**Physics**

A car traveling at a velocity of 24 m/s is accelerated uniformly at a rate of 2 m/s¶ for 8 seconds. What is the final velocity of the car?
*November 14, 2013*

**Physics**

Police find skid marks 180 meters long on a highway where a car made an emergency stop. Assuming that the deceleration was a = 10 m/s¶ (about the maximum for dry pavement), how fast was the car traveling before the brakes were applied?
*November 14, 2013*

**Calculus **

A 17 foot ladder is leaning against a wall. The bottom of the ladder is moving out away from the wall at 0.6 feet per second. The top of the ladder then begins sliding down the wall. How fast is the top of the ladder going when the bottom is 8 feet away from the wall?
*November 3, 2013*

**Math**

how did you get BE=32?
*October 28, 2013*

**Flowers for Algernon book**

Think about all the times knives or razors appeared in the story. How could they be symbolic?
*September 15, 2013*

**Flowers for Algernon**

Explain Charlie's problems with women. Why does he have trouble getting close to them?
*September 15, 2013*

**health**

ms. sue you don't have to be disrespectful with it, all their asking for is help nothing more nothing less so chill out!
*July 9, 2013*

**calculus**

x/a^2+y/b^2-z/c^2=1
*July 8, 2013*

**World history**

Well it's definitely not C!!
*June 10, 2013*

**accounting**

•The Bank Account as a control device that helps to protect cash. One of the requirements is to conduct periodic bank statement reconciliations. Using the following data, complete a bank statement reconciliation or EEE Electric for the month of September. The Bank ...
*June 3, 2013*

**accounting**

•XYZ Company signed an 18-month, $20,000, 8% note on June 1, 2006. The amount of interest to be accrued on December 31, 2006, assuming no prior interest entry is:
*June 3, 2013*

**economics **

Explain the economic logic behind OPEC decision to reduce output
*May 26, 2013*

**Health**

A - Thigh
*May 23, 2013*

**Geometry**

What is the perimeter and area of a rectangle that has a width of 6 inches and length of 8 inches
*May 20, 2013*

**Math **

The hexagon below is made up of six equilateral triangles with sides of 6 centimeters each. The height of each triangle is 5.2 centimeters. What is the area of the hexagon
*May 11, 2013*

**Math**

Do you need to regroup to find product of 34 and 3? Explain
*May 8, 2013*

**economics**

What are welfare payments or consumer subsidies?
*May 1, 2013*

**english home language literature**

What does the opening sentence imply about Gatsby's parties?
*April 25, 2013*

**chemistry**

Balance the following redox reaction by inserting the appropriate coefficients. H^+ +CrO4^2- +NO 2^- =Cr^3+ +H2O+NO3^-
*April 19, 2013*

**chemistry**

If a solution containing 34.576 g of mercury(II) perchlorate is allowed to react completely with a solution containing 10.872 g of sodium sulfate, how many grams of solid precipitate will be formed?
*April 19, 2013*