Wednesday
April 16, 2014

Posts by antonio


Total # Posts: 105

math
Using the information you calculated in the question above, consider the following. The Furniture Gallery is offering a 15% discount on plastic chair mats with the purchase of either chair. You have chosen a mat with an original price of $29.00. You also decide to purchase a t...

hvac
what is the difference between fall-prevention and fall-arresting equipment?

math
Alexis bought a cd player. She does not remember the price, but she does know that 6% sales tax came to $4.80. What was the price of the cd player?

algebra
2-9d+h

math
If you purchase an item for $1,242 at an interest rate of 9.8%, and you finance it for 1 year, how much is the amount of add-on interest? (Round your answer to the nearest dollar.)

Phyics
The leader of a bicycle race is traveling with a constant velocity of +11.9 m/s and is 10.7 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.30 m/s and an acceleration of +1.20 m/s2. How much time elapses before he catches the leader?

Math
There are 12 peaches in a carton. The mean mass is 175 grams. What is the total mass?

Chemistry 2
A titration is performed by adding 0.124 M KOH to 40 mL of 0.159 M HNO3. a) Calculate the pH before addition of any KOH. b) Calculate the pH after the addition of 10.26, 25.65 and 50.29 mL of the base.(Show your work in detail for one of the volumes.) c) Calculate the volume o...

CHEMISTRY
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry (balloon)
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
hi, I'm one of the 3.091x community TA: touuble student stop trying to cheat, it's quite silly

chemistry
hi, I0m one of the community TA for 3.091x. Lena stop trying to cheat, it's quite silly.

chemistry
hi, I'm one of the community TA for 3.091x. Please stop cheating, it's quite silly.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

Chemistry
The reaction you show is for two moles benzene. Since the molar mass is 78.11 g/mole, then 2 moles is 2 x 79.11 = 156.22 grams. Thus 156.22 g benzene will produce 6278 kJ of heat. You want to produce 1500 kJ. Use proportions to determine the mass of benzene needed, then use de...

Physics
Net force= Tension + normal force + weigh I used net force= ma. I got Normal force= ma + mgCos(angle) Normal force to be 505N. Tension= ma + mgSin(angle) = 396 Is this correct? or is the Net force = o.

Physics
A crate, which has a mass of m= 45 kg, is being accelerated at 3.2m/s^-2 up an frictionless inclined plane, which meets the horizontal at an angle of 35 degrees, by a rope. What is the magnitude of the normal force acting on the crate? What is the tension acting in the rope?

Algebra
The yearly production of a 5 foot orange tree is 34 pounds of oranges. A 14 foot tree produces 86 pounds of oranges. Let h represent the height of an orange tree and p the number of pounds of oranges produced. List the ordered pairs.

algebra
How do you graph y=4^x

physics
A 60kg wood carving of a gazelle slides under the action of the force shown. What is the normal force? assumin the gazelle starts from rest, how long will it take to move 3 meters?

physics
please help :/ Three charges are fixed to an xy coordinate system. A charge of +25C is on the y axis at y = +2.7 m. A charge of -16C is at the origin. Lastly, a charge of +66C is on the x axis at x = +2.7 m. Determine (a) the magnitude and (b) direction of the net electrostati...

physics
Help! Two charges are placed on the x axis. One of the charges (q1 = +8.71C) is at x1 = +3.00 cm and the other (q2 = -28.6C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x = +6.00 cm.

physics
trying to study but stuck on this problem. Two particles, with identical positive charges and a separation of 2.34 x 10-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration a1 whose magnitude is 6.75 x 103 m/s2, while particle 2 has an acc...

arithmetic
jane says that 546 can be represented by 53 tens and 16 ones. Is she correct? Elain

math
explain how a ruler is different from a straight edge

Calculus
consider the curved cylinder surface whose center line is the x axis and is between the planes x=0 and x=5.the radius is 4. Find the flux of <1,y,0> through it

Calculus
find the flux of F=<0,y,z> across the parabolic sheet given by x=2y^2+2z^2+3, with x <= 5

Public Health
what do you think are the most important new or expanded roles for environmental or occupational health workers in the 21st century?

Math Probability
19/39

Math Probability
At a political rally there are 20 republicians 13 democrates 6 independents. if a person is chosen at random what is the probability that the person is either a democrate or and independent?

Math Probability
a bag of hershey miniatures candies contain 18 milk chocolates, 9 Mr.good bars, 9 krackel bars and 8 hershey dark chocolate. if a candy is chosen at random, find the probability that it is A) A krackel or a Dark chocolate B)Not a milk Chocolate bar?

Math Probability
If the probability that event A will happen is 1/4 and the probability of A not happening is 3/4, find the probability that event A happens 3 times out of 7 experiments

Chemistry
thanks, the answer worked it was 2.4

Chemistry
Fe(s) + H2O(g)<-> FeO(s) + H2(g) Calculate K for the above reaction, using the information which follows. H2O(g) + CO(g)<-> H2(g) + CO2(g) K = 1.6 FeO(s) + CO(g)<-> Fe(s) + CO2(g) K = 0.67

chemistry
nevermind, i got the correct answer of 279

chemistry
i did that, but it was wrong, can you show me the correct formula to use

chemistry
An equilibrium mixture of SO2, O2, and SO3 at 1000 K contains the gases at the following concentrations: [SO2] = 3.77 10-3 mol/L, [O2] = 4.30 10-3 mol/L, and [SO3] = 4.13 10-3 mol/L. Calculate the equilibrium constant, K, for the following reaction. 2 SO2(g) + O2(g) 2 SO3(g)

Math
How long did it take the trip if Jay drove 340 kilometers at the average rate of 68 kilometers per hour?

math
Ariel used the number 1,111 five times and got the number1,111. Explain how Ariel might have done this?

Physics electromagnetism
four equal point charges are at the corners of a square. where besides infinity and at the center of the square is the strengh field zero?

physics
The charges and coordinates of two charged particles held fixed in an xy plane are q1 = 2.32 μC, x1 = 3.08 cm, y1 = 0.793 cm and q2 = -3.14 μC, x2 = -1.75 cm, y2 = 1.05 cm. At what (a)x and (b)y coordinates should a third particle of charge q3 = 5.7...

geometry
You eat a new kind of fruit and suffer from hives for the first time in your life. A week later, you try the fruit and the hives recur. A month later, you have a similar experience. Conclusion:

chemistry
A scientist collects a sample of carbon dioxide that contains 1.5 x 1025 molecules of CO2. In grams, what is the mass of the sample?

gca
How can I find a Formula to figure out the difference in the distance of the in side and outside of a dog racing track?

math
you have 25 acres and in every acre theres 10 beds. if my ratio is 6 females to 2 males. how many females and males do i have in the whole 25 acres?

math
you ate 1/4 of a pizza. your sister ate 1/6 of the pizza. how much of the pizza is left?

programming
array 8 dice program gpa

business
As the new finacial controller of a meduim-sized manufacturing company, you quickly need to assess the company's finanical position. Explain the process you would work through and the documents you would review. also state which of you new colleagues you would speak with a...

math
what is the probability of rolling a 2 when a fair number cube is rolled?

math
what are the results if you rolled a fair number cube 6000 times?

Math
What is the probability of rolling a number less than 4 when a fair number cube is rolled?

math
the length of a rectangle is 6 ffet more than twice the width. if the length is 24 feet, what is the width

Physics
A 4.8-m-tall, 30-cm-diameter concrete column supports a 5.0×105 kg load. By how much is the column compressed?

SCIENCE
NUMBER OF CHAMBERS IN THE HUMAN HEART?

SCIENCE
WHAT IS THE WEIGHT OF THE HUMAN BRAIN IN GRAMS?

Physics
i dont know

college
A spaceship lands on the planet whose radius is 5 times that of planet earth and whose mass is 25 times that of planet earth. Find the apparent weight of the astronaut on the second planet if the astronaut weighs 150lbs on planet earth

Sally delivered 148 newspapers and received $0.03 per paper. What were her earnings?
Sally delivered 148 newspapers and received $0.03 per paper. What were her earnings?

Physics
A particle leaves the origin with an initial velocity = (6.91 ) m/s and a constant acceleration = ( - 2.38 - 2.79 ) m/s2. When the particle reaches its maximum x coordinate, what are (a) its velocity, (b) its position vector?

Physics
a ball is thrown up onto a roof, landing 4.70 s later at height h = 24.0 m above the release level. The ball's path just before landing is angled at  = 62.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the motion, as ...

Physics
a baseball is hit at a height h = 1.10 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.2 s after it is hit and then down past the top of the wall 3.2 s later, at distance D = 53 m farther along the wall. (a) What horizont...

Physics
A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 49 m in front of goalposts whose horizontal bar is 3.44 m above the ground?

Physics
Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water. Although the insect is at distance d from the fish along a straight-line path at angle $ (as in the figure here), a drop must be launched at a diff...

physics
A boy whirls a stone in a horizontal circle of radius 1.3 m and at height 2.0 m above level ground. The string breaks, and the stone flies off horizontally and strikes the ground after traveling a horizontal distance of 9.8 m. What is the magnitude of the centripetal accelerat...

Physics
A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is (3.00 m/s) + (2.70 m/s) , measured on a horizontal xy coordinate system. At t2 = 5.90 s, its velocity is (-3.00 m/s) + (-2.70) . What are (a) the magnitude of the ...

physics
An object is shot from the back of a railroad flatcar moving at 40 km/h on a straight horizontal road. The launcher is aimed upward, perpendicular to the bed of the flatcar. The object falls: a) in front of the flatcar b) behind the flatcar c) on the truck d) either behind or ...

physics
A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 7.85 m higher than A, with speed v/2. Calculate (a) the speed v and (b) the maximum height reached by the stone above point B.

Physics 4a
A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 7.85 m higher than A, with speed v. Calculate (a) the speed v and (b) the maximum height reached by the stone above point B.

economics
Terrorist attacks foster instability and may affect productivity over the short and long term. Do you think the September 11, 2001, terrorist attacks on the World Trade Center and the Pentagon affected short- and/or long-term productivity in the United States? Explain your res...

algebra
the mass of a neutron is 1.67(10^(-27))kg. what is the mass of 7.03(10^(21))neutrons?

race and ethnicity
What does Traits means.

Math
Sarah's mom made cookies for Sarah and her four friends. There's one cookie too many to divide evenly among the friends. Then two more friends showed up. Sarah gave her mom one cookie, which allowed Sarah to divide all the cookies evenly. How many cookies did Sarah'...

chemistry
yo it is (-m/b)^(1/2) i just did it and submitted.

8th Grade Social Studies
where did the founders get these ideas

Pre-Algebra
what does the whole thing say?

6th grade
ON SCIENCE WHAT IS THE WORD ON WICH THE SECOND LETTER IS AN E THE THIRD LETTER IS A P AN THE FITH LETTER IS AN O, THIS IS A 14 LETTERS WORD

MATH ELE.
it is hrrde

6th grade
What are Physical and Chemical properties?

Math
One grandfather ,one father and one son. There are only three people.6x3=18

Math Algebra 1
For most people, buying a house is a great investment that can offer security in an uncertain world, but buying a house is also a commitment. Application Practice Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save t...

Science 8th grade please check (revised answer
true

science
I'm in 5th grade they don't let us take home the books - If in Charles's law when temperature of a gas increases if you keep pressure constant then what happens?

science
What is Boyle's and char?les's Law

English
Match a sentence from Group A with one from group B.I want to be sure there all correct, thanks. Group A 1.At O C water freezes. 2.I've been to several countries. 3.I've been working here for 10 years. 4.She was walking down the road. 5.He'll be working late for th...

English
I need to match a sentence from group A with one from group B that is in the same tense. Group A. 1.I've been to several countries. 2.I've been working here for 10 years. 3.She was walking down the road. Group B. A.They were reading all afternoon. B.Has he been drinkin...

English
I think it's 2C,3B, 4A, 5E

English
Need some help. need to match sentence from group A with one from group B, that are the same tense,past,present or future Group A 1. At Oc water freezes 2. I've been to several countries 3. I've been working here for 10 years 4. She was walking down the road 5. He'...

Guadalete/lengua
Escribe en tu cuaderno lo que ha hecho el cartero por la mañana. utiliza formas verbales de pasado con h. Que'quiere conocer acerca de este' ?

My Retyped Algebra Post
1. Use the arithmetic sequence of numbers 2,4,6,8,10.. to find the following: a)What is d, the difference between any consecutive terms? Answer: Show work in this space: b)Using the formula for the nth term of an arithmetic sequence, what is 101st term? Answer: Show work in th...

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