Sunday
April 20, 2014

Posts by Verónica


Total # Posts: 289

physics
a rod is having a positive charge and a point charge is placed at a distance 'd' from it making angle 45 degree with one end and 37 degree with the other.calculate field. plz answer its urgent.

chemistry
How many grams of magnesium are required to produce a total of 4.05g of hydrogen

Physics
Prove that tanø is equal to U(k) when the block slides down the incline with a constant speed. (Use symbols, not numbers.)

science
foxes eating mice or leaves growing on trees or rabbits easting clover or fleas living on cat

science
a consumer-producer relationship is best illustrated

scince
as you drive down the highway you may see crows feeding on dead animals. as a result of this nutritional pattern,crows may be classified as

chemistry
solve net ionic equATION Ba(OH)2 + Na2SO4

Math
A swing has a maximum height of 2 m and a minimum height of 0.5 m and it takes 3 seconds to get from the maximum height to the minimum height. Approximate the instantaneous rate of change 1 second into the fall using the difference quotient when h is 0.01. a)-1.3650 b)-0.1973 ...

math 5th grade
59425

math 5th grade
59425

chemistry
How would you prepare 500mL of 6.0M NaOH solution using solid NaOH pallets?

Informal logic
Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater. The reasoning above is flawed because the evidence does not suggest that Catherine goes to ...

Informal logic
All sages provide both wisdom and inspiration. Since Dasha’s speech contained wisdom and greatly inspired her audience, Dasha is a sage. Which one of the following points out the flaw in the argument above? (Points : 1) -Just because Dasha is a sage doesn’t mean that...

chemistry
to what volume should you dilute 0.100L of a 15M NaOH solution to obtain a 1.0M NaOH solution

physics
scientific interpretation of two toy cars having bar magnet on the roof .what happen when close to each other from same and different direction?

Math
Given the altitude of lakes in feet: –12, –9, –14, –39, –49, –49, –18, –43, find the mean, median, mode, and range

chemistry
A reaction produced 0.40 mmol of H in a buffered solution which contained 300ml of 0.06M succinate buffer, pH is 4. What was the pH of the medium after the reaction was completed? The pKa of succinate buffer is 4.21

chemistry
To what volume should 100ml of any weak acid (HA) with a concentration of 0.2M be diluted to double the percentage ionization?

Chemistry
The of hydroxylamine, , is . A buffer solution is prepared by mixing 120 of a 0.34 hydroxylamine solution with 60 of a 0.25 solution.Solve for the PH

Chemistry
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.030 M CH3CO2Na? Assume that the volume of the solutions are additive and that a = 1.8 × 10-5 for CH3CO2H.

trig
Find the first two terms a_1 =5 and an=3a _n-1+2

Chemistry
2Al(s)+3Cl2 = 2AlCl3 Limiting Reactant is Cl with 0.329mol. What is the maximum mass of aluminum chloride that can be formed when reacting 30.0g of aluminum with 35.0g of chlorine?

Chemistry
What is the maximum mass of aluminum chloride that can be formed when reacting 30.0g of aluminum with 35.0g of chlorine

statistics
Suppose a random sample of 80 measurements is selected from a population with a mean of 65 and a variance of 300. Select the pair that is the mean and standard error of x.

statistics
Suppose a random sample of 80 measurements is selected from a population with a mean of 65 and a variance of 300. Select the pair that is the mean and standard error of x.

math
133ft.

math
A 6ft man stands next to a 100ft. tall building. the man's shadow is 8ft. long. How long is the building's shadow?

math
how can i find four equivalent expressions example: 50+225

chemistry
Steve, in an attempt to impress his girlfriend, plops 18.2 grams of sodium metal into 500 mL of concentrated phosphoric acid (density = 1.88 g/cm3) in a beaker. The reactants were both initially at 25 oC. The reaction gently produced bubbles of hydrogen and Janet was not impre...

Chemis
Steve, in an attempt to impress his girlfriend, plops 18.2 grams of sodium metal into 500 mL of concentrated phosphoric acid (density = 1.88 g/cm3) in a beaker. The reactants were both initially at 25 oC. The reaction gently produced bubbles of hydrogen and Janet was not impre...

Chemistry
Strontium metal is responsible for the red color in fireworks. Fireworks manufacturers use strontium carbonate, which can be produced by combining strontium metal, graphite (C), and oxygen gas. The formation of one mole of SrCO3 releases 1.220 x 103 kJ of energy. a) Write a ba...

Chemistry
Compute the ƒ´Hrxn for the following: CH3OH „³ H2CO + H2 Carbon is the central atom on both the starting material and the product.

Chemistry
A hungry backpacker needs to boil 150 mL of water to prepare a cup of Ramen Noodles. The filtered river water is at a temperature of 14.2 oC. The pressure is 760 mm Hg and he wants to eat the chicken flavored noodles. How many mL of his liquid butane camping fuel will he use t...

math
A flagpole casts a 32-ft shadow. A boy who is 6 feet tall is standing near the flagpole casting a 16-ft shadow. They form similar triangles. How tall is the flagpole?

Chemistry
Objectives To determine the molecular weight of a volatile liquid. Discussion [This laboratory exercise was adapted from one in Beran and Brady's Laboratory Manual for General Chemistry , John Wiley & Sons, 1982] The Dumas Method for determining the molecular weight of a v...

Chemistry
A Balloon Time® tank holds 15% excess capacity to fill 50 helium balloons measuring 9” or 0.5 ft3 in volume at 1 atm and 22 oC. The gauge pressure of a new tank is 260 psi. What is the volume of a Balloon Time® tank in ft3?

math
limit (x-9)/(sqrt(x))-3 as x-->9

Chem
1.25 x 10^2

physics
An object is moving at constant velocity of 20m/s for 10 seconds. Find the acceleration during the 10 seconds interval?

12th Grade world history
I now know that the answer is A. Large companies tried to be paternalistic to keep workers from rebelling. Thank-you so much for the help! :)

12th Grade world history
With regards to the mining and agriculture industry, in the nineteenth century, which of the following statements is false? A. Large companies tried to be paternalistic to keep workers from rebelling B. Specialization became more common C. Private investment grew D. Reliance o...

geometry
solve for b A,squared + B,squared=c squared given a=3,c=5 help plz

health
a

Algebra
Paint Express charges $30 per gallon of paint plus $1.10 per square foot of wall space. Color Creations charges $24 per gallon of paint plus $1.20 per square foot of wall space. Robert estimates he will need four gallons of paint for the rooms he’d like painted. How much ...

Advanced Cost Managemement
Problem 1 - Aunt Ethel's Fancy Cookie Company manufactures and sells three flavors of cookies: macaroon, sugar, and buttercream. The batch size for the cookies is limited to 1,000 cookies based on the size of the ovens and cookie molds owned by the company. Based on budget...

Math
A farmer’s harvest in bushels varies directly with the number of acres planted. A. Express in sentence form what this means to the farmer. B.Translate the variation statement into the corresponding variation equation. C. If 8 acres can produce 144 bushels, find the consta...

Chemistry
100g of a saturated solution of sodium nitrate at 43°C is cooled quickly with stirring to 10°C. How many grams of the solute will crystallize?

GeOmEtRy!!!
Simplify the expression 5(x+2)- 3(2x-4).

math-factoring
how to factor when there is not a 1 as a coefficient.. for example 2x^2-x-5

math
write two situations that would use the numerical expression 27/9

math-matrix
thanks, wasn't too sure whether I could divide by -23 or not. Found the website, was really helpfull =)

math-matrix
solve using the gauss-jordan method. x-2y+4z=7 -x+3y-z=-1 2x+y=-2 *I get through the first two columbs, but can't get the third one to the one and zero.

GeOmEtRy!!!
The area of a rectangle is (6x^2)^2y^3 and the width is 9xy^2. What is the length of the rectangle?

GeOmEtRy!!!
How many x-intercepts does the graph of y=x^2-4x+4?

CHEMISTRY
1. SF6 2. P4S7 3. SiCl4 4. 5. IF5 6. N4S4 7. Sb2S3 8. Na2CO3 9. 10.

GeOmEtRy!!!
Which of the following expressions is equivalent to (4a^2b)^3(ab)^3? a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6

GeOmEtRy!!!
a triangle has an area of 35 square inches. The base of the triangle is 4 inches less than twice the height. What is the length of the base of the triangle?

GeOmEtRy!!!
THANKKK YOU!!!!

GeOmEtRy!!!
what are the solutions to the following equation 3x^2+5=80?

7th Grade Math
Hi pepole

algebra 1
The options are: 45t=55t+250 45t+55t=250 55t-45t=250 or 50t=250

algebra 1
If two car are traveling in opposite directions and have average speeds of 45 mph and 55 mph, what equation shows that the cars are 250 miles apart after t hours?

6th grade math
the percent of all adults who take photographs is greater than the percent who play word games but less than the percent who bake. what fraction of all adults might take photographs? Using this table Activity Percent Baking. 17 Barbecuing. 32 Playing chess. 4 Playing word game...

geometry
16 feet

GeOmEtRy!!!
What is the x-intercept of the linear function 6x-10y= -15?

math
explain in your own words the difference between how the Pythagorean Theorem is used and how the converse of the Pythagorean Theorem is used.

physics
driving on a hot day causes tire pressure to rise. what is the pressure inside an automobile tire at 288, if the tire has a pressure of 30 psi at 318k? Assume that the volume and amount of air in the tire remain constant

math
=3x+12-6x+6 =3x-6x+12+6 =18-3x =3(6-x)

Calculus
You are an engineer in charge of designing the dimensions of a box-like building. The base is rectangular in shape with width being twice as large as length. (Therefore so is the ceiling.) The volume is to be 1944000 m3. Local bylaws stipulate that the building must be no high...

Chemistry
will acidic foods cooked in a cast iron skillet become Fe+2 enriched because of a reaction beteen the acidic food and the skillet?

problem solving
random sampling for tensile strenght 6500 5800 6150 6050 5900 6150 6200 5880 6130 5880dtetermine % 6000psi 67000psi 68000psi

Korean
both are right but yours is better to use the other one isnt a very nice thing to say. im a korean

Physics
A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. The low-temperature reservoir is the outside environment at 16.5°C. Energy is exhausted to the low-temperature reservoir at a rate of 185 W. (c) How much steam will it cause to condense in ...

EXP 105 Personal Dimensions of Education
how will i go bout doing this

Math story problem
What is the order smallest to largest 8.00, 8.30, 0.800, .83

math
a gain of 8 dallors

6th grade math
Edwards because 0.2= 0.20 or 0.200 or 0.2000. It equals the same thing no matter how many zeros there are.

math
Thank you for your help Anonymus.

Math
I am very sorry but I was wrong with the problem. The math problem is: 9 / (3.6-2.1) Thank you Anonymus for your answer but I want the problem that I wrote above. If you help me again pleaseeeeeeeee. I don't know how to resolve this. Thanks again.

Math
How can I get the answer: 9 / 3.8 - 2.3 I don't know if I need to divided first or get the difference. Thank you for helping me.

Titration Experiment
Why is unnecessary to measure precisely 25 ml of unknown acid into the beaker?

accounting
190,000

Algebra 1
So I have this problem: Dave can vote. (18 or over.) Dave is 5 years older than Jim. Jim is not old enough to vote. Write a mathematical inequality expressing Dave's age. (Hint: determine Dave's maximum and minimum age.) So I have his minimum age as 18 and his maximum ...

geometry
ABCD is an isosceles trapezoid with a height of 4 inches and bases of 10 and 12 inches .What is the perimeter of this trapezoid in inches and feet . HINT:Only the bottom of the entire figure is 16 inches long, not the top

statistics
The sum of the measures of all angles in any 10-gon is how many degrees?

english
Sara came to Hyderabad Airport by flight. Then, she reached Begumpet by auto; where she is received by John and escorted her up to the Greenvalley Apartment. After some time, John guided her to the venue, 'The Arcans Restaurant', where the marriage function id being or...

Algebra
x^2+5x-36

Algebra
d=t2+7

Chemistry
Calcium carbonate, CaCO3(s), decomposes upon heating to give CaO(s) and CO2(g). A sample of CaCO3 is decomposed, and carbon dioxide is collected in a 250 mL flask. After decomposition is complete, the gas has a pressure of 1.3 atm at a temperature of 31℃. How many ...

CHEMISTRY
My question is that how can fe=fe(oh2)be balanced in a basic solution....THANKS IN ADVANCE.

algebra
a bag contains 4 red chips, 2 blue chips and 5 green chips. A chip is randomly removed from the bag, and then without replacing the first chip, a second chip is removed. What is the probability that both of the chips selected from the bag were blue?

algebra
4.4

algebra
an advertising company made 15 million in 2002 and 22 million in 2003. in a bar graph of this data, the bar for 2002 is 3 inches high. How high should the bar for 2003 be to represent the data proportionally?

Math - Please Help
Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6

Trigonometry
Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6

algebra 1
The perimeter of a triangle is 62 cm. If the second side is twice as long as the first side, and the third side is 12 cm longer than the second side, what is the length of the longest side of the triangle?

Algebra
(2 the square root of 3+1)(the square root of 3-4)

Intro to Psychology
I'm confused because a personality trait is a stable, enduring quality that a person shows in most situations.

Intro to Psychology
For each of the following descriptions, identify a possibLe underlying personality trait. 1) Jenny is described by her coworks as overly sensitive, critical, and impatient. Her family describes her as warm and supportive. 2) Matthew is describes by his coworkers as cold and in...

chemistry
what is the solubility of potassium nitrate (KNO3) in 100.0g of water at 80.0 degrees celcius?

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