Thursday

April 24, 2014

April 24, 2014

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 Î¼C, x1 = 3.08 cm, y1 = 0.793 cm and q2 = -3.14 Î¼C, 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...