Friday

July 25, 2014

July 25, 2014

Total # Posts: 817

**chem**

This is how far i got 2330g *4.184J/g degree C *(100 degree C-unk) =537,000J so 9748.72J * unk =537,000J so 537000/9748.72=55.08 so 100-55.08= Initial temp of 44.92 degrees celsius :)

**CHEM**

is breaking an egg a chemical or physical change? is cooking an egg a chemical or physical change?

**Composition**

Reforestation or Deforestation?

**Composition**

Which topic do you think would be easier to research for an argument essay? Deforestation or Recycling?

**world civics**

provide 2 examples of the devastation diease caused

**physics**

Is the equation above used to determine the normal force exerted by the road on the car? When I used the equation I got (72)(9.8) - (72)(729)/88 = 1.2 (2 sig figs) This answer was incorrect. What am I doing wrong. And.... what equation can I use to figure out the 2nd part?

**physics**

A sports car of mass 950 kg (including the driver) crosses the rounded top of a hill (r = 88 m) at 27 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 72-kg driver. Express your answer using two significant fi...

**college Physics**

A car is traveling at 7.0 m/s when the driver applies the brakes. the car move 1.5m before it comes toa complete stop. if the car had been moving at 14m/s how far would it have continued to move after the brakes were applied? assume the braking force is constant. what is the f...

**Geographyand socity**

1. Meterology 2. Temperatures 3. Atmosphere 4. Hydrospere 5. The average yearly weather patterns in a given area. (I think these are correct.)

**Geometry**

for every letter n f(n) is added by the next number. 0,1 1,2 3,3 4,6, 5,10 6,15 7,21 8,28 9,34 10,43 11,53 12,64 13,76 14,89 15,103 16,118 17,134 18,151 19,169 20,188= answer

**MAT 116**

29/13u-18/13u 2/13v+16/13v 11/13u+18/13v= answer

**math**

it would look more of a rectangle but the sides should be thus: 6,6,7,7

**Physics**

i have done all my homework these 5 problems i could not understand.. my answers are due at midnight tonight im a senior in this physics course and math is generally my strong point but when it comes to things like this i try and i didnt get it so i posted the problem on here ...

**Physics**

A 160 N block rest on a table attached to a string and pulley. The suspended mass over the side of the table has a weight of 53 N. PART 1: What is the magnitude of the minimum force of static friction required to hold both blocks at rest? Answer in units of N. PART 2: What min...

**Physics**

omg thx so much!!!!

**Physics**

A car is traveling at 54.2 km/h on a flat highway. The acceleration of gravity is 9.81 m/s^2. PART 1: If the coefficient of kinetic friction between the road and the tires on a rainy day is 0.131, what is the minimum distance needed for the car to stop? Answer in unitsof m. PA...

**Physics**

yay thank you!!

**Physics**

The board sandwiched between two other boards weighs 92.6 N. If the coefficient of friction between the boards is 0.587, what must be the magnitude of the horizontal forces acting on both sides of the center board to keep it from slipping downward? Answer in units of N.

**Physics**

The coefficient of static friction between the 3.78 kg crate and the 38° incline is 0.306. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline? The acceleration of gravity is 9.8 m/s^2. Answer in u...

**Physics**

wat is the horizontal force??

**Physics**

sry but im a blonde so not even half of that just made sense! :(

**Physics**

A box of books wighing 339 N is shoved across the floor by a force of 506 N exerted downward at an angle of 33° below the horzontal. The acceleration of gravity is 9.81m/s^2. If µk between the box and the floor is 0.59, how long does it take to move the box 5.27 m, s...

**physics**

Final Velocity= VI + a(t) Distance= 1/2 (VI + VF)(t) you must first convert km/h to m/s and then you should be able to find your answers

**chemistry**

The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?

**chemistry**

The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?

**8th grade Math**

Put the following numbers in order from least to greatest. 0.0875, 7/8, 0.875%

**Algebra 1**

could you tell me where I can get the "why do girls like guys who wear shirts with eight buttons?" worksheet to print free online?

**statistics**

12. Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. © …………….. (d)…………….. Person Dexterity Anxie...

**Geometry**

On the line AD,if AC=24 and CD=32,how do you find the length of AD.

**chemistry**

What is the concentration (in molarity) of acetone in a solution prepared by mixing 11 mL of 4.0 M acetone, 16 mL of 0.02 M Br2, 11 mL of 1.0 M HCl, and 16 mL of water?

**math**

what is the appropriate graph for time and speed??

**Geography**

heeey :} do you have homeschool? or the classes in the computer? cause I have my classes by the computer, &this are my answers :D I'm on highland. pleaseeeee help me. :} if you got computer classes. xD

**math**

Reading readiness of preschoolers from an impoverished neighborhood (n = 20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9, with s = 2.08. a.Children below the 30th percentile are in need of special assistance prior to atten...

**Medical Terminology**

Why are some medical terminology is more common, while others are not as well known.

**8th grade Algebra**

Use the Distributive property to rewrite the expression and simplify. 6(y + 13)+ 21y

**Medical Terminology**

What are two example of how knowing medical terminology will help you provide good patient care?

**biochemistry**

A weak base has pKb = 9.25.. A. Calculate the % ionization at pH = 8.25 B. Calculate the % ionization at pH = 10.25 C. What is the pH when 50% of the weak base is ionized?. Is calculating ionization for pkb the same as pka? How do I go about doing it?

**Ap european history**

I will sure try :)

**Ap european history**

Most of the paper is written down I just didn't know how to organize it.... thank you

**Ap european history**

Writeacher that website is great! Thanks so much :) do you have any ideas on how to king of organize my paper?

**Ap european history**

That could work.... Thanks!

**Ap european history**

I have most of the paper i just need something to catch the readers attention at the begining and i can't think of anything.....

**Ap european history**

im writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages and i need a catchy intro.... please help!!(: ( thanks Ms. Sue you really helped :)

**AP european history **

im writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages, and i don't know how to make an outline....?

**statistics**

standard deviation on the 80 students individual average

**statistics**

2. The director of admissions at a large university advises students that the cost of textbooks will average more than $300 for a typical semester. A random sample of 80 students enrolled in the university shows a sample mean cost of $315.40 and a sample standard deviation of ...

**AP european history**

I'm writing a paper comparing and contrasting the government , art, and religion of ancient Greece, Rome, and the Middle ages and I have no idea how to even get started. Please help!

**9th grade**

summarize the parts of a controlled expirament.

**Economics **

Explain how decision making, interaction and the workings of the economy influences the marginal benefits and marginal costs associated with the decision to purchase a house?

**fisica 10mo**

sobre una rueda de radio r=0.5 m esta enrollada una cuerda que se desenrolla ejerciendo una fuerza de tracciÃ³n contante F 50 nt como muestra la figura 1.1 en 2 seg se han desarrollado 4 m. Se pide calcula: a. La aceleraciÃ³n tangencial de un punto de l...

**algebra 2b**

Determine in which direction the parabola opens y equals x2-7x plus 18?

**Math**

x^2y/5n^3/x^3y^5/15n Please help me solve!!!!!!!!!!!!!!!

**Algebra 1 **

use the distributive property to find 6 times 54?

**Physics**

When an automobile moves over a wide, closed loop of wire embedded in a road surface, the magnetic field of the Earth within the loop altered? Is a pulse of current produced? Can you cite a practical application for this at a traffic intersection?

**algebra**

2(x)+1=5 2(x)+1=5 2(x)=5-1 x=5-1/2 x=4/2 x=2

**algebra**

2(x)+1=5 2(x)+1=5 2(x)=5-1 x=5-1/2 x=4/2 x=2

**reading**

i dont understand this question nad i need an answer : make a list of words that would entice you to purchase a product. need answer:) thanx

**Pre-Algebra B**

Solve for y. 4-(y + 9)= 10 Please help!!!

**business**

making a good impression is vital, since we tend to form an opinion in about

**Algebra**

(5c-9)(5c+1)

**help with algebra**

(p-7)(p+8)

**9th grade**

(p^2-7)(p+8)

**Physics**

a) What is the tangential acceleration of a bug on the rim of a 6in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5 seconds? b) One second after the bug starts from rest, what is its tangential acceleration? What is its centripetal acceleration?

**Science**

What percentage of the sun is shine on the Earth in Maine during Spring

**chemistry**

balance this chemical equation: aqueous solutions of alumininum chloride and sodium carbonate are combined, producing alumininum carbonate

**Chemistry**

Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas

**chemistry**

Determine the ammoint of lead precipitate in grams that can be produced from 50 grams of ammonium chloride and excess lead II nitrate

**Math**

40% equals .4 and 4/10 which can be reduced to 2/5

**Math**

yes 1/7 is less then 1/6

**Health**

In the market for health insurance, what kind of asymmetric information causes adverse selection? Explain.

**Healthcare**

Give three examples in which the health provider has information that is unavailable to the health consumer.

**Healthcare**

Give three examples of asymmetric information in which the health consumer has information that is unavailable to the health provider.

**ethics**

Try the adc(.)org website

**chemistry**

Aqueous solution with a pH of 10.6 is diluted from 1 L to 1.5 L. What is the pH of the diluted solution?

**chemistry**

what is the pH of .28 M HNO3 (aq) at 25 degree celsius? (Kw = 1.0 x 10 ^-14)

**7th Grade Math**

Find the area of the circle described. Use pi= 22/7. Diameter= 1.4cm Please help!

**chemistry 101**

1008 cCal

**physics**

(4pi*10^-7)(4.8*380/.32) =____mT

**Math**

Use the rules of exponents to simplify each exponential expression. Your result cannot contain any negative exponents. Thank you for your help. (2m^2)^3 (4x^2y^4z^7)^0

**ENGLISH**

What do you think of when you hear the term academic honesty? How does knowing the difference among original ideas, common knowledge, and plagiarism help you stay honest when you write an academic paper? What are some of the consequences of not being academically honest?

**Chemistry**

The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.0 L container, will any liquid be present? If so, what mass of liquid?

**7th Grade Literacy**

What are 3 IMPORTANT characteristics that a class president needs? Please answer!!

**geometry**

How do you draw 224 degree angle???

**Science**

Yes it does.

**7th grade Literacy**

What are the characteristics that make a good class president? Please answer!!!

**math**

,duigfwgfhkbviy wegfcbiwefgbvywrywr wegbewyfhyrhyrgfbrurugz uwegbcfbcflyirhlgfb ffhvbfgfgyl gftfdgdgf tedtre dfevsdf dsfgdtef edg vdggdtdsvh ugfgsdtfgewvdh gqwfdvgweyfgwefgdcgwvewveds ewdvgetdtedv fdtvasfdadedftwftwa wtdcs sdsrfrfaddfacsddafdcsfcfgzcxscscfgcxhfsasadffxcdczaxcf...

**Chemistry**

Please help me !! Frequently in the distillation of methanol and water, the methanol distillate appears cloudy. To what might you attribute such an observation? Thanks.

**Biology**

The mitotic process provides a mechanism by which cells should be able to transfer their genomic contents from cell generation to cell generation without error or change. is this inviolate?

**Biology**

Where in the cell cycle can one find the phragmoplast? What is it's probable function?

**Chemistry**

Please help me Sketch a separation scheme showing how you would separate the following two component mixture: m-nitroaniline and hexanol. All the substances are soluble in ether. You can use any of the following solutions in your separation: aqueous hydrochloric acid, aqueous ...

**Pre-Algebra B**

5 | 4,5,5,6,6,6,7,8,8,9 6 | 0,0,1,1,2,2,2,3,4,4,4,5,6,7 7 | 0,1,1,1 How do you find the mean of this stem-and-leaf plot? Please answer!!

**Mathematics in Economy**

I'd like to add that the '2' after x and y means 'squared'.

**Mathematics in Economy**

A firm produces two different kinds A and B of a commodity. The daily cost of producing x units of A and y units of B is C(x,y) = 0.04x2 + 0.01xy + 0.01y2 +4x + 2y +500 Suppose that firm sells all its output at a price per unit of 15 for A and 9 for B. Find the daily productio...

**Geometry**

If each side of a regular pentagon is x^2 + 17 and each side of a regular hexagon is x^2 + 2x, for what value or values of x will the perimeters of the figures be equal?

**math**

Quadrant 2

**reading response to the personwho answered this**

thank you!! Ireally apreciate it!!

**reading**

when a prarie fire approached,farmers set __. What would it be? Please help me!!

**pre-algebra B**

Milli tosses a coin and a six-sided die.The numbers on the die are 1 through 6. What is the probability that Milli will toss a tail and roll an odd number?

**english**

Is there an adjective to describe someone who performs critical thinking?

**math**

evaluate the expression for the given value of the variable p + 13 when p = 8

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