Thursday
April 17, 2014

Posts by Mark


Total # Posts: 1,221

Chem
I am having problems with these two questions. 1.The value of the equilibrium constant (Kp) as represented by the first chemical equation is 1.58 x 102 at 727 °C. Calculate the value of the equilibrium constant (Kp) for the second equation at the same temperature. Express ...

computers
I have this problem with my PC The sound won't function properly. I've checked the volume controls and audio properties, etc, but they seem to be working fine. It's just that the sound won't come out. I've also tried installing a new set of speakers, yet th...

Chem
There are three questions in particular that I am having problems with. Here they are 1. A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard so...

French 1
Can you tell me how to say grandparents,granddaughter,and grandson in french thanks

9th grade science
Yes I'm taking about carbs, lipids, and protein could you tell me which three are oranic I have answers could you check them? My answer is eggs but I know there has to be more than that

math
thanks dude you rock

math
Im doing my homework and it provides barely any info. here is the question. Mr Harrison has a very large backyard. He contacted the Clover Pool Company to have a pool installed in the shape of a rectangle. The Clover Pool Company would build a pool that has a perimeter of 72 y...

math
it was accidentally sent dude -_-

math
Im doing my homework and it provides barely any info. here is the question.

math
Simplify: i^25 Sqrt-900 cuberoot-125x^6

Math
When seven times a number is added to the square of the number the result is 18. Find the number.

3rd grade Shurley english
How would you clasify Ouch! that bee sting hurts!

phy
A scaffold of mass 50 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 80 kg stands at a point 1.5 m from one end. (a) What is the tension in the cable closer to the painter? N (b) What is the tension in the cab...

English-PLEASE HELP!!!
PLEASE HELP!!!

English
The phrase, "The rogues ran rapidly around,” is a good example of 1.alliteration. 2.assonance. 3.onomatopoeia. 4.personification. I believe the answer is between alliteration and assonance.

math
x = (y - b)/m

math
b = (2A)/(xh)

math
yes. it passes the vertical line test AND the horizonal line test.

history
were there other times when the US used the atomic bomb, other than ww2?

history
was the US trying to intimidate the uSSR by displaying the power of the atom bomb? why? are there any supporting documents?

calculus
find dy/dx of sqrt(x+y)+sqrt(xy)=6

Social Studies (specifically American Goverment)
What could be some future challenges for freedom of religion in the 1st amendment?

calculus
at a given instant the legs of a right triangle are 5cm and 12 cm long. if the short leg is increasing at the rate of 1cm/sec and the long leg is decreasing at the rate of 2cm/sce, how fast is the area changing

Physics
What are some possible uses for gelled methanol and why was it never used as a fuel in transportation?

Chemistry
Calculate the work involved if a reaction with an enthalpy change of -2418 kJ is carried out in a vessel with a mobile, frictionless piston. Other details: the reaction is H2(g) + 1/2Oxygen2(g) yields H2O(g) with enthalpy change of -241.8 kJ/mol. The product is 180.16gH2O=10.0...

physics
Answer: 39.32746882 meters. How: KE = 1/2massxvelocity^2 = massxheightxaccelerationofGravity. Your velocity is 100km/h = 27.777..., so: 1/2(27.777...)^2 x mass = (385.8024691 m^2/s^2)xmass. (385.8024691m^2/s^2)m = mh(9.81m/s^2). Mass and all units except meters cancel when you...

Chemistry
Calculate the work involved if a reaction with an enthalpy change of -2418 kJ is carried out in a vessel with a mobile, frictionless piston. Other details: the reaction is H2(g) + 1/2Oxygen2(g) yields H2O(g) with enthalpy change of -241.8 kJ/mol. The product is 180.16gH2O=10.0...

physics
A Calorie with a capital C is 1 kilocalorie. 1c=4.184 J, so 1kc=4,184 J. 235 C X 4,184 J = 983,240 J. 1 W is 1 J/second. Divide 983,240 J by 74 J/s, to get 13287.02703 seconds. Divide that by 3600 seconds/hour to convert to hours. Answer in short: 13287.02703 s = 3.690840841 h...

8th Grade
your moms

math
In triangle ABC, line AB is congruent to line BC. If m angle A is 45, find m angle B.

math
In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.

chemistry
DATA Empty Evaporating dish and watch glass: 33.6g Evaporating dish, watch glass and NaHCO3: 35.08g Evaporating dish, watch glass and product: 34.65 NaHCO3(s) + HCL (aq) ----> NaCl(s) + H2O(L) + CO2(g) 1. Determine the mass if the sodium bicarbonate reacted? 2. Calculate th...

chemistry
My answers are 6 and 5 respectively. I'm confident that they're correct, but thanks for your time.

chemistry
Sorry, you're right. It is the lowest for the second.

chemistry
Atomic hydrogen produces well-known series of spectral lines in several regions of the electromagnetic spectrum. Each series fits the Rydberg equation with its own particular n sub 1 value. Calculate the value of n sub 1 (by trial and error if necessary) that would produce a s...

calculus
find the derivative of the function g(x) = (1 + 3x)^6(5 + x - x2)^8

social studies
Name Missouri's second largest city which also has French roots

Finite Math
Find the value(s) of the function, subject to the system of inequalities. Find the maximum and minimum of P = 10x - 16y subject to: 0 ¡Ü x ¡Ü 5, 0 ¡Ü y ¡Ü 8, 4x + 5y ¡Ü 30, and 4x + 3y ¡Ü 20 50, 0 -96, 0 -67.5, ...

g
doubling time is the time it takes for a country's population to double in number

g
Why is doubling time so low in African countries?

Books
I am writing a novel, i estimate i will finish pretty soon, within a year or two: I am an Amateur writer- how do i go about trying to publish this book?

math
Simplify. 10 lb 30 oz

Math
Complete the statement, using a metric unit of weight. A television weighs 30______.

math
Box A has 3 red marbles and2 yellow marbles. Box B has 2 red marbles and 1 yellow marble. If you have to pick a re marble to win a prize and you can not look in the box, which box would give you the best chance of winning the prize?

math
If you have a rectangle that is 8cm by 6cm and you cut it diagonally, what other 4 geometric shapes can you create

Physics
YOu are creating a transverse wave in a rope by shaking your hand from side to side. Without changing the distance that your hand moves, you begin to shake it slower and slower. What happens to the frequency? it decreases?? 2. For incomplete cancellation to occur, opposite pul...

english
a place where goods are manufactured is called a what?

math
Teresa has 4 flower pots in 4 different designs. She likes to display her flower pots in different positions on her window sill. How many different ways can she place her flower pots? Do you 4x4=16 4x3=12 4x2=8 4x1=4 and then 16+12+8+4

MATH
I don't think that answer is right. 60 minutes in a hour 72x60= 4320 an hour 24 hours in a day 4320x24=103680 a day 103680x30 days=3110400 a month Then go back and do 103680 a day x365 days a year=37843200 37843200 a year x 72 year=2724710400 Let me know what you think and...

calc
Let C be the curve which is the intersection of the half-cone S1 = {(x,y,z)|z=sqrt(x^2 + y^2} and the paraboloid S2 = {(x,y,z)|2z=3-x^2-y^2}. Find C. a)Make a 3-D sketch to show S1, S2, and C b) Show that at each point on C the normals to these two surfaces are perpendicular t...

Calculus-partial derivatives
Let Z = f(u,v) where u=xy^3 + e^3 and v = (x^2)y. Obtain expressions for Zx and Zy in terms of fu and fv. I don't understand the "in terms of" part. How do I do this question? thank you

calculus
Let C be the curve which is the intersection of the half-cone S1 = {(x,y,z)|z=sqrt(x^2 + y^2} and the paraboloid S2 = {(x,y,z)|2z=3-x^2-y^2}. Find C. a)Make a 3-D sketch to show S1, S2, and C b) Show that at each point on C the normals to these two surfaces are perpendicular t...

geography - weather and climate
i need to draw a labelled diagram and explain why depressions bring cloud and rain. do you know any good sites that would help me and explain it simply for me to understand. thanks!

math
Mr.Jackson is preparing bags of treats to give trick or treaters on Halloween. He has 48 pieces of candy and 60 pieces of gum.He uses all the candy and gum, and he puts the same ratio of candy to gum in each bag. What is the largest number of bags he could have made.

calculus
Consider a plane curve which is described in polar coordinates (r, @) by r = g(@) for @ for all [a,b] (@ representing theta). Starting from the known expression for the length of a plane curve in Cartesian coordinates and the equation x = rcos@, y = rsin@, obtain an integral e...

Calculus
Consider a plane curve which is described in polar coordinates (r, @) by r = g(@) for @ for all [a,b] (@ representing theta). Starting from the known expression for the length of a plane curve in Cartesian coordinates and the equation x = rcos@, y = rsin@, obtain an integral e...

calculus
Consider a plane curve which is described in polar coordinates (r, @) by r = g(@) for @ for all [a,b] (@ representing theta). Starting from the known expression for the length of a plane curve in Cartesian coordinates and the equation x = rcos@, y = rsin@, obtain an integral e...

calculus
wow thx a lot man

calculus
the path of a particle in the xy-plane is vector r = (cos2t, sint) for t for all [-pi/2, pi] where t represents time. Sketch the path. Is it a smooth curve? How do i sketch the path? do i just plug in random points between [-pi/2, pi]? how would i connect it together? and how ...

Calculus
the path of a particle in the xy-plane is vector r = (cos2t, sint) for t for all [-pi/2, pi] where t represents time. Sketch the path. Is it a smooth curve? How do i sketch the path? do i just plug in random points between [-pi/2, pi]? how would i connect it together? and how ...

calculus
A particle traces the path vector r = (t^3, t+3, t^2 -4t) where t represents time; it flies off on a tangent when t=1 and then moves in a straight line with constant speed. Find its position when t=4. Do I just plug the 4 into the t's in vector r?

physiology
a d d

college
Find limit X approaches 1 for ((5-X)^.5 -2)/((2-X)^.5 -1) e-mail address: mark.hultgren@ca.usda.gov Thank you.

HELP!
WHY ARE GAS PRICES RISING?

Calculus
a) Prove that |A|^2 = A•A for every vector A. (Note, the A's are vectors) b)Use this to show that if |F(t)| is constant for t for all (a,b), then F'(t)•F(t) = 0 for t for all (a,b). (Note the Fs are vectors)

Algebra Help
1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a) What int...

health
health concerns fron 1990 to 2010 for 9th grade heath class homework

Calculus I
This post was also placed at freemathhelp, on the calculus board with titled, "Calculus I". No work is shown at either location. Sad.

cultural diversity
Women are considered the social minority in the United States because they belong to this group, and are sometimes subject to prejudice and discrimination

Math
1.)Write the ratio of 20 to 18 in lowest terms 2.)Find the supplement of <A. m<A =72 degrees. 3.)Place the following numbers in ascending order. -2/5, 1/6, 7/8, -5/9, 3/4

Math
A=30?

accounting
a credit to the overhead account

Marketing
I am writting a marketing plan essay and need to describe sales support but I cannot find a clear definition to start from. Help?

Organization Behavior
Thank you

Organization Behavior
what is a customer base description?

Physics
A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration? A. 0.21 B. 0.46 C. 0.64 D. 0.78 E. 0.97 acceleration= change in velocity/change in time and the velocity= change in displacement /change in time Velocity=28...

Physics
Displacement is which of the following types of quantities? A. vector B. scalar C. magnitude D. dimensional My answer is A. vector...I just want to confirm this is the correct answer.

religion
consider the interrelatedness of everything in the cosmos as it is expressed in many indigenous religions. How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples?

climate graphs
i love u to

climate graphs
Hey Peoplz

SOCIAL STUDY
WHY SHOULD WE GO TO A FILED TRIP.

geometry
Find each side's area then add them up Do you know the formulas for the areas of a triangle and a rectangle?

Physics
I don't necessarily need an answer here... just a step in the right direction. If you drive into a wall at 5 m/sec, rebound at 1 m/sec, and make contact with the wall for .15 sec, with what force did the wall exert on the car? (mass = 220 kg) I can't really put my fing...

Algebra
Think about it this way: 3 < 6, so would -3 < -6? No, -3 > -6. No, it doesn't change because an equation by definition is not an inequality.

gen 105
How Do You Create A Table That Lays Out A Day-by-day Plan To Use As A Job Aid For Employment Search, Spanning 3 Weeks?

International business
What is the relevance of international strategy to businesspeople

chemistry
Describe the role of each of the following types of bonds in a polyamide: a) covalent bonds b) amide bonds c) hydrogen bonds

Math - Trig
Hi I have a Trig question that i dont understand, can someone please explain how to solve for it using cosine law?? A Clock with a radius of 15 cm has an 11 cm minute hand and a 7 cm hour hand. How far apart, to the nearest centimetre, are the tips of the hands at each time? a...

marketing
The answer is actually brick-and-mortar, not offline business

marketing
The answer is actually brick-and-mortar, not offline business

Vending Machines
How does Vending machine connect to our culture and customs?

Algebra
A carpenter drills 5 equally spaced holes in a 56 3/4" long piece of wood. The two end holes are an equal distance from the center. If each hole is 7 1/2 inches apart, what is the distance from each end of the wood to the nearest ens hole? Please explain Thanks, Mark

Algebra
Brett made muffins for his grandmother, but he gave his friend Steve 1/8 of the muffins. Then Brett saw Dori and gave her 1/3 of what he had left. Then he saw Shiela and gave her 1/7 of what he had left. By the time he arrived at his grandmothers house there were only 12 muffi...

algebra
The 2842-seat performing arts center has three sections-orchestra, mezzanine, and balcony. The mezzanine has one-sixth fewer seats than the orchestra. How many seats are in the balcony if the orchestra has 1,218 seats? Please show me how to set up the equation.... thanks

algebra
Im feeling like an old parent. Please help. Charles is one-third as old as his father. In six years, Charles will be three-sevenths as old as his father. If Charles is less than 18 years old, how old is Charles' father?

math
Factorise completely: 1)3g-3t+2mg-2mt 2)3x squared + 2x-8 3)3x squared-27

Science
I am trying to find examples of how the human body uses diffusion and osmosis. I have tried searching using various combinations, but have been unable to find any examples. Any suggestions on where I might look to find examples? Thanks

math
Hi i need help on solving this question. The population, P(t) of a city is modelled by the function P(t)=14t^2 + 650t + 32000 When will the population reach 50000? I want to know what we are looking for, and how to get to that answer. Tnx

functions
hi i was wondering what would be the domain and range restrictions that to the function f(x)=(-1/3)x^2+8, and how to find them, because i dont get it. tnx

Science
wind,waves,running water.

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