Thursday
July 24, 2014

Posts by mark


Total # Posts: 1,257

geography
what is exsolation?

Physics
A pond is 12 metres across. The crests of two successive waves are 60.0 cm apart and they each move across the pond in 15 seconds. a)What is the velocity of the waves? b)What is the frequency of the waves? c)What is the period of the waves?

Math
The sides of the triangle at right are formed by the graphs of 3x+ 2y = 1, y = x − 2, and −4x+ 9y = 22. Is the triangle isosceles? How do you know?

Math
75/15 = 5. So each baseball weighs 5 ounces. 15/5 = 3. Three baseballs weigh 15 ounces.

Math
Josh borrows some money on which he makes monthly payments of $125.43 for 3 years. If the interest rate is 5.4%/a compounded monthly, what will be the total amount of all of the payments at the end of the 3 years?

Math
Maria bought 5 cans of tennis balls. Each can contained 3 tennis balls. How many tennis balls did Maria buy altogether?

Algebra
There are 4 children and 17 adults.

Math
Explain It Why is 10-0=10, but 0/10=0? Explain

chem
The ΔHvap of a certain compound is 34.68 kJ·mol–1 and its ΔSvap is 93.60 J·mol–1·K–1. What it the boiling point of this compound?

math
taylor was having a party.she invited 20 friends to her party, if each person shook hands with every other person .how many handshakes would there be? please explain,thanks

chemistry
OK thanks.... In the question, and in the example in the textbook there was no example of using an ICE table. Tables make assigning values so much easier

chemistry
Sorry I should have left that out, it's just the formula HCOOH(aq) <-----> H^+ (aq)+ HCOO^-(aq)

chemistry
HCOOH(aq) <-----> H^+ (aq)+ HCOO^-(aq) The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3

science
Oh yeah! Those values apply to this equation: HCOOH(aq) <-----> H^+ (aq)+ HCOO^-(aq)

science
The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3. (Show all of your working and give your a...

Math grade 8 (algebra)
The perimeter of the square is 2cm longer than the perimeter of the triangle.Write an equation for the perimeter of the square and then determine the length of each side of the square. Thank you in advance.

Math
Red beads = 16 Yellow beads = 16-8 = 8 Green beads = 16 +7 = 23 16 red, 8 yellow, 23 green is 16+8+23 = 47 total beads

English
choosing a conjunction and the relationship it expresses: ------you buy a rare manuscript, make certain of its authenticity. I used "Before" but it would be "time" or Should I use "If" and it would be "condition" This is so confusing!!!

Chemistry
I'm asked to tell which of the following peptide segments is most likely to be part of a stable Alpha Helix at physiological pH? Only 1 can be chosen 1. gly-gly-gly-ala-gly 2. gly-arg-lys-his-gly 3. pro-leu-thr-pro-trp 4. lys-lys-ala-arg-ser 5. glu-leu-ala-lys-phe 6. glu-g...

Chemistry
You have 475 mL of an 0.47 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.00?

finance
1. The U.S. financial system is composed of: (1) policy makers, (2) a monetary system, (3) financial institutions, and (4) financial markets. Indicate which of these components is associated with each of the following roles: a. accumulate and lend/invest savi...

finance
ATM Banc has the following liabilities and equity categories: Deposits $9 million, Other liabilities $4 million, Owners’ capital $2 million. . a. What would be the bank’s total liabilities and capital if owners’ capital were half the size of other liabilities? b...

arithmetic
change 12/23 into a decimal to the nearest hundreth's

statistics
did you get an answer?

statistics
these numbers are wrong. did you change the numbers??? where are you getting this data???

statistics
these numbers are wrong. did you change the numbers??? where are you getting this data???

math
which digits are in the ones place of a number multiplied by 5? a.0 or 1 b.0 or 5 c.2 or 4 d.2 or 5 Is it b????

math
which digits are in the ones place of a number multiplied by 5? a.0 or 1 b.0 or 5 c.2 or 4 d.2 or 5 Is it b????

help please
was this correct??

help please
many children have more than one figure towards whom they direct attachment behavior. These figures are not treated alike but there is a strong bias for a child to direct attachment behavior mainly towards one particular person. Bowlby used the term "monotropy" to de...

help please
what does reseach show about the child;s relationship with the primary parental figure when the child has additional attachments to other people?

English-Native speakers
Thank you ;)

English-Native speakers
Can someone please make this sentence more "English"? THE ROLE OF ILLUSTRATIONS IN CHILDREN'S BOOKS WRITTEN BY GERMAN WRITERS AND RELEASED AFTER 1950. This is supposed to be the title

Ms. Sue (History)
Thanks

Ms. Sue (History)
The Europeans raised their own tariff which caused a trade protection war. The American merchants had enormous surpluses and no market to sell their goods. This would cause a fall in prices and industrial instability. Am I on the right track?

History
Why was the Fordney-McCumber Tariff of 1922 a BAD thing for the U.S. Economy? There seems to so many and I would like to know the most important ones.

math
draw the shape of an ice-cream cone wrapper when it is slit from the edge to the center point and flattened out

Math
Find the positive number such that 1/2 of the number multiplied by 1/3 of the number, multiplied by 1/6 of the number is equal to the number itself.

English
I need to correct the verb in this sentence. If we would have had the engine tuned, I'm sure we would not be stranded on the highway now. Is this correct? If we had had the engine tuned, I'm sure we would not be stranded on the highway now.

Algebra
Can you explain how you got those answers, Raj? Thank You!

Algebra
-Alfonso can write 100 practice problems for the math team in 20 hours, Beauregard can write the same number of problems in 30 hours, and Clyde can write the number of problems in 40 hours. Working together, at what time will the three of them finish writing 100 practice prob...

Chemistry
7.40 g of liquid methanol, CH3OH, are placed in an empty 20.0 L container at 45.0°C. What will be the pressure in the container when equilibrium is established? Assume the temperature remains constant and the volume of any liquid is negligible. The vapor pressure of methan...

math
how many gallons would a hole 100ft deep by 6ft wide hold

English
Thank you very much, Ms. Sue

English
"Understanding the cause for Bartleby's reason to be an introvert and to offer polite refusals when asked to do something would suggest he deserves either sympathy or disdain." I need to reword the whole thesis using different words but meaning the same thing. I ...

English
"Understanding the cause for Bartleby's reason to be an introvert and to offer polite refusals when asked to do something would suggest he deserves either sympathy or disdain." Thank You Ms. Sue, That was my thesis for a paper and I need to reword it, could you p...

English
Could you help me rephrase this sentence? "Understanding the cause for Bartleby's reason to be non-social introvert and to offer polite refusals when asked to do something would suggest whether he deserves sympathy or disdain."

English
Could you help me rephrase this sentence? "Understanding the cause for Bartleby's reason to be non-social introvert and to offer polite refusals when asked to do something would suggest whether he deserves sympathy or disdain."

history
Do you think that the Korean War was merely a civil war in which the United States supported one side, or should it be considered an international war in which the United States used the United Nations to further its anticommunist policies?

English-Native speakers
I can't use that. It is paraphrasing :/ I'll leave it that way "than if they were conducted today"

English-Native speakers
Need help with one sentence structure. I don't know if I am going to be able to explain it good. It goes like this "the measures will have to be much more drastic than if they were conducted today" I need help with this part "than if they were conducted toda...

Physics
A cubical object of sides 5 cm is immersed completely in water. What is the force of buoyancy on the object? (Assume g = 10 m/s2)

science grade 8
Please, help. I need to create a comic that illustrates and explains what life would be like without 2 organ systems: muscular and digestive. I have an idea for digestive (you can live without gallbladder). I need to explain what is happening inside and outside the body, and w...

Physics
An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?

Physics
An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?

math
A mother wnats to invest $6,000 for her son's future education. She invests a portion of the money in a bank certificate of deposit which earns 4% and the remaainder is a savings bond that earns 7%. If the total interest earned after one year is $360.00, how much money was...

English
Hello! Any interesting ideas on how to present new vocabulary? The topic is smoking. Some of the words are:addicted,to promise,to give up and so on. There are 10 unknown words. What to do? :/ There are 22 students (17 years old) and they are learning English for only 3 years

Physics
A circular disk of radius 30 cm is rotating with an angular velocity of 2 radians / s. What is the tangential velocity of a point on the rim of the disk? What is its centripetal acceleration?

Physics
A 980 kg car traveling at 20 m/s rounds a curve of radius 40 m. What is the friction force that must act on the car to keep it in its circular path?

English
Hello! How to present smoking as a topic to students? There are 22 students (17 year olds) and they are learning English for 3 years.So any kind of discussion has to be excluded. I would really like to come up with something interesting! At the end of the lesson I am going to ...

Physics
A 3 kg ball is traveling in a circle of radius 2 meters with a tangential velocity of 2 meters/second. Find the centripetal acceleration of the ball and the centripetal force acting on it.

math problem
--There is a layer of ice four inches thick covering a small pond when the weather arrives and it begins to smelt. It smelts 1/16 inch the first day, 1/8 inch the second day. 1/4 inch the third day, and keeps doubling the amount melted each succeeding day. all the ice will be ...

Physics
A 500 kg cannon rests on wheels that are free to roll. The cannon fires a 2 kg cannon ball horizontally with an average force of 400 N. What is the acceleration of the cannon ball? What is the recoil acceleration of the cannon

Geometry
BC has endpoints B(5,9) and C(-4,-3). Find the coordinates of the midpoint of BC.

Psychology
Why did early Psychologists NOT focus on "the mind" it was too complex it was genetically determined it was largely unconscious it was unobservable it was environmentally determined

Psychology
In order to treat a specific phobia, this therapy would be best Antidepressant drugs Systematic desensitization Implosion therapy Psychoanalysis Aversion therapy

English
We express our love for each other by exchanging gifts. (for each other) Is that a prepositional phrase? What is (by exchanging gifts)

Math
Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 5 times. Is that correct?

Math
Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 5 times. Is that correct?

Math
Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 9 times. Is that correct?

math
Malia runs twice as fast as Eileen. If Malia and Eileen start from the same point and run around a circular track in opposite directions, how many times will they pass each other if they stop when Malia completes her sixth lap? I figured 9 times. Is that correct?

Math
Need Help!! Find the measure of the small angle between the hands of a clock at 8:16 a.m. I keep getting different answers

math
reduce 16/180 to lowest terms

maths
find volume and curved surface area of a cone of radius 6.00cm and perpendicular height 8.00cm

chemistry
the level of water in a graduated cylinder is 52.7 ml. After a solid object weighing 100 g is added, the level is 87.4 ml. What is the density of this object?

Econ
I have spent a few hours on this question. Can anyone help? The demand for Healthy Wheat Cookies is downward sloping, while the supply is upward sloping. Healthy Wheat Cookies are a normal good produced mainly from wheat and sugar. The government recently put a price floor on ...

English
Seals balance balls on their noses on command. Is command the object of the prep. on

Physics
A freight train has a mass of 1.5*10^7 kg. If the locomotive can exert constant pull of 4.5 *10^5N, how long does it take to increase the speed of the train from res to 80.0km/hr? a)467s b) 444s c)527s d) 425s e) 496s

Physics
A typical laboratory centrifuge rotates at 4100 rpm. Test tubes have to be placed into a centrifuge very carefully because of the very large accelerations. (a) What is the acceleration at the end of a test tube that is 11 cm from the axis of rotation? dropped from a height of ...

Chemistry
When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds?

English
There is a control on the television set for making the picture a little less brighter. Is the sentence correct or is it a little less bright

English
We found it hard to understand why Randy had spoken as rude as he did in response to a simple question. is rude correct or is it rudely and why

Eglish
Thanks Ms. Sue

English
Why is she walking so slow toward the house? Is that correct or should it be (so slowly} They both sound correct

English
Dividing the pie into, Felicia took the least and gave me the larger portion. Is least correct or should it be lesser? It doesn"t sound right with lesser.

Math
Two sides of a triangle measure 14 and 10. If A is the set of possible lengths for the third side, how many elements of A are integers? Is the correct answer 19 elements of A are integers?

Math
Two sides of a triangle measure 14 and 10. If A is the set of possible lengths for the third side, how many elements of A are integers? Is the correct answer 19 elements of A are integers?

chemistry
how much E is used to heat 500g of iron from 22c to 55c? Cfe=0.451 Jg-1C-1.

Physics
v^2=2W/(m1+m2)

Math
3. $34,600

English
Thank You, Ms. Sue I understand it better now

English
Limburg cheese smells very (bad, badly). Is the correct answer bad because it modifies cheese? "The leading lady in the play," she said, "is feelin (sick, sickly)." Is the correct anwer sickly because it modifies is feeling?

English
"She is resting ( comfortable, comfortably) backstage." Is the correct answer comfortably even if it follows the linking verb is

French
Thank you SraJMcGin. Your explanations are very helpful.

French
Are my answers correct? 1 Elle voit le film au cinéma. Elle _____ voit. le-my choice lui pour me 2 Nous parlons souvent à nos professeurs. Nous _____ parlons souvent. les leur-my choice y en 3 Elle va en Chine. Elle ____ va pour étudier la culture. lui y-m...

physics
Let the radius of the circular segment be 92 m, the mass of the car 2393 kg, and the coefficient of the static friction between the road and the tire 0.9. Find the magnitude of the normal force N which the road exerts on the car at the opti- mal speed (the speed at which the f...

Math
Factor. y ^3 + 729

Math HELPPPP
(a) Which of the following are examples of the expression "difference of two cubes"? (Select all that apply.) (y2 - 9)3 3 - 4y 64 - y3 (y - 1)3 y3 - 27 27 - 3y y3 (b) Which of the following are examples of the expression "cube of a difference"? (Select all ...

Math
Before a football game, a coin toss is used to determine which team will kick off. The height h (in feet) of a coin above the ground t seconds after being flipped up into the air is given by the following equation. h = -16t2 + 34t + 15. How long does a team captain have to cal...

Math
At the peak of a roller coaster ride, a rider's sunglasses fly off his head. The height h (in feet) of the glasses, t seconds after he loses them, is given by h = -16t2 + 16t + 1152. After how many seconds will the glasses hit the ground?

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