Saturday

January 31, 2015

January 31, 2015

Total # Posts: 223

**maths**

The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?
*December 1, 2014*

**MATHS**

Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the church must have to be ...
*November 1, 2014*

**Physics **

A coil is wrapped with 200 turns of wire on the perimeter of a square frame of sides 20.5 cm. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 2.01 Ω. A uniform magnetic field is turned on perpendicular to the plane of the ...
*October 23, 2014*

**Physics **

An electron in an electron beam experiences a downward force of 2.0 x 10^-14 N while traveling in a magnetic field of 8.8 x 10 ^-2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s
*October 16, 2014*

**Physics**

It says its wrong
*October 16, 2014*

**Physics **

A solenoid 74.5 cm long has 350 turns and a radius of 2.26 cm. If it carries a current of 1.69 A, find the magnetic field along the axis at its center. Answer in units of T
*October 16, 2014*

**physics**

In 10 seconds a car accelerates 3m/s^2 to 90m/s. How fast was the car going before it accelerated?
*September 29, 2014*

**hca311**

In general, what is the main difference in opinion of the House and the Senate? Whose viewpoint do you agree with? How do these viewpoints impact financial challenges facing health care leaders?
*September 18, 2014*

**physics**

An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)
*July 15, 2014*

**business**

Imagine this team is in a room together brainstorming and working on a team project. Using your experience and what you've learned this week, suggest a design for a room that would facilitate team interaction. In the team discussion area, respond to the following: How ...
*November 12, 2013*

**english 125**

Support your views with at least one example of a dramatic text and one example of a poem
*August 14, 2013*

**General Math**

I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the return for the stock ...
*July 21, 2013*

**Chemistry **

11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?
*January 27, 2013*

**math**

The highest point on a trail, a pass with elevation of 1116 m, can be attained by climbing a 3.20 mile route from a waterfall, elevation of 60 m. The elevation gain from the waterfall to the pass is ___ feet. Do I just subtract 1116 - 60 = 1056 m and convert to feet? What is ...
*January 20, 2013*

**URGENT Chemistry Question!**

This might be a silly question, but... Is 6-8 on the pH scale considered neutral? If so, 6.23 pH is neutral and 8.78 should be considered basic. Is this correct?
*January 14, 2013*

**Chemistry **

I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search it on the ...
*January 13, 2013*

**Chemistry**

How do you write the chemical equation of the dissociation of nicotinic acid, C5H4NCOOH, in water?
*January 13, 2013*

**math**

An empty bucket is put under two faucets. If one faucet is turned on alone the bucket fills in 6 minutes. If the other faucet is turned on alone the bucket fills in 4 minutes. If both are turned how many seconds will it take to fill the bucket?
*January 7, 2013*

**Coordination Chemistry**

A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could point me in the ...
*December 1, 2012*

**Algebra**

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.
*November 4, 2012*

**Algebra**

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.
*November 4, 2012*

**chemistry**

When the iron(II) ammonium sulfate was mixed with the ferrocyanide ion, the precipitate was initially white but turned blue upon exposure to air. What happened to iron(III) ion when the precipitate turned blue?
*October 21, 2012*

**French 2**

Ma Jupe est trop longue (pantalon)
*October 21, 2012*

**Math**

22+49=
*October 15, 2012*

**Chemistry! Test tomorrow, pls help !**

we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 % but i dont ...
*October 4, 2012*

**Chemistry Help! **

Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?
*October 4, 2012*

**Chemistry**

thank you so much!
*October 4, 2012*

**Chemistry**

is delta T supposed to stay in Celsius or should i convert it to kelvin ?
*October 4, 2012*

**Chemistry**

The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of octane (C8H18) was ...
*October 4, 2012*

**Math**

You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.
*September 30, 2012*

**Chemistry**

What volume (in liters) is occupied by 3.85×10^22 nitrogen molecules at 105 C and 255 mmHg?
*July 27, 2012*

**Statistics**

A comparison is made between two bus lines to determine if arrival times of their regular buses from Denver to Durango are off schedule by the same amount of time. For 51 randomly selected runs, bus line A was observed to be off schedule by an average time of 53 minutes, with ...
*July 11, 2012*

**computers**

future impact of mobile computing on desktop computing
*June 11, 2012*

**computers**

what is the future of email in India after real time communications on social network
*June 11, 2012*

**computers**

explain the scope of 6th sense technology in upcoming input & out\put devices
*June 11, 2012*

**computers**

write the features of next generation micro processers
*June 11, 2012*

**physics**

A steradian is a measure of solid angle. Imagine that you are at the center of a hollow sphere of radius R. Now consider an area A of that sphere. Divide that area by R^2 and you have the solid angle subtended by A, in steradians. A full sphere subtends a solid angle of 4 pi ...
*June 11, 2012*

**physics**

From a cliff that is 8.2 m above a lake, a young woman (mass 42 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength?
*April 23, 2012*

**Gloabl History**

What were the cause of the Korean War?
*February 8, 2012*

**Math**

From the top of a cliff 120 m above the water, the angle of depression of a boat on the water is 18 degrees. How far is the boat from the cliff?
*December 8, 2011*

**Math- Trig**

In an oblique triangle ABC, A=30 degree, and the perpendicular from C to AB is 12 inches long. Find the length of AB.
*December 8, 2011*

**trig**

what?
*December 3, 2011*

**trig**

Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.
*December 3, 2011*

**math- factoring**

factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3
*November 28, 2011*

**math- factoring**

factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3
*November 28, 2011*

**english**

ok thank you for your help
*October 3, 2011*

**english**

sorry did not see the mistake but in the whole is the paragraph much better than what it was before?
*October 3, 2011*

**english**

please read hte above paragraph and check if it s is correct and if any changes need to be made
*October 3, 2011*

**english**

so to improve it i could use more complex sentences and a range of vocabualry or? And would this paragraph be ok: i walk vigilantly to the first room, looking around me if there is someone coming behind me. open the door with great care and let me palm slide across the wall to...
*October 3, 2011*

**english**

I open the door to the first room. I look for the switch, the light turns on. The walls are red in colour and the curtains are blue so thick that not a single light can peep through. how can i improve this paragraph??? please help
*October 3, 2011*

**math**

the radius of a nickel is 1centermeter. if 10 nickles are placed in a row, how long will the row be?
*September 28, 2011*

**Chemistry**

What is the theoretical molarity value of HCL
*June 19, 2011*

**English - To Kill A Mockingbird**

You could talk about how Aunt Alexandra changes throughout the novel, from a mean lady to a more comforting and caring lady of the Maycomb community
*June 12, 2011*

**child care**

thank you!
*April 26, 2011*

**child care**

m a s t u r b a t o r y
*April 26, 2011*

**child care**

The first disorder unique to children and adolescents was? a.!@#$%^&ory insanity b.mental retardation c.moral insanity d.depression i thought b but i wasnt sure please help
*April 26, 2011*

**Math**

Whom should you see at the bank if you need to borrow money?
*April 13, 2011*

**physics please help**

Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by the other two charges? ...
*March 22, 2011*

** Calculusss ( pleassee someboddy heelp )**

an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong plane is over the airport.?When will they be the...
*March 18, 2011*

**calculussCalculuss ( pleassee heelp )**

Your Open QuestionShow me another » Calculuss homeworrk heelp? A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical directly away from...
*March 18, 2011*

**Math**

What is x to the fourth power minus 20x plus 64 equals 0
*March 9, 2011*

**Science**

1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume of 100cm3, and ...
*March 8, 2011*

**Science**

Officials have found certain amounts of hazardous Fe3+ ions in the town of Scienceville's water supply. Using your knowledge of chemical reactions, suggest a way to eliminate this ion from Sciencevills's drinking water supply. Provide a thorough explanation. This is a ...
*February 27, 2011*

**childhood**

thank you so much
*February 20, 2011*

**childhood**

it has been propsed that there is a tendency for parent to trat full term babies better than preterm babies a big reason is ? a. that a full term infants dont cry as much. b. that the behavior of pre term babes is more annoying and irratible c. that pre term infants demand ...
*February 20, 2011*

**Grade 10 Science**

Why is the name for the ionic bond FeS Iron (II) Sulphide when the charges on iron and sulphur are +2 and -2? Shouldn't the name be Iron (I) Sulphide? Same goes for Copper (II) Sulphide. Please explain!
*February 15, 2011*

**business math**

What is the total amount of tax due on a property with an assessd value of $315,200? The propery tax rate is 53.7 mills
*January 24, 2011*

**alisha**

a fire insurance policy has an annual premium of $780. what is the reguar refund if the policy is canceled by the insurance company after five months
*January 10, 2011*

**math**

a street vendor recored the following hot dog sales for the week 100 on monday, 87 on tuesday, 95 on wednesday, 125 on thursday, 210 on friday, 250, on saturday, and 57 on sunday. what is the mena sales per day
*January 10, 2011*

**8th grade**

I need help with intergers 3.2x10 3
*October 12, 2010*

**chemistry**

I need to calculate the density, with work shown. 50.0 mg of a gas which occupies a volume of 0.0064 L ?
*October 7, 2010*

**chemistry**

How many grams of Al will react with 3.00 mol of 0(2)?
*September 26, 2010*

**math**

What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to $20,000 within five years?
*September 23, 2010*

**math**

The Patel family recently purchased a home, taking out a mortgage of $235,000 at 8½% for 25 years. Excluding taxes and insurance, what is the monthly PITI payment of their loan?
*September 23, 2010*

**math**

What would be the monthly payment on a $90,000 mortgage at a rate of 7.5% interest for 30 years?
*September 23, 2010*

**math**

What is the future value of an ordinary annuity of $12,000 per year, for three years, at 9% interest compounded annually?
*September 23, 2010*

**math**

Shawn bought a home for $100,000. He put 20% down and obtained a mortgage for 30 years at 5½%. What is the total interest cost of the loan?
*September 23, 2010*

**math**

Ramon owns a home that was appraised for $132,600. Ramon’s credit union is willing to loan an amount up to 70% of the appraised value of a home. Based on this information, what is the maximum potential amount of credit that’s available to Ramon for a home equity loan?
*September 23, 2010*

**math**

thank you
*September 23, 2010*

**math**

John and Paul work together at a music store. In one afternoon, they sold a total of 41 CDs. If Paul sold 9 more CDs than John, how many CDs did John sell?
*September 23, 2010*

**physics**

i think it is acceleration=change in velocity /tim
*September 21, 2010*

**4th grade**

the meaning of median range
*September 20, 2010*

**gography**

thnk u
*September 16, 2010*

**gography**

what is a demographic transition model???
*September 16, 2010*

**7th grade Hawaii**

What can the public do to help get more land zoned for agriculture? How many farmer's markets are in Hawaii? Do local farmers struggle to make a living? How many farmers are in Hawaii (or on each island)?
*September 16, 2010*

**math**

the awser is 1 cent
*September 9, 2010*

**math**

if 150ml of can cost $1.26 than how much will it cost for 1ml??
*September 9, 2010*

**fractured math definitions**

A group of notes
*September 8, 2010*

**math**

4*5+8, How do you do this? The star means times multiply?
*August 31, 2010*

**childcare**

the answer is D it is on page 163 in the book and under concepts!!
*August 22, 2010*

**college**

what does 'wrap around' and 'flop down' mean?
*August 17, 2010*

**geometry**

What are corresponding sides?
*June 30, 2010*

**chemistry**

When a 0.5725 g sample of Lysol was titrated with 0.100 M NaOH, and endpoint was obtained at 15.00 mL. What is the percent of HCL in the lysol sample?
*June 21, 2010*

**chemistry**

Where do I get the variable from? Where does NaOH come from?
*June 21, 2010*

**chemistry**

Earl N. Meyer found that it took 26.54 mL of a 0.0100 M KOH solution to reach the equivalence point for the titration of 25.00 mL of HCL. What is the molarity of the HCL?
*June 21, 2010*

**chemistry**

What is the ph of a 0.00100 M HCl solution?
*June 21, 2010*

**Science**

I want a catchy prahse for my topic- experiment"Can water be split into hydrogen and oxygen?"
*June 15, 2010*

**Sci**

I want a catchy prahse for my topic experiment"Can water be splitted into hydrogen and oxygen?"
*June 14, 2010*

**chemistry**

Why is it 5 H2O?
*June 14, 2010*

**chemistry**

write the reaction for the dehydration of CuSO4 . XH20?
*June 14, 2010*