Saturday

January 31, 2015

January 31, 2015

Total # Posts: 1,571

**Physics**

A bolt requires 15 Nm or torque to loosen it. How much force needs to be applied to a 20 cm long wrench to loosen the bolt? Assume the force is applied perpendicular to the handle of the wrench.
*November 14, 2012*

**Physics**

What is the orbital speed of a satellite of mass 490 kg in geostationary orbit?
*November 13, 2012*

**physics**

A crate of mass 96 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.14. What is the smallest radius of curvature, R, the truck can take, if the speed with which it is going around a circle is 2.9 m/s?
*November 13, 2012*

**business math**

sorry henry but your wrong....
*November 12, 2012*

**math**

Hannah's grade on her last math test was 4 points more than Mark's grade. Write an expression for Hannah's grade, using m as a variable. Evaluate the expression if m=92.
*November 11, 2012*

**science**

how much skin covers 1 of your alveoli?
*November 11, 2012*

**English**

Correct
*November 11, 2012*

**Economics**

(This homework question was removed due to a copyright claim submitted by K12 Inc.)
*November 4, 2012*

**math**

My hundredths digit is the product of 3 x 2. My tenths digit is the multiple of 3 that comes before the digit that is in the hundredths place. My thousandths digit could not be any greater. What number am I?
*November 1, 2012*

**elementary**

nuber sense minnie has 6 county cds and 5 rock cds.amanda has 5 rock cds and 6 country cds.who has more cds?explain.
*October 31, 2012*

**elementary**

explain it jake says that adding 0 does not change a sum.is he correct?explain.
*October 31, 2012*

**elementary**

write your own sentence using the words: me
*October 30, 2012*

**English**

Identify whether the italicized words in the sentences below are used as participles or verbs. She’s an EXPERIENCED chef; she should have no trouble finding work. participle or verb? I would say participle.
*October 29, 2012*

**Math**

IM GONNA HELP BECAUSE I DID NOT TAKE NO HONOR CODE. 1D 2C 3D 4A 5A 6A 7C 8C
*October 29, 2012*

**PHYSICS!**

ok so waht oyu do is you find the pressure at the level the top is at which you would use P0+gh(density) then you use PA=F so for your problem it would be 1.013x10^5 +1000x.09x9.8=102182 102182x(.1)^2=1021.82 N for the top for the botom you would jsut add .12 to your origional...
*October 28, 2012*

**elementary**

Explain it sandy said she could use addition to answer question 1 how could this be done?
*October 25, 2012*

**elementary**

number sense fabio said that there are 3 times as many people on a basketball team as on a tennis team.is he correct?why or why not. tennis 2 players basketball 5 players
*October 25, 2012*

**College Chemistry**

Calculate the number of Joules released when 75.0 g of water are cooled from 100.0 degrees Celsius to 27.5 degrees Celsius
*October 25, 2012*

**Chemistry**

a certain first order decomposition reaction has a half-life of 15.0 minutes. What is the rate constant for this reaction? what is the time it will take for the reaction to reach the 10% completion point?
*October 24, 2012*

**Chemistry**

A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the magnesium chloride ...
*October 24, 2012*

**Chemistry**

The addition of a non-volatile, non-electrolyte will increase the amount of your vapor found above the solution over that of the pure liquid? (True or False)
*October 24, 2012*

**math**

Find the area of a walkway that goes around a rectangular swimming pool. The pool has a length of 30 feet and a width of 18 feet. The walkway has a width of 4 feet all around the pool.
*October 24, 2012*

**Physics**

For the first part of this question I got 12.12m/s B. With the help of a friend the boy measures the height to which the ball returns and finds it to be 5.2 meters. How fast was the ball moving when it left the ground? I wrote this down mass of ball: 0.40kg height if house: 7....
*October 23, 2012*

**Chemistry I**

In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the calorimeter (J/*C-...
*October 22, 2012*

**Math**

3.4t+0.08=11
*October 22, 2012*

**Math**

-4b-5+2b=10
*October 22, 2012*

**Chemistry**

I titrated 0.25 grams of soda ash with 43.7 mL of HCl (0.115M) and 25 mL of H2O. I am getting over 100% sodium carbonate in my answer here are my steps that I took to get the answer can somebody help me see what I did wrong? mols HCl=(0.115M)x (0.0437L)=0.005 mol HCl 1/2 x (0....
*October 22, 2012*

**math**

Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1. A. –14 – (–6) = –8 B. 14 – 6 = 8 C. –14 – 6 = –8 D. –14 – (–6) = 8 i put d but it was rong
*October 22, 2012*

**elementary**

use, using,eat,eating,close,moan,wave,writing,looking,dream,skate,closing,trading,cleaning,clean,write,skating,waving,look,mail,mailing. write these spelling words vowels&conosonents all spelling words are vowels.no consonents.are u correct
*October 17, 2012*

**math**

the turning point for y= x^2-8x+2 is: A (2,-16) B (16,2) C (8,-2) D (-8,2) E (4,-14)
*October 16, 2012*

**English**

Instead of telling us how much you >>repent<< your outrageous conduct why dont you sincerely try to reform? Regardless of what you may think proper I do not >>deem<< it necessary for someone of your age to wear an evening gown to the dance. The TV ...
*October 16, 2012*

**elementary**

explain it josh says that if he divides 50 by 5,he will get 10.jeff says he shhould get 9.who is correct?explain.
*October 16, 2012*

**elementary**

gabriella and 4 friends shared a pack of 15 glue sticks equally.how many giue sticks did each person get?
*October 16, 2012*

**3rd grade**

erica counted 45 fingers when the students were asked who wants to play kickball.how many hands went up?
*October 16, 2012*

**maths**

the turning point for y=x^2-8x+2 is: A: (2,-16) B: (16,2) C: (8,-2) D: (-8,2) E: (4,-14)
*October 16, 2012*

**maths**

for the graph y= -(x-2)squared +1: Find the x intercepts please show all working :)
*October 16, 2012*

**Chemistry**

1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the system is cooled, ...
*October 16, 2012*

**elementary**

Draw an array. Then write a fact family to describe your array
*October 15, 2012*

**7th grade math pygorean theroem ms.sue correct**

always draw the diagrams out, it makes the question much more clearer and easier to understand. use the basic rule of C^2 = a^2 + b^2
*October 9, 2012*

**Live Tutoring**

Does anyone know where I can get inexpensive online tutoring that will not cost me $30.00/hr?
*October 9, 2012*

**Trig help?**

are these functions periodic? i - y=abs(sin(x)) = sin(x) ii - y=cos(X^2) iii - y = cos(sin(x)) I am completely lost on these :/
*October 9, 2012*

**Chemistry**

The volume of a sample of ideal gas at 25*C is 372ml. What will be the volume of the gas if it is heated at constant pressure to 50*C? What will be the volume of the gas if it is cooled to -272*C?
*October 8, 2012*

**ELEMENTARY**

How to prepare PSAT test from 3rd grade
*October 8, 2012*

**6th grade math**

how many hours dose it take for a rino to run 158,400 feet
*October 1, 2012*

**Dr. Bob, help please**

does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons there are, ...
*October 1, 2012*

**physics**

hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons ...
*September 30, 2012*

**physics**

hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons ...
*September 30, 2012*

**Calc 3**

In other words, divide the plane's normal vector so that the y components match (INCLUDING SIGN), then solve for the two remaining variables. For the example above this would mean; 2xi-j+2zk=7i+2j+3k becomes 2xi-j+2xk=(-7/2)i-j+(-3/2)k Now solve for x and z like so: 2x=(-7...
*September 27, 2012*

**physics (graphs)**

Hi, i'm doing a graph for density of an element as a function of atomic number. i'm trying to calculate the slope and it's asking me to include units. if density as a unit: g/cm^3, how would i write the units of the slope? which is basically density over atomic ...
*September 26, 2012*

**Social studies**

How were the ideas of Louis XIV and Philip II similar? How were they different?
*September 26, 2012*

**Social studies**

How were the ideas of Louis XIV and Philip II similar? How were they different?
*September 26, 2012*

**Social studies**

How were the ideas of Louis XIV similar? How were they different?
*September 26, 2012*

**algebra**

How do I use the distributive property to write (e+f)(-5) as an equivalent algebraic expression?
*September 25, 2012*

**Physics**

A gull is flying horizontally 8.17 m above the ground at 6.35 m/s. The bird is carrying a clam in its beak and plans to crack the clamshell by dropping it on some rocks below. Ignoring air resistance, what is the horizontal distance to the rocks at the moment that the gull ...
*September 20, 2012*

**Math**

the rectangle is 6.1 wide and 3cm high
*September 19, 2012*

**Math**

how could you use point I to estimate the midpoint of each side of the rectangle?
*September 19, 2012*

**Nutrition**

what is a vegetarian example of a complete protein?
*September 17, 2012*

**nutrition**

What is the role of amino acids in building protein?
*September 17, 2012*

**Chemistry**

Calculate the pressure and temperature at which 1.00 mole of CO gas will be in the same corresponding state as 1.00 mole of H2 gas at 2.00 bar and 30.0 degrees celsius. How do I approach this question?
*September 15, 2012*

**math**

divide 4 by x squared and write it in the form of axb where a and b are rational constants
*September 15, 2012*

**math**

A. 1,3,6,10,___,___ B. 1, 1/2, 1/4, 1/8,___,___ C. 1,3,9,27,___,___ D. 8,7,5,2,___,___ E. 49,47,52,50,55,___,___
*September 15, 2012*

**Physics**

A car slams on its brakes. When it slammed on its brakes, it was decelerating at 6 m per sec per sec. How high would the car have to fall from to have the same force?
*September 13, 2012*

**Maths**

f (x) = x2 - 4/ x2 - 1 This needs to be plotted onto a graph, but I don't know how
*September 12, 2012*

**chemistry**

If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for 10.0 moles of the reactant to decompose so that only 2.5 mol remains?
*September 4, 2012*

**accounting**

The following information is related to the Lilliput Veterinary Clinic for April 2010, the firm's first month of operation: Compute the cost of services rendered.
*September 3, 2012*

**math**

57.25 28.63 14.31
*September 3, 2012*

**Math**

find K so that the following function is continuous on any interval: f(x)=kx if 0¡Üx<3, and f(x)=2x^2 if 3¡Üx K=
*September 2, 2012*

**science**

mgco3 plus 2hcl plus mgci2 plus h2 h20 plus co2 if 10grames of c02 is produced calculate the mass of magnesium and hydrochoric acid reacted
*August 29, 2012*

**english11**

Which of the following phrases does NOT appear in the Declaration of Independence? life, liberty, and the pursuit of happiness all men are created equal these Colonies are, and of right ought to be, free and independent states we the people of the United States
*August 23, 2012*

**english 11**

4. Which of the following statements about Anne Bradstreet is NOT true? (1 point)Anne Bradstreet was never married. Anne Bradstreet was the first published poet in America. Anne Bradstreet was born and educated in England. Anne Bradstreet favored poems with regular rhyme ...
*August 23, 2012*

**english**

thank you!!
*August 23, 2012*

**english**

Which of the following statements about literary movements is NOT true? A. A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B. Ideas, concerns, or characteristics may be shared by literary movements. C. Literary movements may...
*August 23, 2012*

**General Mathematics**

Use a table of t-values to estimate the P-value for the specified one-mean t-test. Left-tailed test, n = 12, t = -3.412 Choose one below: P < 0.005 P > 0.005 0.005 < P < 0.01 0.01 < P < 0.025
*August 22, 2012*

**Algebra**

1. Determine whether the relation is a function. {(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)} 2. Determine whether the relation is a function. {(-5, -4), (-2, 9), (-1, -2), (-1, 7)} 3. Determine whether the relation is a function. {(-7, -1), (-7, 2), (-1, 8), (3, 3), (10, -...
*August 22, 2012*

**General Computer Science**

There are several interior routing protocols. Is there a place for each one of them? Discuss in what type of network each one would work best.
*August 22, 2012*

**General Economics**

• Businesses often decide between using automation and labor in production. An automotive environment may have high fixed costs and low variable costs, and an industry that utilizes manual labor for production will have low fixed costs and high variable costs. How would ...
*August 22, 2012*

**General Psychology**

1. Do you believe that people have an unconscious mind? If so, how does it affect thoughts, feelings, and behavior? 2) Have you ever changed a strongly held attitude? What caused the change for you? 3) Do you believe that you are free of prejudice? After reading this chapter, ...
*August 22, 2012*

**Accounting**

What is the purpose of financial statement analysis? What are some tools we might use to analyze financial performance? What might we use to benchmark our performance? Why?
*August 22, 2012*

**math**

thanks, tori
*August 21, 2012*

**math**

Can someone help me how to solve it. A new medically approved wheelchair was considered to be an improvement over a standard wheelchair by 325 out of 450 patients in a survery. 20) What is the margin of error for the survey? Round your ansewer to the nearest tenth of a percent.
*August 21, 2012*

**social studies**

the first native americans gathered what? (3 things) that's why we call them hunter-gatherers.
*August 20, 2012*

**English 125 introduction literature**

In your 150 words post, summarize the major similarities and differences between the forms of drama, poetry, and the short story. Demonstrate your ideas with textual examples from the course readings. In your response, include at least one example of each literary form. If you...
*August 20, 2012*

**physics**

Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate. The density of water ...
*August 19, 2012*

**physics**

a hemispherical bowl of radius 0.5 m is filled with water of density 997 kg/m^3. calculated the force exerted by the bowl. ans: 3840 N
*August 18, 2012*

**physics**

Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate. The density of water ...
*August 18, 2012*

**maths**

At a certain time of the day a post, 4m tall, casts a shadow of 1.8m. What is the angle of elevation of the sun at that time?
*July 31, 2012*

**Math**

John takes 2 hours longer than Andrew to peel 400 pounds of apples. If together they can peel 400 pounds of apples in 7 hours, then how long would it take Andrew to peal the apples working alone? Please round your answer to three decimal places.
*July 24, 2012*

**math**

Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 6-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? (Please round your answer to one decimal place.)
*July 24, 2012*

**Math**

Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)
*July 24, 2012*

**Math**

6/(a^(2)+a-6) = 4/(a^(2)-9)
*July 24, 2012*

**Math**

12/x + 3/(x-3) = x/(x-3) - 1/11
*July 24, 2012*

**Math**

(b+27)/(b^(2)-1) - 1/(b+1) = (b-2)/(b-1)
*July 24, 2012*

**Math**

5x/(x-4) = x + 20/(x-4)
*July 24, 2012*

**math**

1/9 - (k+3)/(72K) = 1/(9k) - (k-1)/(8k)
*July 24, 2012*

**Statistics**

A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 24 helmets contained such defects. a. Does this finding support the researcher’s claim? Used a ...
*July 19, 2012*

**Chem**

How long must a current of 1.20 A pass through a sulfuric acid solution in order to produce 25.0 mL of H2 gs at 25 degrees C and 1 atm pressure?
*July 18, 2012*

**Statistics**

Measurements on the percentage of enrichment of 12 fuel rods used in a nuclear reactor were reported as follows; 3.11 2.88 3.08 3.01 2.84 2.86 3.04 3.09 3.08 2.89 3.12 2.98 a. Test the Hypothesis H0: µ = 2.95 versus H1: µ 0 ≠ 2.95, and draw appropriate ...
*July 18, 2012*

**statistics**

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77, 67, 66. What are the inner fences?
*June 28, 2012*

**statistics**

4-(2.33)(√.25)=2.835 ounces
*June 28, 2012*

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