Sunday
April 20, 2014

Posts by kim


Total # Posts: 1,974

MATH FOR TEACHERS
Write 75.42 in fractional notation.

chem
For a given quantum number, n, which electrons will experience the greatest Z*, s or p??????

chemistry
what is the effect of electrons in a penetrating orbital on Z* (the effective nuclear charge) felt by electrons in a second orbital?

PHYSICS
1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2 m/s....

PHYSICS
could you expand on 3 and 4 please?

PHYSICS
1. i got 27 2. i got .46 3.still confused 4. "

PHYSICS
1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2 m/s....

physics- PLEASE HELP
2. A .12 kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 4. Lonnie pitches a baseball of mass .2 kg. The ball arrives at home plate with a speed of ...

Accounting
Calculate the future value of the following: o $5,000 compounded annually at 6% for 5 years o $5,000 compounded semiannually at 6% for 5 years o $5,000 compounded quarterly at 6% for 5 years o $5,000 compounded annually at 6% for 6 years • Answer the following: What concl...

language
the cay takes place during???

physics-HELP
Suppose that you let teh masses m1 and m2 slide (without adding the third mass). a. what is the acceleration of the mass 25g? Hint: Identify the force that produces the motion and the one that opposes and write the equation for the net force. b. what is the change of momentum ...

french
looks right to me, but i only had 3 yrs french, so im not fluent

history
What are the checks on the power of the judiciary? Are they potent and easily invoked or weak and difficult to invoke?

government
Why has the Commerce Clause (Article 1, section 8, Clause 3) been used to target agriculture, transportation, finance, labor relations and the workplace?

politic
Why do those who bear the costs (higher milk prices or taxes to support the maritime industry) not oppose these sorts of policies? Would it be rational to oppose them? Would it be rational to know about them?

English 11th grade level
Whaat was on santiago's small line in old man and the seaa?

9th grade
at 30degrees celcius, 80 grams of potassium bromide is dissolved in 100 grams of water. is this solution unsaturated, saturated, or supersaturated.

Algabra
I forgot to put this in the question i asked. Here it is again. 5/a=?/a 2power Write an equivenlant expression to this.

Algabra
How to solve this: 5/a=?/a to the second power

AP World History
In a DBQ the should the thesis statement include the group part of the essay in it?

Math - gr.11
Hi, can someone help me figure out how to do this question? A 5m stepladder propped against a classroom wall forms an angel of 30 degrees with the wall. Exactly how far is the top of the ladder from the floor? Express your answer in radical form. This chapter right now that we...

math
solve for y (x-3)(x^2+3x+9)=4y^2

math
solve for y (y^2-2y+1)-x=0

physics
a 50 kg person is standing on mercury. mercury's mass is .0553 times the earths mass and has a radius of 2439 kilometers a. what is the persons weight on saturn b. what is the persons mass on saturn how do i solve this, i dont need the answers, just an explanation

it
Explain how you would create the users for the sales organization unit and how to set up work groups in this particular situation. Keep in mind that you may have to name certain applications and allowable tasks for each individual or job role. First MI Last Logon ID Title Dept...

physics
A solid sphere of weight 36.0 N rolls up an incline at an angle of 30.0o. At the bottom of the incline the center of mass of the sphere has a translational speed of 4.90 m s-1. Isphere = 2/5mr^2. What is the kinetic energy of the sphere at the bottom of the incline? How far do...

pre cal HELP
lim (x+x^2)/3x x->0 i need to factor it first then find the limit and the answer is 1/3. I just dont know how to work it out.

Chem
1) A 15.0 g sample of nickel metal is heated to 100.0 C and dropped into 55.0 g of water, initially at 23.0 C. Calculate the final temperature of the nickel and the water, if the specific heat capacity of nickel is 0.444 j / g x C. 2) In a coffee-cup calorimeter, 1.60 g of NH4...

physics
1. A cart of weight 20 N is accelerated across a level surface at .15 m/s^2. What net force acts on the wagon? (g=9.8m/s^2) 2. An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 N. How far does the car travel before stoppin...

physics
nevermind, someone helped me earlier

physics
A block slides down a 10 angled incline at a constant speed. what is the coefficient of sliding friction between the blocks surface and the incline?

physics
thanks!

physics
A 20 kg sled rests on a horizontal surface. if it takes 75 N to start the sled in motion and 60 N to keep it moving at a constant speed, what are the coefficients of static and kinetic friction respectively? explain please

sciencce
a block slides down an angle 10 incline at a constant speed. what is the coefficient of sliding friction between the block's surface and the incline?

7th grade pre algebra
What is The Answer To This Question Below? Evaluate (m-3.2)(m+4.1)when m=-4.1

Organic Chemistry
When benzyl chloride is treated with sodium iodide in acetone, it reacts much faster than 1-chlorobutane, even though both compounds are primarily alkyl chlorides. Explain this rate difference.

Organic Chemistry
Why is benzyl chloride reactive in both tests, whereas bromobenzene is unreactive?

Organic Chemistry
I think the answer to this question might be because bromide ions are better leaving groups than chloride ions. Someone please help clarify for me! Thanks in advance.

Organic Chemistry
In the tests with sodium iodide in acetone and silver nitrate in ethanol, why should 2-bromobutane react faster than 2-chlorobutane?

algebra
Need to solve. The length of a rectangle is fixed at 30cm. What width s will make the perimeter greater than 98cm? The width must be greater than _____ cm.

algebra
need to solve this. The function H described by H(x)=2.75x+71.48 can be used to perdict the hieght, in centimeters, of a woman whose humerus is x cm long. Perdict the hieght of a woman whose humerus is 37cm long. 37cm long is ____ cm.

Statistics
An automobile in surer has found that repair claims have a mean of $1520 and a stardard deviation of $770. Suppose that the next 100 claims can be ragarded as a random sample from the long-run claims process 1. What is the mean and standrd deviation of the average x(bar) of th...

Algebra
Solve. Ten graph. 4 x > 12 -

Algebra
Graph the equation using the slope and the y-intercept y-4/3 x +4

Algebra College
Ok I will get this typed out. 1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and there are a total of ...

Algebra College
Thank you for the advice. I will do that.

Algebra College
1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 56 houses available. Use ...

math
hi i want to see if this works

math
Find all the numbers between 1 and 1000 that have 2 their only prime factor? I can't do it alone some help me!!!!!!!!!!!

Social Studies
what is meaning of motto,or short saying ,on the great seal

Language Arts
swa-swa is an example of a word from ?

math
A pasture has four straight sides. Three sides are 3/8 miles long. It took 1 3/8 miles of fencing to enclose the pasture. What is the length of the fourth side? Using a verbal model write an equation for this situation, where x is the length of the fourth side. Solve the equat...

graphs
graphs are so hard so I really need help

calculus
Expand the binomial: y = (x-3)^4

calculus
Factor the given equation: p(x) = x^3 - 25x

calculus
given the functions: f(x) = x^2 - 1, g(x) = x/x + 2 Why is x^2 - 1/x^2 + 1 the equation of (g o f)(x)?

Math(algebra)
no, I is just like I wrote it

Math(algebra)
Please help me solve this problem 2/5(2x-3)> please show me how this is done

chemistry
I have to seperate salt, sand, steel shot, copper shot, and plastic pellets(one type is heavier than water. Any help? thank you

history
what does it mean that the united states has a mixed economy

Geography
what large land feature lies between the mississippi river and the rocky mountains?

Algebra
How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If replacing the equal sign of an equation and put an inequality sign in its polace, is there ever a time when the same value will be a s...

calculus
Find f(x+ (delta)x)- f(x) --------------------- (delta)x if f(x)=8x(squared)+ 1 This is so confusing! What is all the delta x stuff?

math
a wooden pancake looking at milk wizard of gauze

math
a wooden pancake looking at milk wizard of gauze

Algebra 2
Jessica's bank contains 18 quarters & dimes, of which q are quarters. Find the total value of the coins in dollars.

algebra
Solve for x and y 40 / (x+y) = 2.70 40 / (x-y) = 4.70

science can someone please check
how does one cite this in APA form.

writing skils
frequently? /

Algebra
When equations have infinitely many solutions, How would you know this? also, when working on equations that has no solutions, How would I know this? If posible can you give me examples of each. Thank you

urbanization
where di i found this information about 2 award winners?

Financial
Suppose a Midwest Telephone and Telegraph (MTT) Company bond, maturing in 1 year, can be purchased today for $975. Assuming that the bond is held until maturity, the investor will receive $1,000 (principal) plus 6 percent interest (that is, 0.06 3 $1,000 5 $60). Determine the ...

Calculus
Please help explain the following: Estimate the solution of the equation f(x)= -1

exponets
shut up

adult education
I am having a difficult time accessing information for a paper I need to reasearch on The American Medical Website. The topic is ethical opinions on computer confidentiality. They give you a hint that the articles should start with an E, but I have searched for hours and just ...

Algebra
i need help becaus i dont know how to do it

Algebra
What is synthetic division? (rational expressions)

social studies
what is the meanining of great seal

social studies
That does fit...thank you very much....

social studies
thank you for you help.this is a crossword puzzle...9 letters..2nd letter i and 5th letter is a t....any suggestions

social studies
What is a group of people that has reactionary views called??

com140
what type of unwanted reaction you might encounter form business committee

accounting
can u help with accounts

algebra 2
how to find accerlation

math
Write the ratio in simplest form. The ratio of 75 seconds to 3 minutes.

Math
a simple process for finding rates and unite price solutions.

Algerbra II
Classify the system , and determine the number of solutions. The system is consistent and dependent and has infinitely many solutions. The system is inconsistent and independent and has no solutions. The system is inconsistent and dependent and has no solutions. The system is...

algebra 2
Classify the system , and determine the number of solutions. This system is inconsistent. It has infinitely many solutions. This system is consistent. It has infinitely many solutions. This system is inconsistent. It has no solutions. This system is consistent. It has one sol...

Law and Ethics
How did you find this information? I am taking the same class and have looked for hours without finding anything of value.

english
i need help so i may locate nouns in sentences. please help me.

english
what the noun in the sentence an extreme climate may affect your communication effectiveness.

english
what is the noun in the sentence poor gramer may result in miscommunication.

Psychology
Sternbergs Love Theory ... I know the 8 different types but I need the characteristics of them and I cannot find them anywhere.

Algebra
(11xy)¯^5/^7= 1/(11xy)¯^5/^7 Is this answer correct. Can someone tell me if I did this expression right. The instructions are to rewrite the following expression with positive exponenets.

Algebra
REWRITE THE FOLLOWING EXPRESSION WITH POSITIVE EXPONENETS.(11xy)¯^5/^7= 1/(11xy)¯^5/^7 .is this answer correct. cAN SOMEONE HELP ME WITH THIS EQUATION ,I AM TRYING TO LEARN.

math
i need help on finding the missing finger

math
When managing a business, it is important to take inventory of where your money is spent. You have a monthly budget of $5,000. Refer to the table below and answer the questions that follow. Round your answers to the nearest tenth of a percent. Category Cost Percentage Labor $1...

algebra
Hermes can travel 2 mi up Mt Olympus at a rate that is 18 mi/hr slower than he rides Pegasus down the same distance. The entire trip takes 14 min. How fast can he go up? How fast can he ride down?

algebra
Jackie can shell a quart of pecans twice as fast as John. Together they can shell a quart of pecans in 20 min. How long would it take John to shell a quart of pecans by himself?

AE
Go to the state you live in and then .gov back slash mde. Check this site out it may help you.

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