Monday

September 1, 2014

September 1, 2014

Total # Posts: 1,214

**Math**

Your bank account balance is -20.85. you deposit $15.50. What is your new balance?
*October 5, 2011*

**Stoichiometry**

Dr.Bob222 is right. Rodney, your answer is wrong. I just did this problem online and the correct answers were the one that Dr.Bob22 gave.
*October 4, 2011*

**physics**

Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
*October 3, 2011*

**science**

Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
*October 3, 2011*

**College Chemistry**

I am assuming its a liquid. My question is writing the chemical equation. What is the chemical equation? Is it C6H6 + O2 ---> CO2 + H2O? And if so how do I balance it?
*September 25, 2011*

**College Chemistry**

I am going to assume it is a liquid
*September 25, 2011*

**College Chemistry**

One liter of benzene (C6H6) is completely burned (oxidized) with air. Write a balanced chemical equation to represent this reaction.
*September 25, 2011*

**Math**

Can anyone answer: "R is the set with even natural numbers that are less than 2" in roster and set builder form
*September 25, 2011*

**Math**

Is 0 an even natural number?
*September 25, 2011*

**economics **

A profit-maximizing firm in a competitive market is currently producing 100 units of output. It has average revenue so $10, average total cost of $8 and fixed cost of $200. a. what is the profit? b. what is the marginal cost? c. what is its average variable cost? d. is the ...
*September 20, 2011*

**accounting **

6. Acme Manufacturing Company estimates factory overhead as a percentage of machine hours. On 1.1.11, Acme estimates total factory overhead of $400,000 for the year, and estimates 20,000 machine hours will be required during the year. During the year, 10,000 units of product ...
*September 20, 2011*

**accounting**

Bubba Production Company produces a homogenous product. All materials are added at the beginning of production and other product costs are added evenly over time until the product is complete. Conversion costs were 70% complete with respect to the 2,000 units in process July 1...
*September 20, 2011*

**Science**

Analyzing Ideas- Why would you weight less on a high mountain than you would at sea level?
*September 19, 2011*

**Math**

What percent of 1.5 is 3?
*September 14, 2011*

**Spanish**

Also, you would put ¨me gustan los deportes¨, for the same reason (I like sports, not). Te Gustan is ¨do you like sports¨
*September 8, 2011*

**Spanish**

¨Cómo te llamas¨ directly translates to ¨what do you call yourself?¨ Me llamo is correct because it means ¨I call (llamo) myself (me) Isabel¨. Te llamas Isabel is ¨you call yourself Isabel¨, while Me llamas Isabel means ¨you call me ...
*September 8, 2011*

**Subjects **

Will i get a lot of homework in middle skoo ????? here r my classes Math F.A.C.S. Art Sci English Content Support 7c Gym Social Studies also if i did what to do ???? need tips ???? plzzz answer
*September 5, 2011*

**Subjects **

What's Content Support 7c ???? it says it in my schedule i'm going into the 7th grade this week plzzz answer also wat do u do ????? plzz answer plzzz i kno it's a helping class but do you learn the same thing in ur regular class ????? plzzz answer
*September 5, 2011*

**math **

TRUE OR FALSE (x+y)+2=2+(x+y) is it associative property? (2*3)*5=(3*2)*5 is it commutative property? (X+3)4=4X+12 is an example of the distributive property of multiplication over addition (10+y)+z= 10 +(y+z) is this associative property?
*August 29, 2011*

**math **

-8/3*2=
*August 29, 2011*

**math**

Can anyone give me some pointers on how to plot the graph in excel please
*August 25, 2011*

**math**

Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the symmetry of the graphs of sin, cos and tan, to find the exact values of sin -pi/6, cos 5/3pi and tan 4pi/3. I have found the answers to the first three using the special tables sin pi/6 = cos pi/3 = 1/2 cos...
*August 25, 2011*

**math**

what symbols
*August 24, 2011*

**math**

Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the symmetry of the graphs of sin, cos and tan, to find the exact values of si -pi/6, cos 5/3pi and tan 4pi/3. I have found the answers to the first three using the special tables sin(ƒÎ/6) = cos(&#...
*August 24, 2011*

**math**

its okay I have it 1.596322539
*August 24, 2011*

**math**

4^(3-x)=7 showing all steps
*August 24, 2011*

**math**

use exact values of the sin,cos and tan of (pi/3) and (pi/6)(which I have found)and the symmetry of the graphs of sin,cos and tan to find the exact values of sin(-pi/6), cos(5pi/3) and tan (4pi/3). I know that sin -(pi/6) = -1/2 and cos (5pi/30 = 1/2 and tan 4pi/3 = root 3. ...
*August 24, 2011*

**Matg**

Write 7hb as a phrase.
*August 24, 2011*

**Math**

Write a phrase for each expression 7hb
*August 23, 2011*

**math**

use exact values of the sin,cos and tan of (pi/3) and (pi/6)(which I have found)and the symmetry of the graphs of sin,cos and tan to find the exact values of sin(-pi/6), cos(5pi/3) and tan (4pi/3). I know that sin -(pi/6) = -1/2 and cos (5pi/30 = 1/2 and tan 4pi/3 = root 3 but...
*August 23, 2011*

**math**

solve 4^(3-x)=7 to 3 s.f. showing all workings. I have got as far as -x =log(7)-3log4/log(4)
*August 23, 2011*

**maths**

in triangle abc, the point y divides the side ab in the ratio 2:1. The point z on ac is such that yz is parallel to bc. choose two options that are the same as the ratio bc:yz a)1:1.5 b)1:2 c) 1:3 d)1.5:1 e)2:1 f)2:3 g) 3:1 h)3:2
*August 23, 2011*

**calculus**

Tony has a rectangular piece of cardboard which is 60 cm by 40 cm. By cutting squares from each corner of the cardboard and turning up the sides, can he form an open-topped box which will hold (a) 6656 cubic centimeter? (b) 9000 cubic centimeters? (c) what is the maximum ...
*July 30, 2011*

**Physics**

Hot air balloons float in the air because of the difference in density between cold and hot air. In this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. To do this, use the following variables and make these ...
*July 13, 2011*

**statistics**

If someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation = 15, then that person’s numerical score would be…?
*July 10, 2011*

**math**

is it 1
*July 9, 2011*

**math**

which of the following expressions shows the equation to use in finding the dimensions of cube n by n by n by n with a volume of 125? 1. n to the third power =125 2. n to the second power= 125 3. 3n=125 4.n=125/3
*July 9, 2011*

**math**

oh your right okay so then its 135
*July 9, 2011*

**Physics**

A 50-story building is being planned. It is to be 200.0 high with a base 48.0 by 66.0 . Its total mass will be about 2.5×107 , and its weight therefore about 2.5×108 . Suppose a 200 wind exerts a force of 860 over the 66.0 wide face . Part A Calculate the magnitude...
*June 29, 2011*

**Geometry**

John places a mirror on the ground between himself and an apartment building. He then stands so that he can see the top edge of the building in the center of the mirror. The center of the mirror is 6.10 meters from her feet and 18.30 meters from the building. John’s eyes ...
*June 27, 2011*

**bus stats**

Given the following information about a hypothesis test of the difference between two means based on independent random samples, what is the standard deviation of the difference between the two means? Assume that the samples are obtained from normally distributed populations ...
*June 23, 2011*

**business stats**

Given the following information about a hypothesis test of the difference between two means based on independent random samples, which one of the following is the correct rejection region at a significance level of .05? Assume that the samples are obtained from normally ...
*June 23, 2011*

**mba stats class, help!!**

true or false. In an experiment involving matched pairs, a sample of 14 pairs of observations is collected. The degree of freedom for the t statistic is 12
*June 23, 2011*

**Chemistry**

Whoops forgot that part of the question: A closed flask originally contains 1.7 mol/L SO2 and O2.
*June 15, 2011*

**Chemistry**

The oxidation of sulfur dioxide to sulfur trioxide is an important reaction. At 1000K, the value of Kc is 3.6 x 10^-3. What is [SO3] at equilibrium when the reaction vessel is maintained at 1000K.
*June 15, 2011*

**mba stats class, help!!**

a door to door sales person for a household appliance has learned from her past experience that out of 10 demonstrations of her appliaance only 4 result in actual sales. This week she needs to make at least 5 sales. At least how many demonstrations does she need to perform to ...
*June 15, 2011*

**nba stats help!!**

The weight of a product is normally distributed with a standard deviation of .8 ounces. What should the average weight be if the production manager wants no more than 1% of the products to weigh more than 7.3 ounces?
*June 15, 2011*

**mba stats class, help!!**

A salesperson goes door-to-door in a residential area to demonstrate the use of a new Household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30. To perform ...
*June 15, 2011*

**stats **

A salesperson goes door-to-door in a residential area to demonstrate the use of a new Household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30. To perform ...
*June 14, 2011*

**stats**

The weight of a product is normally distributed with a standard deviation of .8 ounces. What should the average weight be if the production manager wants no more than 1% of the products to weigh more than 7.3 ounces?
*June 14, 2011*

**stats**

a door to door sales person for a household appliance has learned from her past experience that out of 10 demonstrations of her appliaance only 4 result in actual sales. This week she needs to make at least 5 sales. At least how many demonstrations does she need to perform to ...
*June 14, 2011*

**stats**

a door to door sales person for a household appliance has learned from her past experience that out of 10 demonstrations of her appliaance only 4 result in actual sales. This week she needs to make at least 5 sales. At least how many demonstrations does she need to perform to ...
*June 14, 2011*

**stats**

a door to door sales person for a household appliance has learned from her past experience that out of 10 demonstrations of her appliaance only 4 result in actual sales. This week she needs to make at least 5 sales. At least how many demonstrations does she need to perform to ...
*June 14, 2011*

**Chemistryy.**

Some mole problems! Which quantity of neon may be represented by the symbol Ne? A) 1 gram B) 4 liters C) 6 x 1023 atoms D) 2 moles A sample of nitrogen containing 1.5 x 1023 molecules has the same number of molecules as a sample containing A) 1.0 mole of H2 B) 0.25 mole of O2 ...
*June 6, 2011*

**physics**

the 2lb box slides on the smooth curved ramp. if the box has a velocity of 30ft/s at A, determine the velocity of the box and the normal force acting on the ramp when the box is located at B and C. assume the radius of curvature of the path is still 5 ft.
*June 1, 2011*

**physics**

the 2lb box slides on the smooth curved ramp. if the box has a velocity of 30ft/s at A, determine the velocity of the box and the normal force acting on the ramp when the box is located at B and C. assume the radius of curvature of the path is still 5 ft.
*June 1, 2011*

**physics **

the 3 lb block A rests on a surface for which the coefficient of kinetic is Mk=.30 determine the distance the 8-lb cylinder B must descend so that A has a speed of Va = 5ft/s starting from rest.
*June 1, 2011*

**physics**

a toy spring gun is used to shoot 28-g bullets vertically upward. the un deformed length is 150 mm, it is compressed to a length of 25 mm when the gun is ready to be shoot and expands to a length of 75mm as the bullet leaves the gun. a force of 45 N is required to maintain the...
*June 1, 2011*

**physics**

Does the resonance position change as the length of the tube changes, for example a longer tube?
*May 8, 2011*

**pre- algebra**

Tell weather a triangle with side lengths of 10,24,26 could be 45 45 90 degrees or 30 60 90 degrees. Explain.
*May 8, 2011*

**maths (mensuration)**

The area of an equilatoral triangle ABC is 50cm^2 . Find AB.
*May 4, 2011*

**maths**

Q1) Find area of the triangle ABC where AB=c, AC=b and BC=a. When a=b=c=12m
*May 4, 2011*

**Algebra**

How much 20% and 40% copper alloy should be mixed to yield 500 kilograms of 25% copper alloy
*April 29, 2011*

**Business**

How will demand and supply trends in the high-definition industry affect the price for HDNet’s programming?
*April 28, 2011*

**comm**

Read the summary paragraph on the bottom of p. 37. Identify the author’s goal in writing the paragraph. How effectively do you think the author met that goal? The paragraph is below. Hockenbury and Hockenbury tell us that daily hassles often cause more stress than major ...
*April 27, 2011*

**Math**

-4^2+(2)(-4)= 16+-8= 8
*April 27, 2011*

**Biology**

A population of animals has a dominant allele for dark-colored fur and a recessive allele for light-colored fur. If the population of animals is 100 and 12 members of the population have the light-colored fur, about what percentage of the population is heterozygous? What ...
*April 27, 2011*

**math**

Wht do u get if a bunch of bad guys fall in the ocean
*April 25, 2011*

**spanish**

Make the following word agree in spanish: Un ,abuelos ,amables and traslate them
*March 30, 2011*

**Chemistry**

At 35 degrees Celcius, K = 1.6x10^-5 for the reaction: 2NOCl<--> 2NO + Cl2 If 2.0mol NOCl and 1.0mol Cl2 are placed into a 1.0-L flask, calculate the equilibrium concentrations of all species. Answer: [NOCl] = 2.0M [NO] = 8.0x10^-3 [Cl2] = 1.0M --------- What I did: ...
*March 30, 2011*

**Chemistry**

Great, my answer was correct. But, why did you divide the moles of limiting reactant by 4?
*March 28, 2011*

**Chemistry**

Suppose that 0.650 mol of methane, CH4(g), is reacted with 0.800 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released? Substance & Enthalpy of Form. (kJ/mol) C(g) 718.4 CF4(g) -679....
*March 28, 2011*

**english**

how does the first ten mins of the film remember the titans capture the audiences attention?
*March 23, 2011*

**APUSH**

I need help understanding this FRQ prompt: Analyze the circumstances around the decision to ultimately relocate persons of Japanese ancestry. The "analyze the circumstances" part really confuses me! Thank you!
*March 22, 2011*

**Tx History**

The Mexican War What are the unites states 4 reasons for war? I know one of the reasons is that Mexico refused to pay the united states citizens for damage claims from the Texas revolution.
*March 21, 2011*

**Chem**

What is the percent by mass of a solution if 45 grams of acetic acid is added to 90 g of H2O? Thanks.
*March 20, 2011*

**Math**

7/11 as a percent
*March 20, 2011*

**algebra**

how do i work this problem step by step 12.5=.8x
*March 18, 2011*

**science**

what material reflects the least amount of sunlight ?
*March 17, 2011*

** chemistry**

How many atoms are contained in 8.8 g of CO2?
*March 15, 2011*

**Math**

Okay, thanks! :)
*March 13, 2011*

**Math**

The circular rug is placed on a square floor. The rug touches all four walls. How much of the floor space is not covered by the rug? The square floor is 14 feet for length and width.
*March 13, 2011*

**Chemistry**

Can Fe2+ and Mn2+ be separated by precipitating FeS(s) and not MnS(s)? Assume [Fe2+]=[Mn2+]=[H2S]=0.10 M. Choose a [H3O+] that ensures maximum precipitation of FeS(s) but not MnS(s). Will the separation be complete? For FeS, Kspa = 6x10^2 ; for MnS, Kspa = 3x10^7
*March 9, 2011*

**Geometry - Math**

A picture measures 20 cm x 25 cm. The width of the matting and frame at the top and bottom is 5cm. What should be the dimensions of the frame so that the framed picture is similar to the picture alone
*March 5, 2011*

**History**

Yes, there are many world and phrases that I have never heard of.
*March 5, 2011*

**History**

How did India experience that arrival of the British, in light of the past? How did India experience the British domination? How did India emerged out of British domination in the 20th century as an independent nation?
*March 5, 2011*

**Chemistry**

A water sample saturated in CaF2 has Ca2+ of 115 ppm (115g Ca2+ per 10^6g water sample). What is the F- ion content of the water in ppm?
*March 5, 2011*

**History**

When the British arrived to India
*March 4, 2011*

**History**

How did India experience that arrival of the west, in light of the past? How did India experience the western domination? How did India emerged out of western domination in the 20th century as an independent nation?
*March 4, 2011*

**chemistry**

What do you expect when you mix 1M Na2SO4 with 1M CaCl2?
*March 1, 2011*

**Chemistry**

Thank you so much!
*February 28, 2011*

**Chemistry**

And it's 0.20M
*February 28, 2011*

**Chemistry**

Adding 20mL sodium acetate, sorry.
*February 28, 2011*

**Chemistry**

How do I find the volume of 6M stock solution of acetic acid needed to make a 250 mL buffer at a pH 4.7? pka is 4.74
*February 28, 2011*

**Business Communications**

A. Good communicators advance more quickly in the company. B. It is true that good communicators advance more rapidly in the company. C. There is evidence that has shown that good communicators advance more rapidly in the company. D. It is the case that good communicators ...
*February 26, 2011*

**Business Communications**

A job application letter is effective in convincing the reader that an applicant is knowledgeable of the company by?
*February 26, 2011*

**Business Communitions**

"Investors And their wives" is considered sexist because?
*February 26, 2011*

**geometry**

a cube is placed inside a right circular cylinder. How may cubic feet of water will file the cylinder that has the cube in it? The sides of the cube are 24. The radius of the cylinder in 12 square root of 2 thanks you
*February 23, 2011*

**Chemistry-Practical Applications**

What are some practical applications of London dispersion forces? And the rule like dissolves like besides making antichap lipstick? Thank you!
*February 18, 2011*

**biochem**

If I am given a solid chemical form of both the acid and the base, how do I determine how many grams of each I need to make 1L of a 25mM Tris-HCl buffer with acid concentration of 18.94mM, and base concentration of 6.06mM?
*February 17, 2011*

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